GE Entelli-Switch 250 User's Manual
Contents
1. symbols Each or symbol represents 10 electrical degrees out of phase A maximum of 18 symbols 180 electrical degrees can be monitored The number of or symbols decrease as the two sources approach synchronism and increase as the two sources drift out of synchronism If S1 and S2 Frequencies are identical the display will show a series of alternating symbols which also indicate the approximate out of phase degrees In the event that the Sources do not come within 7 electrical degrees of each other within 60 seconds the unit will display the message SYNCH CHECKING and will allow the user to BYPASS If the BYPASS button is pressed the unit will display the message WARNING MAY CAUSE DAMAGE TO THE LOAD Pressing XFR will actually bypass the R50 Since R50 is a passive device the length of time it takes to reach Synchronism is de pendent on the frequency difference between the two Sources Source 1 is usually a Utility and the frequency is not within the control of the consumer Source 2 needs to be adjusted to create an adequate difference in order for the transfer to happen a timely fashion Note For optimum performance Source 2 Generator should be adjusted a Maximum of 2 Hertz above or below the Utility frequency minimum of 0 1 Hertz 58 to 59 9 or 60 1 to 62 Hertz Adjustment of Generator to 60Hertz could cause lengthy transfer delay R50 Feature can be turned ON or OFF via2. If the CDT Exerciser is Factory configured for a Load Exerciser the Controller will immediately start a load exercise The controller will start the generator transfer the load to Source 2 and remain in Source 2 for the duration set for EXER S2 RUN TIME in the SET menu The controller will retransfer the load back to Source 1 after the S1 stable timer has timed out and run the generator unloaded for the duration of the S2 stop delay timer Engine Cool Down Timer If the CDT Exerciser is Factory configured for a No Load Exerciser the Controller will immediately start a No load exercise The controller will start the generator and run it unloaded for the duration of the S2 stop delay timer Engine Cool Down Timer Exercise will be repeated at the same time as initiated on every 1 7 14 or 28 days according to the selection made in the Configure CFG menu How to Bypass Cancel an exercise during an exercise cycle 1 Press BPASS 2 Allow the controller to complete the Engine cool down cycle If the CDT Exerciser is Factory configured for a No Load Exerciser Or allow the controller to complete retransfer to Source 1 If the CDT Exerciser is Factory configured for a Load Exerciser How to Bypass the next exercise event and Keep the rest of scheduled events unchanged 1 Press Test 2 Press MORE 3 Press BYPASS EXER To re institute the next exercise event back press CANCL BPASS How to initiate a new exercise start time 1 P
3. The S1 OK screen will show time hours and minutes on the second line if the system clock has been set Date on third line Setting the System Clock Start from S1 OK screen 1 Remove battery protective white plastic strip near P relay 2 Press MORE then press SET 3 Press MORE and scroll to SET SYSTEM CLOCK using the MORE key 4 Press SEL 5 ENTER ACCESS CODE located on the white label on the back of the controller 6 Press SEL 7 Use the up and down keys to change the hour value 8 Press SAVE this will enter this value and move cursor to minutes 9 Use the up and down keys to change the minutes 10 Press SAVE this will enter this value and move cursor to month 11 Use the up and down key up to change the month 12 Press SAVE This will enter this value and complete the clock setting 13 Use the up and down keys to change the date 14 Press SAVE this will enter this value and move cursor to year 15 Use the up and down keys to change year 16 Press SAVE this will enter this value and compete the clock setting 17 To edit settings press SEL and repeat steps 6 16 18 If the setting is satisfactory press MORE unit then returns to the SET menu then press BACK then ESC Replacement battery part K 4100 Battery will last 5 years and provides power to retain clock function only Controller functions without battery VI Voltage Imbalance Three Phase For a three phase source this feature mon
4. I GE Zenith Controls 17 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Entelli Switch 250 User Setup CFG Menu TIMER EXERCISER CDT 1 7 14 28 Day pg 11 amp 15 CLOCK EXERCISER LOAD OR NO LOAD CDP 1 7 14 28 365 Day pg 11 amp 16 TEST KEY 6 Maintained Momentary pg 11 TRANSFER COMMIT S13 ON OFF pg 13 AUTO MANUAL S5 or S12 ON OFF pg 13 IN PHASE MONITOR R50 ON OFF pg 13 S1 OVER VOLTAGE R1 1 or R1 3 ON OFF pg 12 S1 UNDER FREQUENCY ON OFF pg 9 S2 OVER VOLTAGE ON OFF pg 9 S2 OVER FREQUENCY ON OFF pg 9 PHASE IMBALANCE VI ON OFF pg 14 PHASE ROTATION MATCH R16 ON OFF pg 12 LOAD DISCONNECT TD UMD pg 13 TRANSFER ALARM CTAP ON OFF pg 11 NETWORK ZNET ON OFF pg 14 CONFIG USER SETUP MORE BACK 1 VAB ___ 2 VAB ___ VBC ___ VBC ___ VCA ___ VCA ___ MORE CFG SET ESC S1 OK 01 50 FRI 31 MAY 2003 MORE TEST Optional Accessories Turn options ON or OFF via keypad through the CFG menu Enter six digit access code The factory assigned six digit access code is located on the back of the controller Network Communications Option 11 12 13 R1 Output 5 6 7 R1 Output 14 15 16 R2 Output 8 9 10 R2 Output Contact Rating 10A 277VAC or 30VDC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
5. line terminals 9 Verify that the phase rotation of Source 1 is the same as the phase rotation of Source 2 10 Shut down the generator s engine 11 Place the starting control in the Automatic position 12 Complete the visual inspection of the transfer switch 13 Close the enclosure 14 Lock the enclosure CAUTIONS Certain accessories per specific schematics can inhibit automatic transfer Engine Gen Set could start when engine control wires are attached Figure 3 g SERIAL NUMBER RATING VOLTS AMPS SYSTEM VOLTS MODEL NUMBER HZ PHASE GE Zenith Controls 4 5 6 1 2 3 P Relay Engine Start Contact rating is 10 Ampere at 120VAC or 28VDC Gold plated E Figure 1 Figure 2 Typical Entelli Switch 250 I GE Zenith Controls 5 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Installation cont d NOTE When the voltage and frequency reach preset values the Source 2 Available LED will illuminate 7 Verify the phase to phase voltages at Source 2 line terminals 8 Verify that the phase rotation of Source 2 is the same as the phase rotation of Source 1 9 Shut down the generator s engine Place in Automatic Mode NOTE Source 2 Available LED will turn off NOTE The engine generator will continue to run for the duration of Source 2 Stop Delay Timer 10 Place the disconnect switch to ENABLE 11 Complete the visual ins
6. 100 in 1 increments see page 18 Once satisfied the T timer will begin timing to transfer to Source 1 Under Frequency Fail Factory Default 90 This adjustment determines the low frequency threshold Adjust via the SET menu Range is 88 to 98 in 1 increments see page 18 Fail must be a minimum of 2 below Restore setting Once satisfied the T timer will begin timing to transfer to Source 1 Over Frequency Restore Factory Default 102 This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re transfer to Source 1 Adjust via the SET menu Range is 102 to 104 in 1 increments see page 18 Restore must be a minimum of 1 below Fail setting Over Frequency Fail Factory Default 105 This adjustment determines the maximum acceptable Over Frequency Adjust via the SET menu Range is 103 to 105 in 1 increments see page 18 Once exceeded the P timer begins timing to signal the generator to start Source 2 Under Voltage Restore Factory Default 90 This adjustment determines the minimum acceptable voltage required to transfer to Source 2 Adjust via the SET menu Range is 85 to 100 in 1 increments see page 18 Once satisfied the W timer will begin timing to transfer to Source 2 Under Voltage Fail Factory Default 80 This adjustment determines the low voltage threshold Adjust via the SET menu Range is 75 to 98 in
7. CFG Menu see page 17 Factory Default if OFF S5P Auto Semi Manual selector In Auto position retransfer to Source 1 is automatic after the T timer has timed out The T time delay is bypassed if Source 2 fails In Manual retransfer to Source 1 is upon depression of BYPASS DELAY button YEN or if Source 2 fails S12P Auto Manual Selector In Auto position the Automatic Transfer Switch functions automatically as specified with the Switch drawings In Manual the Automatic Transfer Switch will transfer to either direction upon depression of Source 1 or Source 2 transfer buttons Should Source 1 fail the Generator Source 2 will automatically start Once transferred in Manual the Switch maintains position selected even if selected power fails S13P Transfer Commit Configured via CFG menu see page 17 When this Feature is set to OFF The transfer Switch is not committed to transfer unless the outage duration is longer than the timers that precede the transfer to Source 2 position This assumes that the outage will be an isolated event When this Feature is set to ON The transfer Switch is committed to transfer to Source 2 position once the W timer has begun timing even if Source 1 power returns before the transfer to Source 2 This is to ensure that the transfer takes place because one outage may be followed by another S14 Test Auto Source 1 Selector Door mount SW1 Auto Off Start Engine control selector Door mou
