KE Relay User Manual (ke_relay_user_manual_01f)
Contents
1. Logic Function 3 hh mm Zeo 0 zj gt At StopTime Papa Zero 0 gt B 2 hh mm Zero t o gt C 1 E ouput o Output table 7 Read logics from relay Relay 2 Coil _ gt Transmit logics to relay comi Connected BERGHE Etc MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 22 of 30 6 7 Front end Statistics Screen NewElec KE Relay Frontend Rev 1f ARA Fie Options Disconnect Bootloader Recorder Test Event History Calculator Info Actual Settings ControlLogic RRealTimeClock Fault History Statistics User Defined Data Thermal Capacity required to start Drive Drive ID DemDrvKE Description of drive unit Demo KE relay Transmit data to relay Startup Counter 56 Trip Counter Bo Running Hours Counter 400 Update counters from relay Transmit settings to relay Power Consumption of Motor Apparent Power Consumption 689 kVAh Real Power Consumption 456 kWh Reset Counters in Relay COMI Connected a Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 23 of 30 6 8 Front end Calculator Screen NewElec KE Relay Frontend Rev 1c File Options Connect Bootloader Control Logic RealTime Clock Fault History Statistics Actual Settings Recorder Test Event History gt Thermal Calculator2. NewElec KE Relay Page 1 of 30 NE W LEC MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay User Manual Revision 1f 7th April 2010 NewElec Pretoria Pty Ltd Head Office Cnr 298 Soutter street amp Maltzan street Pretoria West South A frica 0182 GPS 25 45 12 S 28 09 46 E Http www newelec co za Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY 5 1 5 2 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 6 10 6 11 6 12 6 13 6 14 7 1 ie 7 3 7 4 Page 2 of 30 CONTENT ABSTRACT SPECIFICATIONS DEFINITIONS AND TERMINOLOGY FUNCTIONAL DESCRIPTION INSTALLATION INSTRUCTIONS Front end requirements Setup procedure of relay DIAGRAMS Physical layout of the KE relay Block diagram of the KE relay System diagram Wiring diagram Front end actual screen Front end settings screen Front end control logic screen Front end statisics screen Front end settings calculator screen Front end control test screen Manual amp Automatic Relay trip times Relay setting ranges and default settings FLED RDU MMI ACCESSORIES FLED IrDA interface MMI RDU Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 11 13 15 16 17 18 19 20 21 22 23 24 25 26 27 Ad 28 29 NewElec KE Relay Page 3 of 30 1 Abstract The KE Relay is an ISO9001 2000 compliant local designed and manufactured three phase motor protection relay It is a micro cont
3. Trip Time Calculation Cooling Time Calculation Motor load current Initial thermal capacity used fo Thermal curve class fio sec Required thermal capacity jo Thermal capacity used fo Thermal time constant ho sec Forced cooling Nv Calculate trip time 0 sec Calculate cooling time 0 sec Current Calculator Delta Connection Earth Leakage IDMT Calculator Full load power rating katt Actual leak current jo m Line voltage 400 Volt Leak current trip setting 250 m Power factor Time multipier 0 1 Effieciency Calculate current Calculate trip time jo sec Phase current 0 00 4 Line current 0 00 4 Full Load Motor Setting Calculator Thermal Curve Class Calculator Phase Current A Max current lock rotor Relay model v Max time lock rotor sec Calculate MLC 0 Calculate curve class a sec NE WV LEC MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 24 of 30 6 9 1 Front end Test Screen Manual Control NewElec KE Relay Frontend Rev 1d File Options Connect Bootloader Actual Settings Control Logic Real Time Clock FaultHistoy Statistics Recorder i st Event History Calculator Info Simulated Injection Test a Thermal Capacity Used 0 800 Ja Ja S 5 w o sey gt 700 100 gt 100 7
4. Connector Iso lockout amp Earth leakage 3 Serial Data Port RS232 PC 9 _ Relay healthy indication Fault indication light emitting diodes 5 Connector M T Relay Aux Relay Reset 11 Three phase power supply amp Aux power supply 110Vac 220Vac 6 Isolation lockout circuit Voltage converter 1050Vac MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 17 of 30 6 2 Block diagram of the KE Relay External Core Internal Current Balance Transformers Transformer Current Signal Conditioning Voltage Signal Circuits Conditioning Circuits Real Time Clock Analogue to Digital Reset Battery backed up Converters Switch Serial Ports RS232 Communication Data Processor PC Port Fault Indication LED Non Volatile Memory Relay Setting Fault records Main Trip Event records Relay Boot loader Program Code Relay 2 Volatile Memory Temporary data storage Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY Page 18 of 30 6 3 Wiring diagram of the KD KE Relay NewElec KE Relay 380 525 1050 VOLT SUPPLY 1050 Volt Convertor 400v 525v direct measurement 1050 Volt Inteface Module gt gt 2AMP Etec KD 10 Min Load Restart Timer 2 3 TRIP 1 RESET Insulation p Lock out interface NEWELEC 50 5 6 KLA 4 O so 37 28 ur r MLC amps Current amps UNBALANCE MINLOAD OVERLOAD RELAY HEALTHY E INSULATION EARTH ROTATION FAIL
5. Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 28 of 30 6 12 FLED Field Light Emitting Diode Display 6 13 RDU Remote Display Unit NESW MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 29 of 30 6 14 MMI Man Machine Interface NEw LEC artery raut RELAY comms KD MMI 420 CHARGING QIN SERVICE Omre 1 USB Memory Stick 2 Infra Red Link IrDA 3 Li Ion Battery charger 4 Fuse 1 Ampere slow blow 5 On Off Switch Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY 7 1 7 2 7 3 7 4 NewElec KE Relay Page 30 of 30 Accessories FLED Part number KD I2C FLED It is a field door mount display unit connected to the relay This unit relies on power supply from the relay and communicates via the I C bus with the relay The FLED display all the fault conditions similar to the front panel of the relay thermal capacity used 30 to 100 and last fault The FLED has three switches and is allocated as follows Reset switch Last fault Test switch The reset switch is similar to the reset switch on the front panel The last fault switch when pressed will replace the current fault indication with the last fault display When the motor is static and no real current is flowing the test switch will simulate a phase current injection of 600 The relay will respond as if it is a true over current condition and calcu
6. 2 Real Time Clock 24 Hour e Start time Hours and minutes configurable e Stop time Hours and minutes configurable 2 3 3 e Logic function 1 Logic function 2 and Logic function 3 e Three fully configurable inputs per logic function block Logic function blocks e Sum of product or product of sums operation 2 3 4 e Input Configurable Relay 2 Auxiliary Relay e Single set of potential free switch over contacts 2 4 Statistical Data Capturing 2 4 1 2 4 2 2 4 3 2 4 4 Start up counter Adjustable 0 to 65535 Trip counter Adjustable 0 to 65535 Running hours Adjustable 0 to 65535 hours Power consumption counters Resetable 0 to 65535 Apparent power consumption measured in kV A h Real power consumption measured in kWatt h NEW LEC MOTOR PROTECTION amp CONTROL TECHNOLOGY 2 5 2 5 1 2 5 2 2 6 2 6 1 2 6 2 2 6 3 2 7 2 7 1 21d 2 7 3 NewElec KE Relay Page 9 of 30 Trip Fault Recording Database capacity 60 last faults Trip fault record content Status Actual simulated Date Year month date Time Hour minute Fault description Run hours Max trip current Minimum trip voltage Breaker fault clearance time Event Recording Database capacity 2000 last events Event record content Status Actual Simulated Settings adjust Power up Calibration Date Year month date Alarm flags Trip flags Run hours Max trip current Min trip voltag
7. 0 un Stall Trip Level Trip Hold Off Delay to 10 seconds 0 Sec oltage Symmetry Trip Level 5 to 100 ine Voltage Selector 10 380 525 or 1000 V a c arth Leakage Curve Selection MT OR IDMT arth Leakage Trip Level 0 to 1000 mA arth Leakage Trip Delay 00 ms to 1 second 150 ms ermal Curve Class Selector to 40 seconds 15 seconds ermal Capacity Reset threshold 0 to 50 709 inimum Load Trip Level 0 to 100 inimum Load Start Up Trip Delay to 200 seconds 1 second inimum Load Run Time Trip Delay to 10 seconds 10 seconds tarts per hour allowed umber of consecutive starts allowed to 3 zX m Auto 250 mA ii foe g Sols i Se amp o lt eature Selection actory Preset vervoltage Disable ndervoltage Disable oltage Symmetry Disable oltage Phase Rotation Disable everse Voltage Phase Rotation BWR urrent Unbalance Disable hort Circuit Disable ingle Phasing Disable un Stall Disable ectorial Stall Disable requency Monitor Disable ail Safe Disable ow Pass filter Disable ynamic T Cap Reset Th adjust disabled tarts per hour disabled arth Leakage Dissable inimum Load Disable nder Current Selector ower Factor Selector Voltage Symmetry Disable NO Voltage Phase Rotation Disable NO Short Circuit Disable Yes Vectorial Stall Disable NO Frequency Monitor Disable es Dynamic T Cap Reset Th adjust disabled Yes __ _ Starts per hour disabled __ Pes Isolation Lockout Disable es Under Current Selector es
