Emerson 7400 Power Supply User Manual
Contents
1. Line Connections Refer to the Wiring Diagram provided with the switch All wiring must be made in accordance with the National Electrical Code and local codes Do not remove the interphase barriers from the transfer switch Always protect the transfer switch bypass switch and isolation contacts and mechanisms from construc tion grit and metal chips when cabling A DANGER De energize the conductors before making any line or auxiliary circuitry connections Be sure that Normal and Emergency line connections are in proper phase rotation Place engine gen erator starting control in the OFF position Make sure engine generator is not in operation INSTALLATION Testing Power Conductors Do not connect the power conductors to the transfer switch until they are tested Installing power cables in conduit cable troughs and ceiling suspended hangers often requires considerable force The pulling of cables can damage insulation and stretch or break the conductor s strands For this reason after the cables are pulled into position and before they are connected they should be tested to verify that they are not defective or have been damaged during installation Protect the switch from construction grit and metal chips to prevent malfunction or shortened life of the 7ADTB switch Connecting Power Conductors After the power cables have been tested connect them to the appropriate terminal lugs on the bypass sw2. The Automatic Transfer amp Bypass Isolation Switch should be left in this position NOTE When Accessory 40 B reversed Normal amp Emergency connections is specified the handle push pull operation is reversed Follow instructions on the door A auxiliary circuits 1 2 barriers interphase 3 4 3 5 bypassing the ATS 3 1 3 2 C catalog number 1 1 cleaning 2 1 connections power 1 1 contact inspection 3 4 3 5 controller disconnecting 2 1 see Controller User s Guide D delayed transition transfer 1 4 see Controller User s Guide E electrical operation 1 4 Emergency Source Accepted light 1 3 engine starting contacts 1 2 F foundation 1 1 frequency generator 2 2 functional test 1 2 1 3 1 4 H harness 1 2 disconnect plugs 2 1 HELP customercare asco com 800 800 2726 ASCO Printed in U S A INDEX R indicators contact position 2 2 2 3 rating label cover inspection 3 1 replacement parts 2 1 installation 1 1 interlocked weights 2 3 return to service 3 5 3 6 3 7 interphase barriers 3 4 3 5 isolating the ATS 3 3 3 4 S L service lifting device transfer switch 3 4 ASCO Services Inc ASI 2 1 lights 1 2 1 3 3 1 3 2 3 3 settings load connected to emergency 1 3 see Controller User s Guide load connected to normal 1 3 Load Disconnect Active light 1 4 T lubrication 2 1 M test functional
3. ASCO 7000 Series 7ADTB Operator S Automatic Delayed Transition Transfer Manual amp Bypass lsolation Switches J design 150 through 600 amp A DANGER Refer to the outline and wiring drawings provided S with your 7000 Series ADTB for all installation and DANGER IS used in this manual to warn of high connection details and accessories voltages capable of causing shock burns or death Refer to Group 5 Controller User s Guide 381333 126 for ATS status display messages time delays pickup WARNING is used in this manual to warn amp dropout settings and adjustments of possible personal injury An experienced licensed electrician must install the TADTB CAUTION is used in this manual to warn of possible equipment damage Rating Label Each 7000 Series 7ADTB contains a rating label to define the load and fault circuit withstand closing ratings Refer to the label on the Transfer Switch for specific values Do not exceed the values on the rating label Exceeding the rating can cause personal injury or serious equipment damage a TABLE OF CONTENTS section page INSTALLATION MOUNDIN esas carat gr E eae uses eet 1 1 Power Connections 005 1 1 Engine Starting amp Auxiliary Circuits 1 2 Functional Test 05 1 2 1 3 1 4 TESTING amp SERVICE Transfer Test sees se ee lt etedn canes ee ean 2 1 Preventive Maintenance 2 1