8. Source 2 Start Timer Engine Start Timer P cycle A manual CANCEL button is provided to cancel the test if desired Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore Values the time delay to Source 2 Timer W begins its timing cycle to ensure voltage and frequency stabilization before transfer A manual pushbutton BYPASS is provided to bypass the W time delay if desired After the W time delay the CCE relay energizes the CE solenoid to close the transfer switch in to Source 2 The SE limit switch activates to de energize the CCE relay Restoration of Source 1 Power Deactivating the test switch initiates re transfer to Source 1 sequence The delay to Source 1 Timer T begins its timing cycle to ensure voltage and frequency stabilization before retransfer A manual pushbutton BYPASS is provided to bypass the T time delay if desired After the T time delay the CCN relay energizes the CN solenoid to retransfer the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the S2 Stop Delay Timer Delay to Engine Stop U begins its cycle to allow Source 2 Engine Figure 11 S Y S T E M T E S T FA S T X F R N O M O R E T E S T L O A D X F R to run unloaded A manual pushbutton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the co
9. cycles A total of 7 independent No Load exercise periods up to 10 hours each can be programmed for each of the daily weekly 14 day and 28 day exercisers A total of 12 independent No Load exercise periods up to 10 hours can be programmed for the 365 day Exerciser How to Configure CFG the Exerciser 1 Beginning from the S1 OK screen press MORE then CFG 2 Press MORE to scroll to CONFIG CLOCK EXERCISER screen 3 The third line of the CONFG CLOCK EXERCISER will show either DAILY WEEKLY 14 DAY 28 DAY 365 DAY or OFF 4 If the third line of the CONFG CLOCK EXERCISER shows DAILY WEEKLY 14 DAY 28 DAY or 365 DAY as desired press MORE repeatedly to BACK Press ESC then proceed to the SET menu to set the EXERCISER 5 If the third line of the CONFG CLOCK EXERCISER shows OFF continue 6 Press SEL 7 Enter ACCESS code located on white label on the back of the controller 8 Press UP or DOWN to select DAILY WEEKLY 14 DAY 28 DAY or 365 DAY as desired 9 Press SAVE 10 Press MORE repeatedly to BACK then ESC to S1 OK screen How to set SET the DAILY Exerciser 1 Beginning from the S1 OK screen press MORE then SET 2 Press MORE repeatedly until SET EXERCISER screen 3 Press SEL 4 Enter ACCESS code located on white label on the back of the controller 5 Press SEL 6 Cursor is indicated as a line under character to be changed Change values with up and down keys Press SAVE after each entry to save
10. maintains the exerceser memory only and does not otherwise affect the operation Testing A manual operator handle is provided with the transfer switch for maintenance purposes only Manual operation of the switch must be checked before it is operated electrically Both power sources must be disconnected before manual operation of the switch Insert the handle and operate the transfer switch between the Source 1 and Source 2 positions The transfer switch should operate smoothly without binding Return the switch to Source 1 position remove the handle and return it to the holder provided After completing the inspection cleaning and servicing of the transfer switch reinstall the switch cover and close and lock the cabinet door Reclose the circuit breakers feeding the utility and generator sources to the switch Initiate the electrical transfer test by activating the TS test switch P timer will time out and the micro controller will send an engine start signal When the W time has elapsed the switch will complete its transfer by closing into Source 2 Deactivating the test switch will start retransfer to Source 1 The switch will complete its retransfer to Source 1 after the time delay of the T timer The U engine overrun timer allows the engine generator to run unloaded for a preset cool down period NOTE A periodic test of the transfer switch under load conditions is recommended to insure proper operation See National
11. menu see page 18 E Engine Start Contact EL P Event Log Sequentially Numbered Log of 16 events that track date time reason and action taken System Data Total Life Transfers N2P Days Powered Up Total Transfers to S2 Total S1 Failures Time S1 available in Hrs Time S2 available in Hrs N1P F Fan contact operates when generator is running HT Heater and Thermostat K Frequency Meter Door mount K P Frequency Indication for S1 and S2 L LNP Center off position LCD Indicator Indicating LED lights L1 Indicates Switch in Source 2 position L2 Indicates Switch in Source 1 position L3 Indicates Source 1 available L4 Indicates Source 2 available I 12 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 M1 Single Phase Amp Meter M2 Three Phase Amp Meter M80 3000 Digital Power Monitor M82 5200 Digital Power Meter M83A EPM 5300 Digital Power Meter with Modbus Port M83B EPM 5350 Digital Power Meter with Ethernet Port M84 7430 Digital Power Meter Wye or Delta M85A EPM 9450 Digital Power Meter Ethernet M85B EPM 9450 Digital Power Meter with Internal 56K Mod M86A EPM 9650 Digital Power Meter Wye or Delta RS232 or RS485 M86B EPM 9650 Digital Power Meter Wye or Delta RS232 or RS485 N1 Running Time Meter Door mount N2 Operation Counter Door Mount P1 Time Delay Source 2 Start Adjustable 0 10 seconds Standard setting is 3 seconds Adjust via SET menu see page 18 P2 Time De
12. the same source as the bypass switch Reinstall the manual handle in its holder and the service access cover on the left side of the transfer switch 11 Re connect the transfer switch to AUTO b Auto Location Removal of the closed transition transfer switch if Source 1 and Source 2 contacts remain open 1 Close the bypass switch into the available source 2 Turn the DS to INHIBIT Remove the transfer switch service access cover Close the transfer switch into the same source as the bypass switch Incorrect sequencing is prevented by the interlocks while the transfer switch is in AUTO only 3 Remove the transfer switch from the bypass isolation transfer switch to inspect and repair c Test Location Removal of the closed transition transfer switch if both Source 1 and Source 2 contacts remain open 1 Close the bypass switch contacts BN as indicated on the bypass instruction label on the cabinet door 2 Disconnect all power sources from bypass isolation closed transition transfer switch 3 Open bottom cabinet door Turn the Disconnect Switch DS to the INHIBIT position 4 Remove the service access cover on the left side of the transfer switch 5 The manual operator and the manual handle will not be exposed Insert the handle into the Source 1 side and close the Source 1 contacts 6 Close the bottom cabinet door 7 Energize Source 1 power 8 Remove the automatic transfer switch from the bypass isolation transf
13. value and to move to the next value to be changed 7 Press BACK when complete 8 Press MORE repeatedly until SET USER SETUP Press BACK then ESC to the S1 OK screen How to Bypass Cancel an exercise during an exercise cycle 1 Press BPASS 2 Allow the controller to complete the Engine cool down cycle If the CD Exerciser is configured or Set for a No Load Exercise Or allow the controller to complete retransfer to Source 1 If the CD Exerciser is configured for a Load Exerciser How to Bypass the next exercise event and Keep the rest of scheduled events unchanged 1 Press TEST 2 Press MORE 3 Press BYPASS EXER To re institute the next exercise event back press CANCL BPASS How to check the next exercise event 1 From S1 OK screen press MORE three times 2 The unit will display the PLANT EXERCISER NEXT event in DAYS HOURS and MINUTES 3 Press ESC to S1 OK Screen Notes In the S1 OK screen an E appears in the upper right hand corner of LCD screen when exercise is impending For Load Exerciser actual exercise period ATS in S2 position CDT Exerciser timing period T S1 Stable Timer timing period A value greater than zero must be entered in the Exerciser duration field to be accepted as a valid exercise period The Exercise cycle will be repeated on a regular basis as programmed and initiated in the SET menu depending on what Exerciser was configured selected in the CFG menu Figure 9
14. 1 increments see page 18 Fail must be a minimum of 2 below Restore setting Once voltage falls below threshold T timer will be bypassed to expedite the transfer to Source 1 Over Voltage Fail Factory Default 110 This adjustment determines the maximum acceptable Over Voltage Adjust via the SET menu Range is 105 to 110 in 1 increments see page 18 Once exceed ed the T timer will be bypassed to expedite the transfer to Source 1 Over Voltage Restore Factory Default 105 This adjustment determines the minimum acceptable Over Voltage threshold at which the transfer switch is allowed to transfer to Source 2 Adjust via the SET menu Range is 103 to 105 in 1 increments see page 18 Restore must be a minimum of 2 below Fail setting Under Frequency Restore Factory Default 95 This adjustment determines the minimum acceptable frequency required to transfer to Source 2 Adjust via the SET menu Range is 90 to 100 in 1 increments see page 18 Once satisfied the W timer will begin timing to transfer to Source 2 Under Frequency Fail Factory Default 90 This adjustment determines the low frequency threshold Adjust via the SET menu Range is 88 to 98 in 1 increments see page 18 Fail must be a minimum of 2 below Restore setting Once satisfied the W timer will begin timing to transfer to Source 2 Over Frequency Fail Factory Default 105 This adjustment determines the ma