8. 0 50 50 10 240 235 235 230 70 5 50 60 5 Save simulation data file Open simulation data file Run Simmulation Control in Senice Manual step sequence a mm d lt S Reset Trip Condition Start Simulation Bom EF J H Reset Thermal Capacity Please note The sole purpose of this simulation facility is to pro ee vide a quick test for some of the protection features Timer Alarm to Trip Time of the relay It is not suitable for calibration purposes Reset DT sek due to processing speed variances of the different k personal and laptop computers NESW LEC MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 26 of 30 6 10 Relay Trip Times KD amp KE Relay KD Relay Thermal Curves Class 1 Class 5 Class 10 Class 15 Class 20 Class 25 Class 30 Class 35 Class 40 w ke c fe fz D a 2 o 5 gt s 2 i 4 6 Multipiles of Full Load Current LEC MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 27 of 30 6 11 Relay setting ranges and default settings Settings Factory Parameter Range Default nbalance Current Trip Level to 50 159 nbalance Current Trip Delay to 10 seconds 10 seconds un Stall Trip Level 10 to 300 fl 30
9. 100 3000 DD oOo n o O y a l n N a a o G se a peer prernnpernrnny o o n n o ol Nm on CRU OU Us M o oOo BU N o O LJ o a l m a 2 a o oO Heuepeeeopeeeepoeerpeeenpeeenges O a N Q 2 o Y white a o p 0 Max Phase Unbalance Frequency Power Earth j ig Current Curent Hz Factor Leak m Link voltage slider controls 0 o o0 E 0 Simmulation Control gt Auto step sequence Pa Reset Trip Condition Start Simulation len EN J 5 Reset Thermal Capacity Please note L3 l E l L e a The sole purpose of this simulation facility is to pro vide a quick test for some of the protection features Timer Alarm to Trip Time of the relay It is not suitable for calibration purposes due to processing speed variances of the different personal and laptop computers Etc MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 25 of 30 6 9 2 Front end Test Screen Automatic Control NewElec KE Relay Frontend Rev 1d TB Fie Options Connect Bootloader Actual Settings Control Logic RealTime Clock FaultHistory Statistics Recorder Test Event History Calculator Info Simulated Injection Test Thermal Capacity Used 0 Automatic Simulated Injection Step Sequence T able 60 1
10. NewElec KE Relay Page 13 of 30 Functional Description The KE relay is controlled by a micro controller The three phase currents voltages and earth leakage current are detected by current transformers attenuator circuits and a core balance current transformer respectively The current and voltage signals are conditioned by appropriate analogue circuits and converted to 0 to 5 volt analogue signals The analogue signals are digitized to 10 bit resolution The micro controller has non volatile and volatile memory The non volatile memory contains a boot loader program which is used to upload the operating software program of the relay The uploading is done from a personal computer or laptop via the RS232 port This feature also enables the user to do future software upgrades without factory assistance Front end software is included that runs on MS Windows The RS232 port is used as the communication port The purpose of the front end is to configure and select the required functionally of a specific application The setup adjustments required at the installation phase will be discussed in the next chapter dealing with installation instructions The relay will monitor the parameters of the motor for the duration of auxiliary power supply The auxiliary power supply is selectable 110Vac or 230Vac When a trip condition occurs the main trip relay is activated It will be energized or de energized non fail save or fail save respectively de
11. URE LEAKAGE E Le 3 PHASE MOTOR KD MOTOR PROTECTION RELAY NEM LEC MOTOR PROTECTION amp CONTROL TECHNOLOGY RESTART RELAY REMOTE 220 Vac 110 Vac Neutral NEWELEC C B C T KD ECD CDR NewElec KE Relay Page 19 of 30 6 4 Front end Actual Screen NewElec KE Relay Frontend Rev 1f DER Fie Options Disconnect Bootloader Recorder Test Event History Calculator Info Actual Settings Control Logic Real Time Clock Fault History Statistics Drive ID EM_AB123 Drive Description Pump Stattion AB123 In Service Motor Running ea Phase Voltages Present jar Thermal Capacity Used t Thermal Curve Class Setting Thermal Trip Time Remainder oO O Line Voltage Selection Auto W Actual Current Level x Line Voltage max 398 y b Actual Phase Current Level Supply Frequency t Actual Current Unbalance Power Factor Phase Voltage red Level Phase Voltage white Level Running Hours Main Trip p Relay i Date 2010 05 06 Time 15h55m29s CE Phase Voltage blue Level Voltage Symmetry z X Apparent Power Dissipation Real Power Dissipation att pun adeaslslel ale Bz Software Reyle Model KE 5 Serial Nr 01234567 EM 100 5 v Alarm and Trip Flags gt m Relay Trip f Thermal Capacity 3 Reset Earth Leakage Current Overcurrent Vectorial Run Stall Current Unbalance Single Ph