4. Turn crank clockwise until indowe shows TEST Automatic Transfer Switch Figure 3 18 TEST to CONN connected position U ber light aula be on TS CONNECTED O TS TEST O TS ISOLATED a MANUAL OPERATION Se SEES CAN USED FOR MANJA SOURCE F THE AUTOMATIC TRANSFER SET ROTATE THE BYPASS HANDLE TO OPEN THE WA Tae ALTERNATE SOURCE AS SHOWN DI STE er TURN TO AUTOMATIC OPERATION Se F TRANSFER SWATCH HAS BEEN siom woo y QEFER TC OPERATOR S MANUAL damar ROTATE ISOLATION HANDLE CLOCKS aes CH MUST GE CU RANS ER ow a AUTOMAJK 4 ROTATE GOLATION s ROME THE BYPAS HANDLE TURNS GREES CONN TURN TOCONNECT 7 position clockwise draws in window CONA the transfer switch Figure 3 19 Isolation Handle turned to CONN BYPASSING amp SOAT RETURN TO SERVICE continued This procedure explains how to return the Bypass Switch Handle to the OPEN position The Bypass Handle must be in the CLOSED position yellow indicator on NOR MAL or EMERGENCY and the Isolation Handle must be in the CONN position window See Figures 3 20 3 21 and 3 22 You can only bypass to the same source that the ATS is connected Solenoid interlock prevents incorrect operation 1 Observe which Bypass Switch Position indicator is yellow NORMAL or EMERGENCY at the Bypass Switch Handle This indicates the source connected to the load 2 Un Bypass to same source as the Bypass Switch Position a
5. pan Pa ee OS ee SH WIENEN o Ye a a Figure 3 14 Barrier removal BYPASSING amp ISOLATING RETURN TO SERVICE This procedure explains how to return the automatic transfer switch ATS to service after inspection and maintenance Observe the Bypass Switch Position indica tor and lights 1 Use the two tab handles to roll the transfer switch into the enclosure isolation contacts facing inward until the crank bearings stop against the draw in plates Then push in both side rails and close the enclosure door ee tab handles left rail right rail Figure 3 15 Transfer switch isolated and pulled out for inspection 2 Turn Isolation Handle clockwise approx 6 turns until the window shows TEST and TS TEST light comes on Turn crank clockwise until windo shows A TEST Automatic Transfer Switch Figure 3 16 ISOLATE to TEST position continued Tts connecten oO TS TEST O TS ISOLATED Middle amber light should come on R MANUAL OPERATION SypAes SWITCHES CAN BE USED FOR MANJA raeaTic TRANSFER WT pi f A TTT PASS gt TURN TO CONNECT TURN TO ISOLATE position clockwise draws in window TESI G the transfer switch Figure 3 17 Isolation Handle turned to TEST 3 The ATS can be tested now without load interruption see page 2 1 Solenoid interlock prevents you from
6. 1 2 1 3 1 4 r cables 1 1 maintenance preventive 2 1 testing power cables maintenance handle 2 3 time delays 2 1 warning 2 3 see Controller User s Guide manual load transfer 2 3 warning 2 3 Transfer Control selector switch Retransfer Delay Bypass 1 3 N Transfer Test 1 3 Transfer Switch Connected To ame Emergency light 1 3 Normal Source Accepted light 1 3 Transfer Switch Connected To O Normal light 1 3 operation transfer test 1 4 2 1 electrical 1 4 manual 2 3 transfer to emergency 1 4 2 1 warning 2 3 l transfer to normal 1 4 2 1 optional accessories see Controller User s Guide troubleshooting 2 2 parts 2 1 V phase rotation check 1 3 voltage checks 1 3 preventive maintenance 2 1 voltage pickup and dropout settings problem 2 2 see Controller User s Guide Copyright 2007 ASCO Power Technologies L P
7. 4 Bypass Handle and three position window indicators NOTE The 7ATB contains mechanical window indicators for the bypass switch and transfer switch positions in addition to the LED status lights Allowable Positions of the Bypass Switch in relation to Positions of the Transfer Switch with Isolation Handle in the Conn connected position and TS Connected light on Bypass Switch can be in either Transfer Switch If Transfer Switch is in Normal position Open or Normal If Transfer Switch is in Emergency position OPen or Emergency BYPASSING amp ISOLATING continued To Bypass Normal Source Load connected to Normal Source The Transfer Switch Connected To Normal light is on and Transfer Switch Connected To Emergency light is off Push in the handle and turn it counterclockwise Push in the Bypass Handle all the way then turn it counterclockwise until Bypass Switch Position shows closed on NORMAL yellow window indicator The green light Bypassed to Normal will come on and the amber light Not In Automatic will flash Push in Bypass Switch Bypass Handle and turn it counter clockwise Figure 3 5 Bypass to Normal diagram BYPASS SWITCH BYPASSED TO NORMAL Upper green light comes on BYPASSED TO EMERGENCY BYPASS switt Lower window indicator NORMAL shows yellow PASS MAMOLE TURNS EEN OPEN MOICATOR TO THE RIGH