15. 1 position The time delay to Source 2 timer DW begins its timing cycle After the DW time delay the CCE relay energizes The switch then completes transfer to Source 2 by energizing the CE solenoid The SE limit switch activates to de energize the CCE relay Restoration of Source 1 Power When Source 1 power reach the preset Restore values the controller initiates re transfer to Source 1 sequence The delay to open Source 2 Timer T begins its timing cycle to ensure voltage and frequency stabi lization before retransfer A manual pushbutton BYPASS is provided to bypass the T time delay if desired After the T time delay the CCEO relay energizes the CEO solenoid to open the switch out of Source 2 position The time delay to Source 1 timer DT begins its timing cycle After the DT time delay the CCN relay ener gizes the CN solenoid to complete re transfer of the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the S2 Stop Delay Timer Delay to Engine Stop U begins its cycle to allow Source 2 Engine to run unloaded A manual pushbut ton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the controller sends an Engine stop signal Timer Designations as they appear in the SET menu ATS Type P W DW T DT U Standard Time Delay Time Delay Time Delay S2 Stop Transition S2 Start S2 Stable S1 Stable De
16. 1 timer W begins its timing cycle After the W time delay the ATS closes into Source 2 only after the controller ensures the prop er phase relationship between the two Sources After the ATS closes into Source 2 the SE limit switch becomes activated to de energize the CCE relay and energize the CCNO relay which opens the ATS out of Source 1 The SNO limit switch activates to de energize the CCNO relay The ATS has now closed into Source 2 position without interrupting the load Re Transfer with Closed Transition Deactivating the Test Switch initiates the re transfer When Source 1 voltage and frequency reach the preset Restore values the time delay to open Source 2 timer T begins its timing cycle After the T time delay the ATS closes into Source 1 only after the controller ensures the proper phase relationship between the two Sources After the ATS closes into Source1 the SN limit switch becomes activated to de energize the CCN relay and energize the CCEO relay which opens the ATS out of Source 2 The SEO limit switch activates to de ener gize the CCEO relay The ATS has now closed back into Source 1 position without interrupting the load The ATS defaults to an open transition transfer when Source 1 fails Closed transition transfer is not possible with only one source available If the optional Transition Mode Selector TMS is available one can select an Open Transition Transfer or a Closed Transition Transfer when both So
17. 400 Amp I GE Zenith Controls 11 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Accessory Definitions 6P Test Switch Momentary 6A Test Switch Maintained Auto Momentary Test 6AP Test Switch Maintained Momentary utilizing keypad 6B Test Switch Maintained Auto Momentary Test Key Operated 6C Test Switch Maintained Auto Maintained Test Key Operated A1 Auxiliary Contact operates on Source 1 line failure A1E Auxiliary Contact operates on Source 2 line failure A3 Auxiliary Contact Closed in emergency Source 2 Additional Available 10 max and need to be specified A4 Auxiliary Contact Closed in normal Source 1 Additional Available 10 max and need to be specified A62 Sequential Universal Motor Load Disconnect Circuit Normally closed auxiliary contacts for motor loads Open 0 60 seconds prior to transfer after transfer or both in either direction then re close in timed sequence after transfer AB3 Auxiliary Contact Closed in bypass emergency Source 2 S P D T Standard up to 400 Amp Additional Available 10 max and need to be specified AB4 Auxiliary Contact Closed in bypass normal Source 1 S P D T Standard up to 400 Amp Additional Available 10 max and need to be specified B9 Battery charger connections Calibrate While monitoring the actual Phase to Phase voltage lev els and Frequency with a calibrated test equipment the Phase to Phase voltage sensing and Fre
18. 6 K 3224 57P 1016 208 220V K 3217 K 3225 57P 1017 230 240V K 3218 K 3226 57P 1018 277V K 3219 K 3227 57P 1019 380 400V K 3220 K 3228 57P 1020 416 440V K 3221 K 3229 57P 1021 460 480V K 3222 K 3230 57P 1022 575 600V K 3223 K 3231 Relay Transformer R T Box 40 225 Amp Molded Power Section Transformer Usage see Figure 12 Item Part No Description Qty 1 See Chart Transformer 1 VA 2 2 See Chart Transformer 25 VA 2 3 K 1274 Relay Flange Mounted 2 Bill of Material R T Box Primary 1 VA 25 VA Assembly Voltage XFMR XFMR Part No at 50 60 Hz Part No Part No 50P 1026 120V K 3216 K 3224 50P 1027 208 220V K 3217 K 3225 50P 1028 230 240V K 3218 K 3226 50P 1029 277V K 3219 K 3227 50P 1030 380 400V K 3220 K 3228 50P 1031 416 440V K 3221 K 3229 50P 1032 460 480V K 3222 K 3230 50P 1033 575 600V K 3223 K 3231 40 3000 Amp All Other Standard Types Transformer Usage see Figure 13 Item Part No Description Qty 1 See Chart Transformer 25 VA 2 2 See Chart Transformer 1 VA 2 3 K 1260 Coil Control Relay 24V 2 Bill of Material SEC PRI SEC PRI SEC PRI the MX250 from the line voltage further protecting the controller from harmful line transients Two versions of the R T box exist depending on the type of ATS standard transition or delayed transition The following layout drawings of the R T Box compo nents sta
19. 71R 2000 5 03 Operation and Maintenance Manual Entelli Switch 250 Microprocessor Controller Transfer Switch Control Panel GE Zenith Controls e Page Introduction 12 Safety 13 Equipment Inspection and Storage 13 Final Equipment Inspection 13 Installation 14 Engine Start Control Connections 14 Initial Energization 14 5 Control Connections 6 Entelli Switch 250 Microprocessor Controller 17 Overview 17 LCD amp Keypad 18 User Setting for Voltage amp Frequency 19 Accessory Group Packages 10 Accessory Definitions 11 14 How to Set the System Clock 14 CDT One Event Timer Exerciser 15 CDP Clock Exerciser 16 User Setup CFG Menu 17 User Setup SET Menu 18 User Setup System Info 19 Page Testing 120 I
20. ER FREQUENCY pg 9 Fail Restore S1 OVER VOLTAGE pg 12 Fail Restore S1 OVER FREQUENCY pg 9 Fail Restore S2 UNDER VOLTAGE pg 9 Fail Restore S2 UNDER FREQUENCY pg 9 Fail Restore S2 OVER VOLTAGE pg 9 Fail Restore S2 OVER FREQUENCY pg 9 Fail Restore SET PHASE IMBALANCE VI FAIL 5 RESTORE 3 pg 14 SET PHASE IMBALANCE VI TIME DELAY 30 seconds pg 14 SET USER SETUP MORE BACK 1 VAB ___ 2 VAB ___ VBC ___ VBC ___ VCA ___ VCA ___ MORE CFG SET ESC S1 OK 01 50 FRI 31 MAY 2003 MORE TEST Optional Accessories TIME DELAY S2 START P1 pg 12 TIME DELAY S2 STABLE W pg 14 LOAD PRESIGNAL TD T3 W3 pg 13 LOAD DISCONNECT TD UMD pg 13 ATS OPEN TIME TO S2 DW DELAY units only pg 11 TIME DELAY S1 STABLE T pg 13 ATS OPEN TIME TO S1 DT DELAY units only pg 11 S2 STOP DELAY U pg 13 CALIBRATE S1 pg 11 CALIBRATE S2 pg 11 Change adjustable values through the SET menu Enter six digit access code The factory assigned six digit access code is located on the back of the controller Figure 10 Network Communications Option 11 12 13 R1 Output 5 6 7 R1 Output 14 15 16 R2 Output 8 9 10 R2 Output Contact Rating 10A 277VAC or 30VDC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PROG 1 PROG 2 GRD Input
21. Electric Code articles 700 and 701 CAUTION Due to hazardous voltage and current GE Zenith rec ommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch WARNING Both power sources must be disconnected before manual operation of the switch WARNING When performing a hi pot or dielectric test on the power section DISCONNECT the control panel plugs from the microprocessor to avoid potential damage I GE Zenith Controls 31 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 A Product of GE Industrial Systems General Electric Company 830 West 40 thStreet Chicago IL 60609 USA 773 299 6600 Fax 773 247 7805 www geindustrial com g GE Zenith Controls
22. Installation of GE Zenith transfer switches includes a Mounting the transfer switch cabinet b Connection of Source 1 Source 2 and Load cables or bus bars c Connection of external control circuits as required Safety Installation DANGER HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components The safe operation of your switch is GE Zenith s focus The proper storage installation operation and mainte nance will help increase the life of the switch Equipment Inspection and Storage Once you have received the transfer switch inspect it for any damage This includes damage to the enclosure power panel control panel and wiring harness If any damage is found or suspected file a claim as soon as possible with the carrier and notify the nearest GE Zenith representative Before installation if it is necessary store the transfer switch in a clean dry place protected from dirt and water Provide ample air circulation and heat if neces sary to prevent condensation 5 to 95 non con densing 30 C to 75 C 22 F to 167 F 40 400 AMP molded shell 20 C to 65 C 4 F to 149 F 40 4000 AMP all other frame and panel types 20 C to 60 C 4 F to 140 F Operating Storage Temperature Temperature Ambient Humidity CAUTION Due to hazardous voltage and current GE