12. Voltage Phase Rotation Disable Single Phasing Disable I V Phase Rotation Reversed BWR I Run Stall Disable I Frequency Monitor Disable Vectorial Stall Disable J I Minimum Load Disable V Undercurrent Select Auto Thermal Reset Select m E Moving Average Filter Disable F Dynamic TCap Reset TH Adj Disable Write settings and logics to disk file I Starts per Hour Disable Read settings and logics from disk file Earth Leakage Disable F Isolation Lockout Disable Rix settings from Rela Tx settings to relay comi Connected BTTTGGG F Fail Save Disable Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY 6 6 NewElec KE Relay Page 21 of 30 Front end Control Logic Screen NewElec KE Relay Frontend Rey 1c File Options Disconnect Bootloader Recorder Test Event History Calculator Actual Settings Control Logic Real Time Clock FaultHistory Statistics r Control Logic Functions Timer Logic Function 1 Zero t0 v gt Start input Zeo t0 v gt Aw Zeo 0 z gt Reset input Zeo 0 v gt B 2 W 0 Timetsec Zeo 0 v cM fo Output table a M Timer B Zeo o v gt Start input Logic Function 2 __ Zero 0 gt Reset input Zero t o gt 4 W 0 Time sec Zeo 0 gt BI2 Zero 0 gt C 1 Real Time Clock fo Output table Bi o mao z Start Time jo 2 p 2
13. asing Minimum Load Low Frequency High Frequency Phase Rotation Error Short Circuit Overvoltage Undervoltage Voltage Symmetry Isolation Lockout Earth Leakage Earth Fault Starts per Hour Limit L ICOM2 Connected i i Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 20 of 30 6 5 Front end Settings Screen NewElec KE Relay Frontend Rev 1c File Options Disconnect Bootloader Recorder Test Event History Calculator Info Actual Settings Control Logice RealTime Clock FaultHistoy Statistics Parameter Settings and Feature Selection Unbalance Current Trip Level io Motor Full Load Setting hos Unbalance Current Trip Delay io sec Thermal Curve Class Selector b sec Thermal Capacity Used o i Thermal Cap Reset Threshold 0 Min Load Restart Delay f O min x Min Load Current Trip Level fo Min Load Pwr Fac Trip Level fo Instantanious Definite Time Min Load Startup Trip Delay jo sec Min Load Runtime Trip Delay jo sec Earth Leakage Trip Level jo m Earth Leakage Trip Delay f100 ms Run Stall Trip Level jo Run Stall Trip Holdoff Delay fo sec Voltage Symmetry Trip Level fo Line Yoltage Selector y Starts per hour allowed fo Number of consecutive starts fi F Undervoltage Disabl F Current Unbalance Disable Voltage Symmetry Disable Short Circuit Disable F
14. e Breaker fault clearance time Down load control Last events 1 to 2000 selectable for down load Front end will creates a spread sheet type of file Can be viewed by MS Excel or equivalent software Physical dimensions Size of foot print 100mm x 60mm DIN Rail mount screw fix mount Length 150 mm Mass 425 gram Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY 2 9 2 9 1 2 9 2 NewElec KE Relay Page 10 of 30 Auxiliary power supply Voltage requirements 110 Vac 10 or 230 Vac 10 Power requirements 2 2 Watt Operating environment Temperature 0 50 Celsius Relative humidity lt 85 Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 11 of 30 3 Definitions and Terminology Apparent power consumption Apparent power dissipation Breaker clearance time Consecutive starts Core balance current transformer Earth fault Earth leakage fault Full load current IDMT In Service Isolation lockout Insulation failure Motor full load setting MLC Non volatile memo Over current Overload Phase rotation Power factor dissipation consumption Real power dissipation The amount of energy consumed over a period of one hour It is expressed in kV A h Line voltage and phase current It is the product of line voltage and phase current expressed in kVA It is the time taken by the breaker to clear the fault by interrupting the supp
15. eal time clock is running from a super capacitor which is continuously charged by the auxiliary power supply The real time clock should be able to run for another 5 days if the auxiliary supply went down The real time clock provides time and date for record keeping and also participates in the control functions The main trip relay has a dedicated function and is exclusively used for protec tion Relay 2 is configurable and is available to participate in the control func tions Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY 5 1 5 2 NewElec KE Relay Page 15 of 30 Installation Instructions Front end requirements A Pentium personal computer or laptop is required to setup the KE relay The computer must be equipped with a RS232 port If only USB ports are available an USB to RS232 converter should be used The operating system software requirement is MS Windows 2000 MS Windows XP or later versions The front end software is free but remains the property of NewElec Pty Ltd It is supplied with the purchase of new relays Setup procedure of the relay Once the wiring has been done and checked by qualified personnel the relay is ready to be configured The two most important front end screens is the settings diagram 6 4 and control logic screen diagram 6 5 These two screens enable the user to set parameters select protection functions and determine control strategy These two screens are also linked and when settings a