8. Disconnecting the Controller 2 1 Manual Load Transfer 2 2 Trouble Shooting 000 cease 2 2 BYPASSING amp ISOLATING Bypassing the ATS 08 3 1 3 2 Isolating the ATS 0008 3 3 3 4 Return to Service 3 5 3 6 3 7 INDEX ccdeecdeeansetiarckecacas back cover ee we ASCO Power 50 Hanover Road Florham Park New Jersey 07932 1591 USA 381333 309 Technologies For sales or service call 1 800 800 2726 ASCO www ascopower com ASCO POWER TECHNOLOGIES CANADA PO Box 1238 17 Airport Road Brantford Ontario Canada N3T 5T3 telephone 519 758 8450 fax 519 758 0876 for service call 1 888 234 2726 ASCO www asco ca EMERSON Network Power Nameplate Catalog Number Identification The Transfer Switch nameplate includes data for each Typical 7000 Series ADTB catalog no for overlapping specific 7000 Series ADTB Use the switch only within the neutral 3 pole 600 amp 480 V ATS in Type 1 enclosure limits shown on this nameplate A typical Catalog Number is Shown below with its elements explained JZJADTB C 3 60 N 5 tC ea Neutral Phase Poles Amperes Voltage Controller Enclosure A solid 2 single 150 A 115 J 400 5 standard C type 1 B switched 3 three 260 B 120 K 415 BX i i type 3R 400 C 208 L 440 accessories TPES D 220 M 460 ordered L type 12 blank none 600 E
9. at least transfer the load to the to time out breaker must be closed 90 of nominal phase to emergency source after the Generator frequency must be phase voltage between engine generator set starts at least 95 of nominal 57 Hz terminals EA and EC or EL1 for a 60 Hz system and EL2 for 2 pole switches Transfer switch does not Wait for Feature 3A time delay Voltmeter should read at least transfer the load to normal to time out 90 of nominal phase to source when normal returns phase voltage between or when the Transfer Control 7 terminals NB and NC NC and switch is released NA and NA and NB or NL1 and NL2 for 2 pole switches Gen does not stop afterload Wait for Feature 2E time delay Starting control must be in the _ retransfer to normal source to time out automatic position Load Disconnect Active light Wait for load disconnect time Explanation Transfer switch in delayed transition transfer mode comes on delay to time out Load disconnect time delay is adjustable from 0 to 5 min 59 sec Load Disconnect Active light Check load disconnect time Explanation Transfer switch contacts are open longer than 5 stays on longer than 6 min delay setting Call ASI min 59 sec maximum setting Load remains disconnected These are factory settings Refer to Controller s User s Guide If the problem is isolated to circuits on the controller or the transfer switch call your local ASCO Power Technolog
10. 230 N 480 blank open type F 240 P 550 G 277 Q 575 H 380 R 600 Standard optional Controls Accessory amp Indicators Transfer Bypass Status Panel Group 5 Controller Bypass Handle Isolation Handle Transfer Switch inside SECTION 1 ASCO 7000 Series Automatic Delayed Transition Transfer amp Bypass Isolation Switches 7ADTBs are factory wired and tested Field installation requires mounting and connection of service cables and auxiliary control circuits if required Remove the Shipping Skid Open the front door and remove the four lag screws 2 in front 2 in rear securing enclosure to the shipping skid Supporting Foundation The supporting foundation for the enclosure must be level and straight Refer to the applicable enclosure outline drawing included with the switch for all mounting details including door opening space If bottom cable entry is used the foundation must be prepared so that the conduit stubs are located correctly Refer to the enclosure outline drawing for specified area and location Provide cable bending space and clearance to live metal parts When a concrete floor is poured use interlocking conduit spacer caps or a wood or metal template to maintain proper conduit alignment Mounting Refer to the applicable enclosure outline drawing fur nished with this switch and mount the automatic transfer switch according to details and instructions shown on diagram
11. ED Lower amber light should be on B RETURN TO AUTOMATIC OPERATION D OR REMOVE FF TRANSFER SHTON WAS BEEN LETE coment B REFER TO OPERATOR S MANAL tyrr P vr ROTATE SOLATION ne 5 ROTATE THE BYPASS HANDLE UNTI HANDLE TURNS GREEN TURN TOCONNECT 7 TURN TO ISOLATE position CONN S counterclockwise draws window Cre out the transfer switch Figure 3 12 Isolation Handle turned to ISOLATE BYPASSING amp ISOLATING continued 4 Open the lower enclosure door Pull out both left and right side rails then use the two tab handles to roll out the transfer switch It can be safely inspected in this position The transfer switch can also be removed for easier maintenance operations See Figure 3 13 A DANGER Hazardous voltage capable of causing electrical shock burns or death do not touch any control circuit terminals tab handles left rail right rail Figure 3 13 Transfer switch isolated and pulled out for inspection See page 2 2 for maintenance handle use A lifting yoke 812053 is available to facilitate lifting by using an overhead crane or similar equipment See WARNING The Transfer Switch weighs about 150 Ibs depending upon the number of poles Use lifting device 812053 or other device capable of lifting this weight to avoid personal injury or equipment damage Two persons are recommended Contact Inspection Contact condition should be checked annually Discol