23. NSFORMER XE1 SOURCE 2 CONTROL TRANSFORMER XE2 SOURCE 2 3 PHASE SENSING TRANSFORMER SINGLE PHASE SOURCE 2 SENSING 3 PHASE SOURCE 1 SENSING SOURCE 1 CONTROL POWER SOURCE 2 CONTROL POWER 800 900 SOURCE 2 24V OUTPUT SOURCE 1 24V OUTPUT 18 1 3 PHASE SOURCE 2 SENSING 10V XE2 32 907 Standard Transition R T Box Schematic GND 903 902 801 901 807 804 803 904 905 906 805 806 CCEO COIL CONTROL RELAY OPEN SOURCE 2 CCNO COIL CONTROL RELAY OPEN SOURCE 1 GROUND CCE COIL CONTROL RELAY SOURCE 2 CCN COIL CONTROL RELAY SOURCE 1 COMMON J5 24V 10V 11V XE1 24V 10V 11V 10V XN1 XN2 CCN CCE XN1 SOURCE1 CONTROL TRANSFORMER XN2 SOURCE1 3 PHASE SENSING TRANSFORMER XE1 SOURCE 2 CONTROL TRANSFORMER XE2 SOURCE 2 3 PHASE SENSING TRANSFORMER 3 PHASE SOURCE 2 SENSING SINGLE PHASE SOURCE 2 SENSING 3 PHASE SOURCE 1 SENSING SOURCE 1 CONTROL POWER SOURCE 2 CONTROL POWER 800 900 SOURCE 2 24V OUTPUT SOURCE 1 24V OUTPUT 18 1 CCEO CCNO 908 808 20 21 22 31 30 10V XE2 32 907 Delayed Closed Transition R T Box Schematic Figure 15 Figure 16 I GE Zenith Controls 29 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Troubleshooting and Diagnostics HAZARDOUS VOLTAGES CAN CAUSE SEVERE INJURY OR DEATH These charts may indicate problems that require authorized GE Zenith s
24. PROG 1 PROG 2 GRD Input Sink LS OUT NIA OUT ELEV PRE OUT ALARM OUT STE OUT MOTOR DISC OUT TMS IN INHIB gt S1 INHIB gt S2 LS IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 12V Output Source LN OUT L4 OUT L3 OUT L2 OUT L1 OUT YN IN YE IN TSNL IN Q2 TSL IN S12 IN S5 IN 11 12 13 5 6 7 14 15 16 8 9 10 R1 1 2 R2 3 4 Output Contacts Output Contacts From J2 J4 Output J4 3 4 14 13 12 11 10 9 1 2 3 5 6 7 8 J2 3 N O N C To J2 J4 Input Customer Input Voltage WARNING 1 Controller inputs must be relay isolated 2 Controller ouputs have limited source capability Use only GE Zenith specified output modules Entelli Switch 250 TM Lithium Battery Exerciser Battery Replacement K 4100 BR2032 Service Life 10 Years During normal operation User Access Code Default 121212 Product Information www geindustrial com 24 Hour Service 773 299 6600 J4 J2 Input and output availability subject to factory configuration Figure 10 I 18 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Entelli Switch 250 User Setup SET Menu SET SYSTEM CLOCK pg 14 DAYLIGHT SAVINGS ON OFF CLOCK EXERCISER CDP pg 11 amp 16 EXER S2 RUNTIME CDT pg 11 amp 15 S1 UNDER VOLTAGE pg 9 Fail Restore S1 UND
25. Sink LS OUT NIA OUT ELEV PRE OUT ALARM OUT STE OUT MOTOR DISC OUT TMS IN INHIB gt S1 INHIB gt S2 LS IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 12V Output Source LN OUT L4 OUT L3 OUT L2 OUT L1 OUT YN IN YE IN TSNL IN Q2 TSL IN S12 IN S5 IN 11 12 13 5 6 7 14 15 16 8 9 10 R1 1 2 R2 3 4 Output Contacts Output Contacts From J2 J4 Output J4 3 4 14 13 12 11 10 9 1 2 3 5 6 7 8 J2 3 N O N C To J2 J4 Input Customer Input Voltage WARNING 1 Controller inputs must be relay isolated 2 Controller ouputs have limited source capability Use only GE Zenith specified output modules Entelli Switch 250 TM Lithium Battery Exerciser Battery Replacement K 4100 BR2032 Service Life 10 Years During normal operation User Access Code Default 121212 Product Information www geindustrial com 24 Hour Service 773 299 6600 J4 J2 Input and output availability subject to factory configuration I GE Zenith Controls 19 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Entelli Switch 250 User Setup System Info PHASE TO PHASE VOLTAGE S1 amp S2 FREQUENCY INDICATION FOR S1 amp S2 K P pg 11 PLANT EXERCISER Next Impending Exerciser shows only if set SYSTEM INFO Serial Unit Serial Rev Software Revision Event L
26. Source 2 Deactivating the test switch will start retransfer to Source 1 The switch will complete its retransfer to Source 1 after the time delay of the T timer The U engine overrun timer allows the engine generator to run unloaded for a preset cool down period Test Options The ATS can be tested in either of two positions 1 Auto Position Full Transfer Test This test checks the complete operation of the ATS by transferring the load s power source from Source 1 to Source 2 2 Test Position This procedure is recommended for Preventive Maintenance PM of ATS without interrupting the Load thru the BYPASS ISOLATION SWITCH NOTE A periodic test of the transfer switch under load conditions is recommended to insure proper operation See National Electric Code articles 700 and 701 CAUTION Due to hazardous voltage and current GE Zenith recommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch WARNING Both power sources must be disconnected before manual operation of the switch WARNING When performing a hi pot or dielectric test on the power section DISCONNECT the control panel plugs from the microprocessor to avoid potential damage I GE Zenith Controls 21 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Entelli Switch 250 Testing cont d NOTICE A periodic test of the transfer switch under
27. Zenith rec ommends that a GE Zenith Certified technician or a qualified electrician must perform the installation and maintenance of the switch WARNING Do not use a blower since debris may become lodged in the electrical and mechanical components and cause damage Final Equipment Inspection Prior to energizing the transfer switch 1 Remove any debris incurred with a vacuum due to shipment or installation 2 Verify that all cabled connections are correct and that phase rotation of both sources match 3 Check engine start connections 4 Verify the correct connection of all control wires 5 Check settings of all timers and adjust as necessary 6 Adjust any optional accessories as required 7 Check the lug torque values of the power connections NOTE Lug torque values are specified in the power panel manual 8 Make sure that all covers and barriers are installed and properly fastened NOTE Power panels ship from GE Zenith in Source 1 Position Table 1 I 4 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Installation cont d Engine Start Control Connections The engine start terminals are clearly identified by a label on the microcontroller backplate In the case of manual transfer switches or in other applications not requiring the microprocessor clearly marked terminal blocks are provided in the upper left corner of the con trol panel for the engine start
28. be found here are a Engine start relay P output b Pre Signal to transfer T3 W3 and UMD output optional c Transfer Inhibit Q3 and Q7 input optional d Remote test Q2 input optional e Network interface ZNET input output optional B LCD and Keypad located on the exterior of the door see figure 7 1 User accessibility to the following a LED indication of source availability b LED indication of transfer switch position c LCD screen indicates 1 timer count down numeric 2 event reporting text d Keypad provides user interface to in conjunction with LCD screen 1 Setting sensors and timers 2 Configuring logic accessories II The R T box relay transformer box contains the following see figure 6 A Relays which are required for controller output to energize the transferring mechanism of the transfer switch at line voltage B Transformers which drop line voltage to control level for controller input Figure 7 Figure 6 I O Interface R T Box Engine Start Relay P Battery Strip and Access Code Label Entelli Switch 250 Board S 1 O K 2 1 5 6 M O N 2 3 A P R 2 0 0 2 M O R E T E S T I 8 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Entelli Switch 250 Controller cont d Figure 8 LCD amp Keypad These options are accessible through the LCD and keypad see figure below To become familiar with the options loaded in
29. cal loads by automatically transferring from source 1 power to source 2 power in the event that source 1 voltage falls below preset limits Voltage sensing and system control is performed via a state of the art microcontroller located on the cabinet door It is designed to give highly accurate control of the transfer switch system All GE Zenith transfer switches are designed for use on emergency or standby systems and are rated for total system or motor loads Transfer switches are UL Listed under Standard 1008 and CSA Certified under Standard C22 2 No 178 and IEC Listed under Standard 947 NOTES A protective device such as a molded case circuit breaker or fused disconnect switch MUST be installed on both sources of incoming power for circuit protection and as a disconnection device All references made within this manual about the term S1 or Source 1 relate to a Normal Power Source All references made about the term S2 or Source 2 relate to an Emergency or Alternative Power Source I GE Zenith Controls 3 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Each GE Zenith transfer switch is factory wired and tested A complete information package is furnished with each switch which includes a Sequence of operation b Description and operation of all accessories supplied c Power panel connection diagram and schematic d Description and identification of all customer field connections
30. control wires Figure 2 shows location of engine start connections for Bypass Isolation Transfer Switch Figure 5 pg 6 shows location of engine start connections for Automatic Transfer Switch Terminals for field connections to the A3 Source 2 auxiliary contacts and the A4 Source 1 auxiliary contacts are also provided These terminals are clearly marked and appear on the side of the power panel On 400 amp metal frame units these terminals appear on the bracket above the operator handle DANGER HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components Initial Energization Before proceeding refer to the information package supplied with the ATS and read and understand the information on all accessories provided 1 Unlock the enclosure 2 Open the enclosure 3 Verify the correct system voltage NOTE The equipment rating nameplate on the transfer switch lists the voltage See Figure 3 4 Close Source 1 circuit breaker NOTE The controller will illuminate Source 1 Available LED if proper voltage is sensed 5 Verify the phase to phase voltages at Source 1 line terminals 6 Close Source 2 circuit breaker 7 Start the generator s engine NOTE The controller will illuminate Source 2 Available LED when preset voltage and frequency levels are reached 8 Verify the phase to phase voltages at Source 1