16. late thermal capacity usage An overload trip will result if all the thermal capacity is used IrDA interface Part number IRDA KD This an infra red link that can be used in an intrinsic safe environment where isolation is required between the relay and external devices like remote display units RDU man machine interface units MMT laptops etc Remote Display Unit RDU Part number KD RDU 420 It is a display unit with a 4 x 20 character LCD display and a simplified keyboard The RDU can perform about 80 of the setup and display functions of the front end software Man Machine Interface MMI Part number KD MMI 420 EP It is similar to the RDU The unit is packed into a plastic toolbox with it s own battery power supply The unit is designed for mobility and to be functional in intrinsic safe environments 00000 Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY
17. ly current to the motor It can be seen as breaker response time and is useful information for breaker maintenance The amount of starts allowed during a time interval created by the starts per hour setting See also starts per hour A current transformer used to detected possible current leakage to earth from one or more of the phases Earth leakage detection It is leakage current above 2 amps and a severe form of an earth leakage condition See also core balance current transformer It is leakage current up to 2 amps exceeding a trip level setting See also core balance current transformer Current drawn by the motor at full load operation 90 to 100 time selection Phase current above 10 of full load current The insulation resistance of the motor is measured while in a static not in service condition If the resistance drops below 20 kOhm the relay will trip and will prevent a start Adjustment of the relay current sensitivity This is where the current level measurement is adjusted to read just below 100 when the motor operates at full load It is memory that will maintain data even when power is switched off for long periods see also volatile memory Current level above 100 of full load current Normal phase rotation is Red white and blue Reverse rotation is blue white and red It is die relationship between real power and apparent power Power factor V x I x Cos V x D x 100 Power factor Cos I
18. nts Current e Three phase current e Range 1 Amp to 50 Amps e Models KE1 1 Amp KE5 5 Amp KE25 25Amp and KE50 50 Amp e Dynamic range 0 to 1000 e Expanded models KE100 100Amp KE200 200Amp and KE400 400Amp will make use of 100 5 200 5 and 400 5 CTs respectively Voltage e Range 110V 400V 525V and 1050V For 1050V an additional attenuator circuit is required e Range selection Manual or Automatic selection at power up 1050V is only manual selectable Frequency e Range 30Hz to 100Hz Power Factor e Range 0 to 100 leading lagging Power Dissipation e Type Apparent power and real power calculated from measured voltage and current values only displayed on front end e Range 0 to 420 kVA kWatt e Resolution Steps of 100 VA Watt Earth Leakage e Range 30mA to 3 Amps e Trip time delay Inverse Definite Minimum Time IDMT Instantaneous Definite Time IDT Real Time Clock e 24 hour clock Year month date hours and minutes e Battery backup 5 days by a 1 Farad super capacitor e Time and date stamping Fault and event records Breaker Fault Clearance Time e Measurement range 10 ms to 1000ms Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY 2 2 2 2 1 2 2 2 2 2 3 2 2 4 2 2 5 NewElec KE Relay Page 5 of 30 e Resolution 10ms Insulation Resistance e Measurement range 1 to 199 kOhm e Resolution 1 kOhm steps Protection Features All rese