12. T OF THE BYPASS HS DCAS wi ROUTE WIELE CLOCIINGE UTE BERGEY MOCATOR ABM Figure 3 6 Status light and window indicator for Bypassed to Normal Source To Bypass Emergency Source Load connected to Emergency Source The Transfer Switch Connected To Emergency light is on and Transfer Switch Connected To Normal light is off Turn the handle clockwise Turn the Bypass Handle clockwise until Bypass Switch Position shows closed on EMERGENCY yellow window indicator The red light Bypassed to Emergency will come on and the amber light Not In Automatic will flash Bypass Switch Turn Bypass Handle clock wise Figure 3 7 Bypass to Emergency diagram BYPASS SWITCH BYPASSED TO NORMAL Lower red light comes on BYPASSED TO EMERGENCY BYPASS Swit gt J GEWIN nh Upper window indicator g ik EMERGENCY shows yellow PUSH AND TURN TO CLOSE DLE x ae TEE PEF WOIT TO ERT OF ME SPAS ALE TUS ESN mE we ROUTE RARELE CLOCAINSE ATL BERGEY CATR ABE Figure 3 8 Status light and window indicator for Bypassed to Emergency Source The automatic transfer switch can now be put in the TEST or OPEN position See ISOLATING on page 3 3 NOTE When Accessory 40 B reversed Normal amp Emergency connections is specified the handle operation is reversed Follow instructions on the door 3 2 BYPASSING amp ISOLATING ISOLATING THE ATS Isolating is requ
13. ansfer Delay Bypass switch E Control counterclockwise to 2 Perform steps 1 5 at right Observe the status lights Retransfer Delay Bypass The See Figure 1 3 Transfer Switch Connected To Normal light should come on Transfer Switch Connected to Emergency light should go off E Black square means light is on 1 White square means light is off 3 Turn the Isolation Handle clockwise to the CONN connected position The engine generator will stop 5 after the Feature 2E time delay 4 Turn Bypass Handle clockwise to the OPEN position 5 unloaded running engine cool down The Emergency Source This completes the Functional Test of the 7ADTB Accepted light should go off SECTION 2 TESTING amp SERVICE TRANSFER TEST Test the Automatic Transfer Switch portion of the 7000 Series 7ADTB at least once a month This procedure checks the electrical operation of the Transfer Switch and Controller Put the engine generator starting control at the engine generator set in automatic mode In the following test the generator will start the load will be transferred to the Emergency source then back to the Normal source An interruption to the load will occur un less the the Transfer Switch contacts are bypassed before the test See pages 3 1 through 3 4 for bypassing amp iso lating instructions if no interruption of load is required Be sure to close the enclosure door before proceeding to
14. closing the isolation contacts until the ATS is in the same position as the Bypass Switch 4 Observe which Bypass Switch Position window indica tor is yellow VORMAL or EMERGENCY at the Bypass Switch Handle This indicates the source connected to the load 5 Observe which Transfer Switch Connected To light is on Normal or Emergency on the door This is the position of the Transfer Switch Ifitis notin the same position as the Bypass Handle change the position of the Transfer Switch as follows To change the position of transfer switch Operate to NORMAL Operate to EMERGENCY Turn Transfer Control switch to Retransfer Delay Bypass Turn Transfer Control switch to Transfer Test hold 15 seconds Connected To Normal light should come on Connected To Emergency light should comes on Tf Feature 2B time delay is used there will be a delay before transfer to Emergency NOTE With Normal available the automatic transfer switch will not stay in the emergency position unless Feature 3A time delay is used at least 30 seconds BYPASSING amp ISOLATING continued Do not close the isolation contacts unless the Transfer Switch ATS and Bypass Switch are in the same position 6 When the transfer switch is in the same position as the Bypass Switch handle continue turning the Isolation Handle clockwise about 8 turns until the window shows CONN connected Bypass Switch