31. d Follow these steps to open the transfer switch 1 Disconnect all power sources from the transfer switch by opening all line breakers Source 1 and Source 2 2 Open the cabinet door and turn the disconnect switch to the INHIBIT position 3 Remove the service access cover on the left hand side of the transfer switch 4 The manual operator and the manual handle will now be exposed Insert the handle into the Source 2 side operator Open the Source 2 side contacts 5 Close the cabinet door 6 Energize Source 1 to supply the load until further repairs can be done ZBTSCT Transfer Bypass Switch a Auto Location Removal of closed transition transfer switch after Source 2 breaker shunt trip 1 Disconnect all power sources from bypass isolation transfer switch 2 Open the bottom cabinet door and turn the Disconnect Switch DS to the INHIBIT position 3 Remove the service access cover on the left hand side of the transfer switch 4 The manual operator and the manual handle will now be exposed Insert the handle into the Source 2 side manual operator Open the Source 2 side contacts 5 Close bottom cabinet door 6 Energize Source 1 power 7 Close the bypass contacts BN 8 Isolate the transfer switch 9 Remove the transfer switch from the bypass isolation transfer switch as indicated on the bypass instruction label to inspect and repair 10 Re install the transfer switch after maintenance with contacts closed to
32. ecified output modules Entelli Switch 250 TM Lithium Battery Exerciser Battery Replacement K 4100 BR2032 Service Life 10 Years During normal operation User Access Code Default 121212 Product Information www geindustrial com 24 Hour Service 773 299 6600 J4 J2 Input and output availability subject to factory configuration I 20 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Testing Introduction A manual operator handle is provided with the transfer switch for maintenance purposes only Manual operation of the switch must be checked before it is operated electrically Both power sources must be disconnected before manual operation of the switch Insert the handle and operate the transfer switch between the Source 1 and Source 2 positions The transfer switch should operate smoothly without binding Return the switch to the Source 1 position remove the handle and return it to the holder provided After completing the inspection cleaning and servicing of the transfer switch reinstall the switch cover and close and lock the cabinet door Reclose the circuit breakers feeding the utility and generator sources to the switch Initiate the electrical transfer test by activating the test switch P timer will time out and the microcon troller will send an engine start signal When the W time has elapsed the switch will complete its transfer by closing into the
33. en pressed A signal will be provided STE to Shunt Trip the Generator Circuit Breaker if the Transfer Switch remains closed into both Sources for more than 325 milliseconds The load will then be fed by the Source 1 The maximum time that the two Sources would be parallel under these conditions is less than 500 milliseconds Before operating the Closed Transition Transfer Switch the condition must be corrected and the Shunt Trip reset Refer to procedure for servicing the Switch after Shunt Tripping occures The unit is Factory set to accomplish transfer within 5 electrical degrees Requires an Isochronous Governor with an operating frequency of 60 0 2 Hz Requires a Shunt Trip Breaker on the Generator set with a response time not exceeding 50 milliseconds I 26 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Standard Transition Each MX250 microprocessor based ATS controller requires a relay transformer box to apply line voltage to the ATS operator via coil control relays Also required is power for the MX150 printed circuit board and an appli cation of sensing voltage proportional to line voltage This is accomplished by the relay transformer box This method of switching operator voltage and applying power and sensing voltage to the printed circuit board isolates R T Box Primary 1 VA 25 VA Assembly Voltage XFMR XFMR Part No at 50 60 Hz Part No Part No 57P 1015 120V K 321
34. er switch 9 Re install the transfer switch after maintenance with contacts closed to the same source as the bypass switch Reinstall the manual handle in its holder and the service access cover on the left side of the transfer switch 10 Re connect the transfer switch to AUTO DANGER HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components As described in the Sequence of Operation section located in the ZTSCT ZBTSCT Series Manual 71R 5000 I 24 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Sequence of Operation Standard Transition Source 1 Power Failure When Source 1 voltage or frequency has fallen below the preset Fail values the controller initiates the Time Delay Source 2 Start Timer Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore Values the time delay to Source 2 Timer W begins its timing cycle to ensure voltage and frequency stabilization before transfer A manual pushbutton BYPASS is provid ed to bypass the W time delay if desired After the W time delay the CCE relay energizes the CE solenoid to close the transfer switch in to Source 2 The SE limit switch activates to de energize the CCE relay Restoration of Source 1 Power When So
35. ervice personnel Hazardous voltages may exist on termination plugs other than those that go into the Entelli Switch 250 Symptom Annunciation Possible Cause s Corrective Action Engine does not START SOURCE 2 AVAILABLE LED off Engine start wires not terminated properly Check engine start connections Engine does not stop LCD Display TD Engine Cool Down SOURCE 1 POSITION and SOURCE 1 and SOURCE 2 AVAILABLE LEDs on but U timer has timed out U timing cycle not complete Engine start wires not terminated correctly Generator in MANUAL Check U timer setting Check Engine Start Connections Place generator in AUTO ATS will not transfer to SOURCE 2 SOURCE 2 AVAILABLE LED off None SOURCE 2 voltage or frequency not within acceptable parameters Power supply connector unplugged Check Engine Start Connections Generator Breaker Generator Output and Engine Control Switch Plug in connector ATS will not transfer to SOURCE 1 SOURCE 1 AVAILABLE LED off None SOURCE 1 voltage or frequency not within acceptable parameters Power supply connector unplugged Check utility and utility breakers Plug in connector General Troubleshooting The following troubleshooting guide is used to recognize and determine basic faults When using this guide it will ask several questions about the condition of the switch This guide will then list an order of the possible faults You will then look at
36. hen CFG 2 Press MORE to scroll to CONFIG TIMER EXERCISER screen 3 The third line of the CONFG TIMER EXERCISER will show either DAILY WEEKLY 14 DAY 28 DAY or OFF 4 If the third line of the CONFG TIMER EXERCISER shows DAILY WEEKLY 14 DAY or 28 DAY as desired then proceed to step 10 5 If the third line of the CONFG TIMER EXERCISER shows OFF or if another timer selection is desired continue 6 Press SEL 7 Enter ACCESS code located on white label on the back of the controller 8 Press UP or DOWN to select DAILY WEEKLY 14 DAY or 28 DAY as desired 9 Press SAVE 10 Press MORE to scroll to CONFG TIMER EXERCISER XFR or NO XFR 11 Press Up or Down to select XFR Load Transfer or NO XFR No Load Transfer 12 Press SAVE 13 Press MORE repeatedly to BACK then S1 OK screen Set SET the Exerciser 14 Beginning from the S1 OK screen press MORE then SET 15 Press MORE repeatedly until EXER S2 RUN TIME screen 16 Press SEL 17 Enter ACCESS code located on white label on the back of the controller 18 Press SEL 19 Cursor is indicated as a line under character to be changed Change values with up and down keys 20 Press SAVE when complete 21 Press MORE repeatedly until SET USER SETUP then press BACK then ESC to the S1 OK screen How to Initiate CDT Exerciser and to start an exercise cycle every 1 7 14 or 28 days From S1 screen 1 Press TEST 2 Press MORE 3 Press START TEST TIMER to initiate Test
37. itch including a complete connection diagram and schematic which details all necessary control circuit field connections The engine start control wires connect to the engine start relay terminals located to the left of the microprocessor Figure 5 shows the location of these terminals DANGER HAZARDOUS VOLTAGE Can Cause Severe Injury or Death Turn OFF all power before installation adjustment or removal of transfer switch or any of its components To R T Box To Power Panel Input Output Connectors to I O Modules Engine Start Connections Clock Program Backup Battery Remove protective strip to enable clock functions Network Connector Control Connections The terminals are clearly identified by a label on the microcontroller backplate In the case of manual trans fer switches or in other applications not requiring the microprocessor clearly marked terminal blocks are provided in the upper left corner of the control panel for the engine start control wires Figure 5 Entelli Switch 250 I GE Zenith Controls 7 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Entelli Switch 250 Controller Entelli Switch 250 Controller Consists of two major assemblies I The Microprocessor contains the following A Entelli Switch 250 Board Customer Input and Output I O for system interface Located on the left hand side of the back of the unit see figure 6 1 I O accessories that can