19. pending on what mode of operation that was selected A time and date stamped trip record is also generated and saved in non volatile memory for later retrieval Memory space for 60 trip records is allocated The layout of the trip record is discussed in chapter 2 specifications Event records are also time and date stamped It is more comprehensive and saved in non volatile memory Only read access rights is given to the user This information could be used in the event of insurance claims and liability cases The layout of the event record is discussed in chapter 2 specifications Six fault indication light emitting diodes red are placed on the front panel The green light emitting diode will come on only if the relay is in a healthy state A healthy state signifies that the motor could be static or in operation within it s save operating parameters The fault indications are displayed on the front panel as follows Name of Fault Indication LED used MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 14 of 30 The reset button is used to acknowledge and reset trip faults A reset will only take affect if sufficient thermal capacity is regained during the cooling period and no phase current flows If the reset button is pressed during the cooling cycle the Overload LED will start flashing 1 second on 1 second off to signify cooling Once the required thermal capacity level is reached the relay will reset The r
20. re saved to disk or retrieved from disk When setting changes are made it has to be transmitted to the relay to become effective Changes on the control logic screen can only be made when off line is selected When on line is selected again the settings are transmitted to the relay Relays are shipped to the user with a set of default settings and may be appropriate in some cases To determine the full load current setting the motor has to be started and allowed to run at full load capacity Use the front end software and go to settings Select a MLC value motor full load setting that will allow a load current level of 90 to 95 The minimum load setting adjustment motor run with no load is done in a similar way The option is provided to use a current trip level or a power factor trip level Motors with no load tend to run at a lower load current and a lower power factor Power factor is in most cases more desirable due to better sensitivity Hint MLC and Curve Class settings could also be calculated with the calculator The real time clock should be checked and adjusted to the correct time setting The fault history can also be erased to start afresh Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 16 of 30 6 Diagrams 6 1 Physical layout of the KE Relay 2 Internal integrated current transformers 8
21. roller based precision instrument with protection and control logic functions The relay is designed for the low voltage motor protection market and is available in different current models The current transformers are internal and integrated into the relay while the core balance current transformer is external External current transformers are used to extend the range from 100 to 400A The relay is fully configurable with the aid of front end software or a man machine interface unit MMI Event records can also be down loaded with the MMI onto a memory stick for further analysis All the settings are password protected The relay has an on board database where time and date stamped records are kept Two types of records are kept namely fault records 60 last faults and event records 2000 events In the case of event records the user has limited access rights read only The front end also has a data recorder which could be used to analyze motor performance The relay detects earth leakage currents with the aid of the external core balance current transformer and is configurable to operate in inverse definite minimum time IDMT or instantaneous definite time IDT mode A unique feature is added to the relay in the form of simulation This function could be used for personnel training or relay functionality testing Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY 2 2 1 NewElec KE Relay Page 4 of 30 Specifications Measureme
22. t is the difference between apparent power dissipation and real power dissipation It could be seen as power lost Same as apparent power consumption but with power factor taken into account It is the product of line voltage phase current and power factor expressed in kWatt MOTOR PROTECTION amp CONTROL TECHNOLOGY NewElec KE Relay Page 12 of 30 Run Stall The motor went through the normal start procedure and the current level return to normal full level If the rotor jam and the current rise above the stall setting 110 to 300 then it is recognized as a Run Stall fault condition of starts are allowed See also consecutive starts Thermal capacity It is a temperature related quantity expressed in percentage which also takes in consideration the physical size mass construction type of material used etc of the motor It is normally indicated as capacity used unless otherwise stated Minimum load acceptable threshold Vectorial Stall It is detected during the start up procedure of the motor A motor normally start up with a bad power factor and gradually improve it as full speed is approached If no power factor improvement is detected for longer then 33 of the curve class time the motor is tripped to prevent thermal and mechanical damage Volatile memory It is memory that will loose data during a power supply interrup tion see also non volatile memory Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY
23. taneous Definite Time 100 ms gt t gt 1000 ms 50 ms steps Inverse Define Minimum Time t gt 130 ms Harmonic filtering suitable for variable speed drives and soft starters Trip level Adjustable Feature selectable Reset Manual Earth Fault Detection Ir 22A Harmonic filtering suitable for variable speed drives and soft starters Trip delay time 1 second fixed Trip level 2A fixed Feature selectable Reset Manual Control logic e Configurable inputs can be connected with signals listed in the table below Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY Page 8 of 30 NewElec KE Relay Zero 0 One 1 InService VoltPresentF OverCrnt_af ShortCirc_af RunStall_ af _ Unbal_af SinglePhase_af EarthFault_af EarthLeak_af MinLoad_af OverVolt_af UnderVolt_af VoltSym_af HiFreq_af LoFreq_af IsoLockOut_af OverCrnt_tf ShortCirc_tf RunStall_tf _ Unbal_tf SinglePhase_tf EarthFault_tf EarthLeak_tf MinLoac_tf OverVolt_tf UnderVolt_tf VoltSym_tf HiFreq_tf LoFreq_tf IsoLockOut_tf PhaseRot_tf StartsPerHr_tf Timer_A Timer_A Timer_B Timer_B RTClock RTClock LogicFunc_1 LogicFunc_1 LogicFunc_2 LogicFunc_2 LogicFunc_3 LogicFunc_3 Restart FrozenContact PLC_Inp_0 PLC_Inp_1 TCap gt Thold 2 3 1 Timer A and Timer B Timers Start input Configurable e e Time setting 0 to 50 minutes e e Reset Inhibit input Configurable 2 3
24. ts are subjected to sufficient thermal capacity gain Over Current Overload Detection Curve class settings 3 to 40 seconds IEC 60255 8 specification Motor full load setting MLC 10 to 100 on front panel Reset Manual or three automatic resets per hour when selected Reset threshold setting Fixed at 70 thermal capacity or dynamic threshold adjustment determined over 10 last restarts Undercurrent Minimum load Detection Trip level adjustment 10 to 100 on front panel Selection Current level or power factor Trip delay time 1 to 10 seconds Start up delay 1 to 200 seconds To facilitate pump priming Reset time Manual or 10 seconds to 6 hours 9 steps Feature selectable Unbalance Phase Currents Detection Trip level adjustment 0 to 50 Trip delay time 1 to 10 seconds Feature selectable Reset Manual Single Phasing Phase lost Detection e Trip delay time 1 second fixed e Feature selectable e Reset Manual Run Stall Detection e Stall current trip level adjustment 110 to 300 e Stall trip delay time 0 to 120 seconds adjustable e Feature selectable Etec MOTOR PROTECTION amp CONTROL TECHNOLOGY 2 2 6 2 2 7 2 2 8 2 2 9 2 2 10 2 2 11 2 2 12 NewElec KE Relay Page 6 of 30 e Reset Manual Vectorial Stall Detection Trip Static or decreasing power factor Trip delay 33 of curve class setting Feature selectable Reset Manual Starts per Hour Control Starts se
25. tting 1 to 30 starts adjustable Consecutive starts 1 to 3 starts per interval adjustable Feature selectable Reset Automatic Short Circuit Detection e Articulated detection If Loan gt 950 and Power factor lt 85 or Loan gt 300 and Power factor gt 85 e Trip delay time 1 second fixed e Reset Manual Voltage Symmetry Detection Trip delay time 10 seconds fixed Trip level adjustment 70 to 100 Feature selectable Reset Manual Over Voltage Detection Trip delay time 10 seconds fixed Trip level Factory settings Feature selectable Reset Manual Under Voltage Detection Trip delay time 10 seconds fixed Trip level Factory settings Feature selectable Reset Manual High or Low Frequency Detection e Trip delay time 10 seconds fixed e Trip level Factory settings 45Hz to 55Hz e Feature selectable Ecec MOTOR PROTECTION amp CONTROL TECHNOLOGY 2 2 13 2 2 14 2 2 15 2 2 16 2 3 NewElec KE Relay Page 7 of 30 e Reset Manual Voltage Phase Rotation e No trip delay time e Auto reset once fault is fixed e Feature selectable forward reverse none Insulation Failure Detection Detection Only in static state motor not running Trip delay time 1 second fixed Trip level Resistance lt 20 kOhm fixed Feature selectable Reset Manual Earth Leakage Detection In lt 2A e Selection between Instantaneous Definite Time or Inverse Definite Minimum Time Instan
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