15. ctions amp retighten them REPLACEMENT PARTS Replacement parts are available in kit form When or dering parts provide the Serial No Bill of Material No BOM and Catalog No from the transfer switch name plate Contact your local ASCO Power Technologies Sales Office or ASI In the United States call 1 800 800 ASCO 2726 In Canada call 1 888 234 ASCO 2726 DISCONNECTING THE CONTROLLER The harness disconnect plugs are furnished for repair purposes only and should not have to be unplugged If the controller must be isolated follow these steps A DANGER Bypass lsolation Switch is energized Do not touch isolation contact fingers shock burns or death could result Disconnecting the Plugs 1 Bypass and Isolate the Automatic Transfer Switch 2 Open the upper enclosure door 3 Separate the two quick disconnect plugs by squeez ing the latches Do not pull on the harness wires Reconnecting the Plugs 1 The ATS should be still bypassed and isolated 2 The two harness plugs and sockets are keyed Care fully align the plugs with the sockets and press straight in until the latches click 3 Close the enclosure doors 4 Follow Return to Service instructions on page 3 5 MANUAL LOAD TRANSFER This procedure manually transfers load to other source if the Transfer Switch or Controller are out of service Close enclosure doors to prevent personal injury in case of electrical s
16. ies sales office or ASI in the United States call 1 800 800 2726 or in Canada call 1 888 234 2726 Furnish the Serial No Catalog No and Bill of Material BOM No from the transfer switch nameplate MAINTENANCE HANDLE both upper and lower contact shafts Observe the A DANGER Bypass and isolate the Transfer Switch before window indicators right side Remove the mainte nance handle and store it on the lower left side using the maintenance handle See pages 3 1 through 3 4 Remove the maintenance emergency Conner handle after using it store it inside upper shaft 1 Bypass isolate and withdraw the transfer switch _window ponte pages 3 1 through 3 4 Then locate and remove the indicators sale maintenance handle from the clip inside lower left O is open fright side side Insert the handle onto the shaft on the left side C is closed of the operator of the transfer switch See Figures 2 1 2 2 2 3 and Table C Normal contacts lower shaft 2 Move the maintenance handle up or down as shown i CODOS Figure 2 1 Contact position indicators to manually operate the transfer switch Operate 2 2 TESTING amp SERVICE continued UP opens the Emergency source contacts UPPER SHAFT DOWN closes the Emergency source contacts shaft extension Figure 2 2 Maintenance handle operation for Emergency source contacts upper shaft handle P y UP closes the Vi Normal source lif con
17. ired before any service work can be performed on the automatic transfer switch ATS Refer to Figures 3 9 3 10 3 11 and 3 12 1 Bypass the closed automatic transfer switch contacts See BYPASSING on pages 3 1 and 3 2 2 Turnthe Isolation Handle counterclockwise approx 8 turns until window shows TEST The TS Test amber light should come on The ATS can be tested now without load interruption see page 2 1 Bypass Switch Turn crank counter clockwise until Cy window shows TEST Automatic Transfer Switch Figure 3 9 CONNECTED to TEST position Tts connecten __ TS TEST O TS ISOLATED Middle amber light should be on CONN position counterclockwise draws window Eo O out the transfer switch Figure 3 10 Isolation Handle turned to TEST continued NOTE In the TEST position the transfer switch solenoid operator circuit is energized through secondary disconnects A DANGER Hazardous voltage capable of causing electrical shock burns or death do not touch any control circuit terminals 3 Continue turning Isolation Handle counterclockwise approx 6 turns until the window shows ISOLATE The TS Isolated amber light should come on Bypass Switch Turn crank counter clockwise until window O shows ISOLATE Automatic Transfer Switch Figure 3 11 TEST to ISOLATE position O TS CONNECTED O TS TEST TS ISOLAT
18. itch as shown on the wiring diagram provided with the switch Make sure the lugs provided are suitable for use with the cables being installed Standard terminal lugs are solder less screw type and will accept the wire sizes listed on the drawings provided with the 7ADTB Be careful when stripping insulation from the cables avoid nicking or ringing the conductor Remove surface oxides from cables by cleaning with a wire brush When aluminum cable is used apply joint compound to conductors Tighten cable lugs to the torque specified on rating label Controller Ground A grounding wire must be connected to the controller s lower left mounting stud Because the controller is mounted on the enclosure door a conductive strap must be used between the enclosure and the door This connection provides proper grounding which does not rely upon the door hinges Harnesses The transfer switch is connected to the left side of the controller by a plug in harness two plugs INSTALLATION continued Engine Starting Contacts All customer connections including the engine control contact connections are located on terminal block TB which is mounted on the top right side of the enclosure Refer to the wiring diagram provided with the automatic transfer switch and connect the engine start wires to the appropriate terminals See Figure 1 1 and Table A Table A Engine start connections Terminals on Terminal Block TB When normal s