38. itors phase voltage ratios based on a selected range within a selected time window Should any phase fall below the selected lower window limit or exceed the selected higher window limit within the selected time frame the controller initiates transfer to the other source Range 5 to 20 of Nominal voltage 10 to 30 seconds window user adjustable Resolution 1 Increments Minimum Differential 2 between Fail and Restore settings Factory default 10 Fail 8 Restore 30 Seconds See CFG Menu page 17 to configure ON or OFF See SET Menu page 18 to set Percentage and time windows W Time Delay S2 Source 2 Stable Timer To delay trans fer to Source 2 Adjustable 0 5 minutes in 1 second increments Standard setting is 1 second Adjust via SET menu see page 18 YEN Bypass Timers Key utilizing Keypad When applicable the system prompts the user to press a button to bypass T or W Timers should the user so desires ZNET Network Communications Interface Card Accessory Definitions cont d I GE Zenith Controls 15 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Load or No Load One event Exerciser with adjustable Timer Exercise duration can be set between 5 and 60 minutes in 1 minute increments Can be configured to run every 1 7 14 or 28 days Factory default is 20 minutes How to CONFIGURE CFG and Set SET the Timer Exerciser 1 Beginning from the S1 OK screen press MORE t
39. lay Delay Open Time Delay Time Delay ATS Open Time Delay ATS Open S2 Stop Transition S2 Start S2 Stable Time to S2 S1 Stable Time to S1 Delay Source 1 Transfer to Source 2 Source 1 Transfer to Source 1 Engine Fails Returns Cooldown Table 3 I GE Zenith Controls 25 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Sequence of Operation cont d Closed Transition GE Zenith Closed Transition Transfer Switches are designed to Transfer the Load between two available sources with out interrupting power to the Load Make Before Break Paralleling of the two sources occurs within a predefined window of synchronization and lasts less than 100 milliseconds The initial Source is then disconnected Initiating a Closed Transition When a Test is initiated the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source 1 timer W begins its timing cycle After the W time delay the ATS closes into Source 2 only after the controller ensures the proper phase relationship between the two Sources After the ATS closes into Source 2 the SE limit switch becomes activated to de energize the CCE relay and energize the CCNO relay which opens the ATS out of Source 1 The SNO limit switch activates to de energi
40. lay S2 Start Adjustable 1 6 to 300 seconds Q2 Remote Peak Shave or Area Protection Circuit Energize Q2 to simulate Source 1 Line failure causing the Generator to start and transfer the load to Source 2 Should Emergency fail during this operation Transfer Switch will retransfer back to Source 1 Q3 Remote inhibit transfer to Source 2 circuit Energize Q3 input to allow transfer to Source 2 To enable Q3 option engage Q3 jumper Q7 Inhibit transfer to Source 1 circuit Energize Q7 input to prevent transfer to Source 1 R1 1 R1 3 Source 1 Over Voltage sensing for single and three phase systems Source 1 Over Voltage Fail Factory Default 110 This adjustment determines the maximum acceptable over voltage Adjust via the SET menu Range is 105 to 110 in 1 increments see page 18 Once exceeded the P timer begins timing to signal the Generator to start Source 1 Over Voltage Restore Factory Default 105 This adjustment determines the minimum acceptable over Voltage threshold at which the Transfer Switch is allowed to automatically transfer to Source 1 Adjust via SET menu Range is 103 to 108 in 1 increments Restore must be a minimum of 2 below Fail setting see page 18 R15 R15D Load Shed Should Source 2 become overloaded a signal can be given to switch to the dead or Mid position R16 Phase Rotation Sensing Can be turned on or off via CFG menu see page 17 Factory Default is on This feature prevents Line S
41. load conditions is recommended to insure proper operation See National Electric Code articles 700 and 701 ATS Testing Start generator and verify proper voltage frequency and phase sequence match to Source 1 Shut down gen set and place in Auto Complete the visual inspection of the transfer switch and close the cabinet door Initiate the test by pressing the TEST button on the LCD keypad The controller will then prompt for your access code After entering the code three test options will appear XFR LOAD FAST TEST and NO XFR See Figure 11 XFR LOAD test starts the generator and using the current timer settings transfers the load to Source 2 FAST TEST test presets timer values to a maximum 30 seconds during the test After completion of the test all timers are reset to their original values T3 W3 DT and DW remain NO XFR test starts the generator but does not transfer the load to the Source 2 Press and hold the desired test option button until the switch transfers to Source 2 load test or until the generator has been run for the desired amount of time no load test Releasing the test button before W timer timeout will abort the test Exception when the transfer commit option is configured ON To test lamps press TEST then scroll through MORE then press LAMP TEST To cancel LAMP TEST press MORE Standard Transition When the test is initiated the controller initiates the Time Delay
42. ndard and delayed transition include a bill of materials for replacement parts Schematics are included to indicate proper wiring 1 2 inside 3 1 2 3 Figure 13 Figure 12 I GE Zenith Controls 27 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Delayed Closed Transition Relay Transformer R T Box cont d R T Box Primary 1 VA 25 VA Assembly Voltage XFMR XFMR Part No at 50 60 Hz Part No Part No 50P 1034 120V K 3216 K 3224 50P 1035 208 220V K 3217 K 3225 50P 1036 230 240V K 3218 K 3226 50P 1037 277V K 3219 K 3227 50P 1038 380 400V K 3220 K 3228 50P 1039 416 440V K 3221 K 3229 50P 1040 460 480V K 3222 K 3230 50P 1041 575 600V K 3223 K 3231 Transformer Usage Item Part No Description Qty 1 See Chart Transformer 25 VA 2 2 See Chart Transformer 1 VA 2 3 K 1260 Coil Control Relay 24V 4 Bill of Material SEC SEC PRI PRI 1 2 3 Figure 14 I 28 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Relay Transformer R T Box cont d 20 21 22 31 30 GND 903 902 801 901 807 804 803 904 905 906 805 806 BLANK BLANK GROUND CCE COIL CONTROL RELAY SOURCE 2 CCN COIL CONTROL RELAY SOURCE 1 COMMON J5 24V 10V 11V XE1 24V 10V 11V 10V XN1 XN2 CCN CCE XN1 SOURCE 1 CONTROL TRANSFORMER XN2 SOURCE 1 3 PHASE SENSING TRA
43. ns its timing cycle After the DT time delay the CCN relay energizes the CN solenoid to complete re transfer of the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the S2 Stop Delay Timer Delay to Engine Stop U begins its cycle to allow Source 2 Engine to run unloaded A manual pushbutton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the controller sends an Engine stop signal I 22 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Testing cont d NOTICE A periodic test of the transfer switch under load conditions is recommended to insure proper operation See National Electric Code articles 700 and 701 Closed Transition GE Zenith Closed Transition Transfer Switches are designed to Transfer the Load between two available sources with out interrupting power to the Load Make Before Break Paralleling of the two sources occurs within a predefined window of synchronization and lasts less than 100 milliseconds The initial Source is then disconnected Initiating a Closed Transition When a Test is initiated the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source
44. nt Keyed or non keyed operation available SW2 Auto Off Engine control selector Door mount Keyed or non keyed operation available SW3 Source Priority Selector Switch Door mount Allows selection of Source 1 or Source 2 to be the Prime Source Transfer Switch will transfer to selected Prime Source if that Source is available Keyed or non keyed operation available T Time Delay S1 Source 1 Stable Timer To delay trans fer to Source 1 immediate retransfer on Source 2 fail ure Adjustable 0 60 minutes in 1 second increments Standard setting is 30 minutes Adjust via SET menu see page 18 T3 W3 Elevator Pre Signal Auxiliary Contacts Open 0 60 seconds prior to transfer to either direction re closes after transfer U S2 Source 2 Stop Delay Timer Allows Engine to run unloaded after switch retransfer to Source 1 Adjustable 0 60 minutes in 1 second increments Standard setting is 5 minutes Adjust via SET menu see page 18 UMD Universal Motor Load Disconnect Circuit Auxiliary Contact opens 0 60 seconds prior to transfer in either direction re closes after transfer Can be configured by end user for Pre transfer Post transfer or both I 14 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 How to Set the System Clock How to Set the System Clock Set System Clock time and date If the clock is not set the display will show SET SYSTEM CLOCK on the second line of the S1 OK screen
45. ntroduction 120 Test Options 20 Standard Transition 121 Delayed Transition 21 Closed Transition 22 Emergency Service Procedure for Extended Parallel Time 23 Sequence of Operation 24 Standard Transition 124 Delayed Transition 24 Closed Transition 25 Relay Transformer R T Box 26 Standard 126 Delay 127 Schematics 128 Troubleshooting amp Diagnostics 29 Maintenance and Testing 30 Inspection and Cleaning 30 Servicing 130 Testing 130 Table of Contents Introduction Authorized Service For GE parts and service call 773 299 6600 GE Zenith Transfer Switches are used to provide a continuous source of power for lighting and other criti