19. ol switch clockwise to Transfer 2 Electrical Operation Test until the engine starts This procedure checks electrical operation of the ADTS and runs within 15 sec The Emergency Source Accepted light should come on Close enclosure door before proceeding to prevent Transfer switch CN opens and personal injury in case of electrical system fault the Transfer Switch Connected D to Normal light should go off Transfer Test and the Load Disconnect Active The ATS should still be bypassed Both normal and light should come on Both CN amp CE contacts are now open emergency sources must be available and the emergency source generator if used must be capable of being After the delay transition time started put engine starting control in automatic position delay the CE Transfer switch will operate to the Emergency 3 position The Transfer Switch Connected To Emergency light should come on and Load Dis connect Active light goes off The Transfer Switch Connected to Normal light and the Normal Source Accepted light should be on 1 Turn the Isolation Handle counterclockwise to the TEST position Transfer switch will operate NOTE The engine generator may be signalled to start while back to Normal position after turning the Isolation Handle If emergency source is available Feature 3A time delay For im the ATS may operate to the emergency position If it does mediate retransfer turn Transfer operate Retr
20. oration is normal Do not file contacts because it wastes material Instead use light emery paper to clean up the contact surfaces The non replaceable main contacts are designed to last the life of the transfer switch A DANGER To prevent the possibility of fatal electrical shocks and burns bypass isolate and withdraw the transfer switch before working on it 1 Deenergize transfer switch pages 3 1 thru 3 4 Bypass isolate and withdraw transfer switch Use a voltmeter to verify that no electrical power is present at the transfer switch terminals Use the maintenance handle page 2 2 Open the contacts that will be inspected by using the detachable maintenance handle Remove the barrier Figure 3 14 Use a phillip screwdriver to loosen ccw four or six captive round head screws holding the barrier to the arc chutes Then pull the barrier straight outward to remove it Reinstall the barrier Install the barrier over the arc chutes Use a phillips screwdriver to tighten cw the four or six round head screws to secure the barrier to the arc chute insulator nuts See Figure 3 14 m sees ee a sa ee eee ARRI 7 aeneTaLl MS m Soon eee _ eee ee z ee peee s TEHES pme e a a x p TEA an
21. ource fails contact closes TB1 and TB2 contact opens TB1 and TB3 Note To temporarily disable engine control from the automatic transfer switch you can unplug J3 from the small P3 receptacle at the bottom of the assembly Be sure to reconnect plug J3 to the P3 receptacle for automatic transfer switch operation Auxiliary Circuits Connect auxiliary circuit wires to appropriate terminals on transfer switch terminal block TB as shown on the wiring diagram provided with this automatic transfer switch wy J i gt engine start X connections x on FIELD TERMINAL BLOCK customer terminal block TB Figure 1 1 Customer terminal block on the top right side of the enclosure Functional Test The Functional Test consists of two checks C 1 Voltage Checks page 1 3 2 Electrical Operation page 1 4 Do these checks in the order presented to avoid damaging the 7ADTB Read all instructions on the Wiring Diagram and labels affixed to the automatic transfer amp bypass isolation switch Note the control features that are provided and review their operation before proceeding Continue to 1 Voltage Checks on next page INSTALLATION continued ASCO 7o00 series Power Transfer amp Bypass Switch EMERSON Network Power Transfer Transfer Switch Transfer Switch Control Connected Connected To Emergency Retransfer Transfer Delay t f HALD FAS Y Bypas