46. ntroller sends an Engine stop signal Delayed Transition Source 1 Power Failure When the test is initiated the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle A manual CANCEL button is provided to cancel the test if desired Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source 1 timer W begins its timing cycle to ensure voltage and frequency sta bilization before re transfer A manual pushbutton BYPASS is provided to bypass the W time delay if desired After the W time delay the CCNO relay energizes the CNO solenoid to open the transfer switch out of Source 1 position The time delay to Source 2 timer DW begins its timing cycle After the DW time delay the CCE relay energizes The switch then completes transfer to Source 2 by energizing the CE solenoid The SE limit switch activates to de energize the CCE relay Restoration of Source 1 Power Deactivating the test switch initiates re transfer to Source 1sequence The delay to open Source 2 Timer T begins its tim ing cycle to ensure voltage and frequency stabilization before retransfer A manual pushbutton BYPASS is provided to bypass the T time delay if desired After the T time delay the CCEO relay energizes the CEO solenoid to open the switch out of Source 2 position The time delay to Source 1 timer DT begi
47. of the access code The factory set six digit access code is located on a white label on the back of the unit see figure 10 pgs 17 19 The Entelli Switch 250 has many logic options Each controller is downloaded with options at the time of manufacture The collection of options that any one controller has is specified at the time of order placement The following pages include all the options that can reside in the controller Not all units include all options I GE Zenith Controls 9 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 User Setting for Voltage amp Frequency Standard 3 Phase Sensing on 3 and 4 Pole Units Source 1 Under Voltage Restore Factory Default 90 This adjustment determines the minimum acceptable voltage required to transfer to Source 1 Adjust via the SET menu Range is 85 to 100 in 1 increments see page 18 Once satisfied the T timer will begin timing to transfer to Source 1 Under Voltage Fail Factory Default 80 This adjustment determines the low voltage threshold Adjust via the SET menu Range is 75 to 98 in 1 increments see page 18 Fail must be a minimum of 2 below Restore setting Once voltage falls below threshold P timer begins timing to signal Source 2 Generator to start Under Frequency Restore Factory Default 95 This adjustment determines the minimum acceptable frequency required to transfer to Source 1 Adjust via the SET menu Range is 90 to
48. og Sequentially Numbered Log of 16 events that track date time reason and action taken Data Total Life Transfers N2P Days Powered Up Total Transfers to S2 Total S1 Failures Time S1 available in Hrs Time S2 available in Hrs N1P CHANGE USER ACCESS CODE S1 OK 01 50 FRI 31 MAY 2003 MORE TEST View System Data Enter six digit access code The factory assigned six digit access code is located on the back of the controller Figure 10 Network Communications Option 11 12 13 R1 Output 5 6 7 R1 Output 14 15 16 R2 Output 8 9 10 R2 Output Contact Rating 10A 277VAC or 30VDC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PROG 1 PROG 2 GRD Input Sink LS OUT NIA OUT ELEV PRE OUT ALARM OUT STE OUT MOTOR DISC OUT TMS IN INHIB gt S1 INHIB gt S2 LS IN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 12V Output Source LN OUT L4 OUT L3 OUT L2 OUT L1 OUT YN IN YE IN TSNL IN Q2 TSL IN S12 IN S5 IN 11 12 13 5 6 7 14 15 16 8 9 10 R1 1 2 R2 3 4 Output Contacts Output Contacts From J2 J4 Output J4 3 4 14 13 12 11 10 9 1 2 3 5 6 7 8 J2 3 N O N C To J2 J4 Input Customer Input Voltage WARNING 1 Controller inputs must be relay isolated 2 Controller ouputs have limited source capability Use only GE Zenith sp
49. ource to Line Source trans fers from occurring between dissimilar phase sequences This condition is primarily caused by an installation error Connections from Source 1 and Source 2 need be verified compared and corrected to remedy the inconsistent phase rotation between the sources WARNING Turning off this feature can cause severe damage to loads R26 Interruptable Power Rate Provisions Allow transfer out of Source 1 position to Source 2 or dead Source 2 Alarm and Pre Signal circuit included R50 In Phase Monitor this feature restricts Live to Live Source Transfers to occur unless both Sources are within 7 electrical degrees or less of each other live Source to live Source transfers usually occur during transfer back to Source 1 or during Testing R50 does not change the operation of the Automatic Transfer Switch in a power failure mode After all timer functions have elapsed the CHECKING FOR SOURCE SYNCHRO NISM will be displayed as well as the direction of transfer S1 S2 for example denotes transfer from Source 1 to Source2 When synchronism is accomplished transfer will take place Accessory Definitions cont d I GE Zenith Controls 13 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Accessory Definitions cont d Notes If S2 Frequency is less than S1 Frequency display will show a series of symbols If S2 Frequency is greater than S1 Frequency display will show a series of
50. pection of the transfer switch 12 Close the enclosure 13 Lock the enclosure Figure 4 LCD and keypad Initial Energization cont d After all options and accessories are checked and verified follow these steps to set up the ATS Refer to Entelli Switch 250 display Figure 4 The annunciation LEDs illuminate to indicate 1 source availability 2 ATS position and 3 Entelli Switch 250 control function timing 1 Unlock the enclosure 2 Open the enclosure 3 Place the Disconnect Switch in the Inhibit NOTE This step is only performed if the DS Option was purchased 4 Close the external up stream Source 1 circuit breaker NOTES Source 1 Available and Source 1 Position LED s will illuminate If Source 1 Available LED does not illuminate verify that Source 1 Voltage is above the preset restore value The Gen Set will start and run while Source 2 stop Delay Timer is timing 5 Close the External up stream Source 2 line circuit breaker 6 Start the engine generator in MANUAL mode WARNING When performing a hi pot or dielectric test on the power section DISCONNECT the control panel plugs from the microprocessor to avoid potential damage S 1 O K 2 1 5 6 M O N 2 3 A P R 2 0 0 2 M O R E T E S T I 6 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Installation cont d A complete information package is furnished with each transfer sw
51. quency can be adjusted accordingly Calibration capabilities are available for Frequency and AB BC CA Phase to Phase voltage for both Sources Adjust via SET menu see page 18 CDP Clock Exerciser Load No Load Allows the Generator to start and run unloaded or to simulate a power failure start Generator and run under load Can be configured by end user for 1 7 14 28 365 day cycle See page 16 CDT Load or NO Load One event exerciser with adjustable Engine exercise timer Exercise duration can be set between 5 and 60 minutes in 1 minute increments Can be configured to run every 1 7 14 or 28 days Factory Default is 20minutes When exerciser is impending E appears in the upper right hand corner of LCD screen See page 15 for instructions Configured via CFG see page 17 Set via SET menu see page 18 CTAP Alarm Panel on transfer to Source 2 with Silence button DS Disconnect Switch Auto Inhibit Inhibits transfer in either direction when in inhibit Allows automatic operation when in Auto 40 400 Amps optional 600 4000 Amps standard DT Delayed Transition Only Time Delay from Neutral Switch position to Source 1 position Adjustable 0 10 minutes in 1 second incre ments Standard setting is 5 seconds Adjust via SET menu see page 18 DW Delayed Transition Only Time Delay from Neutral Switch position to Source 2 position Adjustable 0 10 minutes in 1 second incre ments Standard setting is 5 seconds Adjust via SET
52. ress TEST 2 Press MORE 3 Press EXER CANCL 4 Press START TIMER TEST How to check the next exercise event 1 From S1 OK screen press MORE three times 2 The unit will display the PLANT EXERCISER NEXT event in DAYS HOURS and MINUTES 3 Press ESC to S1 OK Screen Notes E appears in the upper right hand corner of LCD screen when exercise is impending For Load Exerciser actual exercise period ATS in S2 position CDT Exerciser timing period T S1 stable Timer timing period CDT One Event Timer Exerciser I 16 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 SET EXERCISER 00 00 To save value and to move cursor to next field to be changed Indicates of Exercise Periods BACK v SAVE Indicates type of Exerciser DAILY WEEKLY 14 DAY 28 DAY or 365 DAY Indicates Exerciser start Time for DAILY Exerciser Time amp Day for WEEKLY Exerciser Time Date amp Month for 14 DAY 28 DAY and 365 DAY Exerciser 24 Hour System To previous field or to exit screen Up and Down Use to change values Cursor NL 1 Load No Load CDP Exercise Indicator Exercise duration for this event in hours and minutes up to 10 hours per event CDP Clock Exerciser Load No Load Clock Exerciser Allows the Generator to start and run unloaded or to simulate a power failure start Generator and run under load Can be configured by the end user for 1 7 14 28 or 365 day
53. the first suspected fault to determine if it is the problem If it is not a fault you go to the Generator is in OFF position Investigate why Engine Control Switch was turned off LCD Display S1 _ _ _ _ TD XFR S1 gt S2 Time Remaining _ _ _ _ W timing cycle not complete Check WTimer setting LCD Display Diagnostic Code 001 LCD Display S1 OK Time Remaining _ _ _ _ Bypass Limit switch or RT box connector unplugged T timing cycle not complete Call Technical Services Check TTimer setting LCD Display ATS Open Time Remaining _ _ _ _ DW timing cycle not complete Check DWTimer setting ZTG Series LCD Display ATS Open Time Remaining _ _ _ _ TD timing cycle not complete Check DTTimer setting ZTGD Series DANGER second suspected fault If you go through all of the suspected faults or the chart instructs you to call a GE Zenith Representative for further assistance NOTE When you use the troubleshooting charts the Annunciation column refers to the LED s on the control panel Table 4 I 30 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Maintenance and Testing A preventive maintenance program will insure high reliability and long life for the transfer switch The preventive maintenance program for the transfer switch should include the following items Inspection and Cleaning The switch should be inspected for any accum
54. to a particular unit scrolling through the SET and CFG menu will show the descriptions of the options see pages 17 18 These menus are the very same menus that are used to access the setting and or configuration of these options The SET setting menu is primarily used to show or change time and voltage settings The CFG menu is primarily used to turn an option on or off When scrolling through these menus Entelli Switch 250 S1 OK 01 50 FRI 31 MAY 2003 Source 2 Red indicates Source 2 is acceptable for use Source 1 LED Green indicates Source 1 is acceptable for use Exercise Event Impending SET Menu MORE CFG TEST SET 1 or the word on the LCD above the key The word above the key changes depending on which screen is being displayed 2 or the word on the LCD above the key The word above the key changes depending on which screen is being displayed 3 or the word on the LCD above the key The word above the key changes depending on which screen is being displayed 4 or the word on the LCD above the key The word above the key changes depending on which screen is being displayed Current Time Day and Date of Display Source 1 Position LED Green indicates Power Panel ATS is closed to Source 1 position Source 2 Position LED Red indicates Power Panel ATS is closed to Source 2 position Menus MORE CFG TEST Keypad E LCD Screen no changes can be made without entry
55. ulation of dust dirt or moisture and should be cleaned by vacuuming or wiping with a dry cloth or soft brush do not use a blower since debris may become lodged in the electrical and mechanical components and cause damage Remove the transfer switch barriers and check the condition of the contacts Any surface deposits must be removed with a clean cloth do not use emery cloth or a file If the contacts are pitted or worn excessively they should be replaced A general inspection of mechanical integrity should be made to include loose broken or badly worn parts Servicing All worn or inoperative parts must be replaced using GE Zenith recommended replacement parts Please refer to the Replacement Parts manual for specific part information and ordering procedures Please contact the GE Zenith Technical Services Department for the Replacement Parts manual The operating mechanism of the transfer switch is lubricated with Lubriplate 105 The lubricant applied at the factory provides adequate lubrication for the lifetime of the switch Should debris contaminate the mechanism clean and apply additional Lubriplate GE Zenith can provide complete preventative main tenance services Please contact the GE Zenith Technical Services Department for additional information CDT battery replacement lithium batteries may last up to 10 years however it is recommended that battery replacement be included in a 3 5 year service cycle The battery
56. urce 1 power reach the preset Restore values the controller initiates re transfer to Source 1sequence The delay to Source 1 Timer T begins its timing cycle to ensure voltage and frequency stabiliza tion before retransfer A manual pushbutton BYPASS is provided to bypass the T time delay if desired After the T time delay the CCN relay energizes the CN solenoid to retransfer the switch to Source 1 The SN limit switch activates to de energize the CCN relay Immediately after re transfer the S2 Stop Delay Timer Delay to Engine Stop U begins its cycle to allow Source 2 Engine to run unloaded A manual pushbut ton BYPASS is provided to bypass the U time delay if desired Upon completion of the U timing cycle the controller sends an Engine stop signal Delayed Transition Source 1 Power Failure When Source 1 voltage or frequency has fallen below the preset Fail values the controller initiates the Time Delay Source 2 Start Engine Start Timer P cycle Upon completion of the P time delay an Engine start Signal is sent to Source 2 When Source 2 voltage and frequency reach the preset Restore values the time delay to open Source 1 timer W begins its timing cycle to ensure voltage and frequency stabiliza tion before re transfer A manual pushbutton BYPASS is provided to bypass the W time delay if desired After the W time delay the CCNO relay energizes the CNO solenoid to open the transfer switch out of Source
57. urces are available If while in Closed Transition Mode the ATS fails to open the source it is attempting to transfer out of within 100 milliseconds an Alarm will sound and the source that the ATS just closed into will be opened leaving the ATS in its initial source while disabling all other transfer operations until the problem is corrected and the Fail to Open Lockout Reset has been pressed A signal will be provided STE to Shunt Trip the Generator Circuit Breaker if the Transfer Switch remains closed into both Sources for more than 325 milliseconds The load will then be fed by the Source 1 The maximum time that the two Sources would be parallel under these conditions is less than 500 milliseconds Before operating the Closed Transition Transfer Switch the condition must be corrected and the Shunt Trip reset Refer to procedure for servicing the Switch after Shunt Tripping occures The unit is Factory set to accomplish transfer within 5 electrical degrees Requires an Isochronous Governor with an operating frequency of 60 0 2 Hz Requires a Shunt Trip Breaker on the Generator set with a response time not exceeding 50 milliseconds I GE Zenith Controls 23 I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Testing cont d Emergency Service Procedure for Extended Parallel Time ZTSCT Transfer Switch If Source 2 breaker shunt trip was triggered after an extended parallel time malfunction occurre
58. ximum acceptable Over Frequency Adjust via the SET menu Range is 103 to 105 in 1 increments see page 18 Once exceeded the T timer will be bypassed to expedite the transfer to Source 1 Over Frequency Restore Factory Default 102 This adjustment determines the minimum acceptable Over Frequency threshold at which the transfer switch is allowed to re transfer to Source 2 Adjust via the SET menu Range is 102 to 104 in 1 increments see page 18 Restore must be a minimum of 1 below Fail setting I 10 GE Zenith Controls I Entelli Switch 250 Operation and Maintenance Manual 71R 2000 Accessory Group Packages Accessories 6P A1 A1E A3 A4 Calibrate CDT CDP DS DT DW E EL P K P L1 L2 L3 L4 LN P1 Q2 Q3 Q7 R1 1 R1 3 R15 R15D R16 R50 S5P S12P S13P T T3 W3 U UMD VI W YEN STDS EXES CONS SENS SPES PSGS 2 2 2 2 2 2 2 2 3 3 2 2 2 2 2 2 2 2 2 2 2 2 Group Packages 2 2 3 Standard Accessory included in the group package Optional Accessory not included but can be added to group package Optional Accessory Can not be used with accessory having the same symbol N A Denotes an Accessory with 2 circuits as a standard Denotes an Accessory with 3 circuits as a standard Table 2 Delayed Transition Units Only Optional for 40
59. ze the CCNO relay The ATS has now closed into Source 2 position without interrupting the load Re Transfer with Closed Transition Deactivating the Test Switch initiates the re transfer When Source 1 voltage and frequency reach the preset Restore values the time delay to open Source 2 timer T begins its timing cycle After the T time delay the ATS closes into Source 1 only after the controller ensures the proper phase relationship between the two Sources After the ATS closes into Source1 the SN limit switch becomes activated to de energize the CCN relay and energize the CCEO relay which opens the ATS out of Source 2 The SEO limit switch activates to de ener gize the CCEO relay The ATS has now closed back into Source 1 position without interrupting the load The ATS defaults to an open transition transfer when Source 1 fails Closed transition transfer is not possible with only one source available If the optional Transition Mode Selector TMS is available one can select an Open Transition Transfer or a Closed Transition Transfer when both Sources are available If while in Closed Transition Mode the ATS fails to open the source it is attempting to transfer out of within 100 milliseconds an Alarm will sound and the source that the ATS just closed into will be opened leaving the ATS in its initial source while disabling all other transfer operations until the problem is corrected and the Fail to Open Lockout Reset has be
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