22. prevent personal injury in case of electrical system fault Perform the five step Electrical Operation Transfer Test procedure on page 1 4 PREVENTIVE MAINTENANCE Reasonable care in preventive maintenance will insure high reliability and long life for the 7000 Series 7ADTB An annual preventive maintenance program is recom mended ASCO Services Inc ASI is ASCO Power Technologies s national service organization In the US ASI can be contacted at 1 800 800 2726 for in formation on preventive maintenance agreements Checklist for Yearly Inspection Hazardous voltage capable of causing shock burns or death is used in this switch Deenergize both Normal Emergency power sources before performing inspections Clean the 7ADTB enclosure Brush and vacuum away any excessive dust accumu lation Remove any moisture with a clean cloth Check the transfer switch contacts Bypass isolate and withdraw the transfer switch Then remove the transfer switch interphase barriers and check the condition of the contacts Replace con tacts when pitted or worn excessively Reinstall the interphase barriers carefully See page 3 4 Maintain transfer switch lubrication If switch is subjected to severe dust or abnormal operating conditions renew factory lubrication on all movements and linkages Relubricate solenoid operator if TS coil is replaced Don t use oil order lubrication kit 75 100 Check all cable conne
23. s s SCCONDG To _ Normal Emergency Source Source Accepted Accepted _ Figure 1 2 Standard controls and indicators observe these lights Functional Test Read all instructions on the Wiring Diagrams and labels affixed to the 7ADTB Note the control features that are provided and review their operation before proceeding After installing the 7ADTB check the following Bypass Handle should be in the NORMAL position Isolation Handle should be in the CONN position CN transfer switch should be C closed CE transfer switch should be O open If handles are not in correct positions follow instructions for Bypassing and Isolating the automatic transfer switch in Section 3 Do not force the handles Electrical interlocks prevent a wrong sequence of operation 1 Voltage Checks First check nameplate on transfer switch rated voltage must be the same as normal and emergency line voltages A DANGER Use extreme caution when using a meter to measure voltages Do not touch power terminals shock burns or death could result Perform steps 1 6 at the right Observe the status lights See Figure 1 2 M Black square means light is on 1 White square means light is off If necessary adjust voltage regulator on generator per the manufacturer s recommendations The 7ADTB will respond only to rated voltage specified on the nameplate Now continue to 2 Electrical Operation on next page Di
24. s follows select Normal or Emergency To Un Bypass Normal Source Load connected to Normal Source The Transfer Switch Connected To Normal light is on and Transfer Switch Connected To Emergency light is off Turn the handle clockwise Turn the Bypass Handle clockwise until the Bypass Switch Position shows OPEN green window indicator The Bypassed to Normal light should go off and the Not In Automatic light should go off Bypass Switch Turn Bypass Handle clockwise Figure 3 21 Un Bypass Normal diagram continued J Window indicator shows yellow when ATS is bypassed to Emergency SWIT HANDLE BYPASS WITCH POSITION Window indicator shows green when the ATS is not bypassed ORENCY Window indicator shows yellow when ATS is bypassed to Normal ATING abate aus 3 20 ya Handle and position indicators To Un Bypass Emergency Source Load connected to Emergency Source The Transfer Switch Connected To Emergency light is on and Transfer Switch Connected To Normal light is off Turn the handle counterclockwise Turn the Bypass Handle counterclockwise until the Bypass Switch Position shows OPEN green window indicator The Bypassed to Emergency light should go off and the Not In Automatic light should go off ere Bypass Switch Bypass Handle counter clockwise Figure 3 22 Un Bypass Emergency diagram
25. sconnect Active Close the normal source circuit breaker The Transfer Switch Connected To Normal and the Normal Source Accepted lights should come on Use an accurate voltmeter to check phase to phase and phase to neutral voltages pres ent at the transfer switch normal source terminals Close the emergency source circuit breaker Start generator if necessary The Transfer Switch Connected To Normal amp Emergency Source Accepted lights should come on Use an accurate voltmeter to check phase to phase and phase to neutral voltages pres ent at the transfer switch emer gency source terminals Use a phase rotation meter to check phase rotation of emer gency source it must be the same as the normal source Shut down the engine genera tor if applicable The Emergen cy Source Accepted light should go off Then put the starting control selector switch on the generator set in the automatic position Close enclosure door INSTALLATION continued A ASCO 7000 SERIES EMERSON Power Transfer amp Bypass Switch Network Power Transfer Transfer Switch Transfer Switch Control Connected Connected Retransfer Transfer arn Emergency Bypass 22 5705 GREEN j operate fi this switch observe Normal Emergency Source Source Disconnect th ese IQ hts Accepted Accepted Active _ Figure 1 3 Standard controls and indicators Turn and hold Transfer Contr
26. tacts LOWER SHAFT Ca DOWN opens the Normal source contacts shaft externsion Figure 2 3 Maintenance handle operation for Normal source contacts lower shaft Table C Maintenance handle positions ALL POWER MUST BE OFF Transfer Switch Position Interlocked Shafts Maintenance Handle Shaft Indicators shaft Up extension i M E 0 p Se upper contacts open Normal contact shafts F extension 4 lower contacts closed x S 7 E O E upper contacts open Load Disconnected N N O NA lower contacts open E C C upper contacts closed Emergency N 0 AA lower contacts open down Link between contact shafts prevents closing both N and E contacts The shaft extension and contact shaft turn in opposite directions through a cam follower mechanism If Normal and Emergency connectios are reversed this operation is also reversed 2 3 SECTION 3 BYPASSING amp ISOLATING TRANSFER BYPASS STATUS SOURCES NORMAL AVAILABLE O BYPASS SWITCH BYPASSED TO NORMAL O O EMERGENCY AVAILABLE O BYPASSED TO EMERGENCY O LOAD CONNECTED TRANSFER SWITCH CONNECTED TO NORMAL O TS CONNECTED i O TS TEST i O TS ISOLATED CONNECTED TO EMERGENCY NOT IN AUTOMATIC LAMP TEST ENGINE CONTROL Toi Figure 3 1 Status lights and Engine Control TRANSFER SWITCH Upper green light is on CONNECTED TO NORMAL if Transfer Swi
27. tch is on Normal Lower red light is on if Transfer Switch is on Emergency CONNECTED TO EMERGENCY Figure 3 2 Status lights for Transfer Switch main contact position Upper amber light n s connecten should be on tstest O TS ISOLATED Figure 3 3 Status lights for Transfer Switch isolation contact position BYPASSING THE ATS This procedure explains how to Bypass the closed transfer switch contacts Bypassing is required before the Transfer Switch can be tested or isolated The Bypass Switch Handle must be in the OPEN position green window indicator and the Isolation Handle must be in the CONN connected position window indicator The TS Connected light must be on See Figures 3 1 3 2 3 3 You can only bypass to the same source that the Transfer Switch is connected Solenoid interlock prevents incorrect operation 1 Observe which Transfer Switch Connected To light is on Normal or Emergency on the door This is the position of the transfer switch see Figure 3 2 Follow the directions on next page to Bypass to the same source as connected to transfer switch select Normal or Emergency J Window indicator shows yellow when ATS is bypassed to Emergency BYPASS SWITCH POSITION OPEN amp Window indicator shows green when the ATS is not bypassed Window indicator shows yellow when ATS is bypassed to Normal Figure 3
28. ystem fault 1 Bypass the connected ACTB source Turn Bypass Han dle to EMERGENCY or NORMAL see page 3 2 2 Isolate to Test Turn the Isolation Handle to TEST position see page 3 3 3 Turn the Bypass Handle to OPEN then to the other source see page 3 1 The load will be interrupted 4 Turn the Isolation Handle clockwise to the CONN connected position see page 3 4 TESTING amp SERVICE continued Note any optional accessories that may be furnished on Hazardous voltage capable of causing shock the 7ADTB and review their operation Refer to any burns or death is used in this switch separate drawings and or instructions that may be packed Do not touch the power or load terminals with the 7ADTB See Table B of the bypass switch or transfer switch Table B Trouble Shooting Checks CHECK IN NUMERICAL SEQUENCE ROEE 1 OPERATION 2 GEN SET 3 VOLTAGE Engine generator set does Hold Transfer Test switch 15 Starting control must be in the not start when the Transfer seconds or the outage must automatic position Batteries Control switch is turned and be long enough to allow for must be charged and held in Transfer Test position Feature 1C time delay plus connected Check wiring to or when normal source fails engine cranking and starting engine starting contacts Transfer switch does not Wait for Feature 2B time delay Generator output circuit Voltmeter should read
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