GE MULTILIN 269 MOTOR MANAGEMENT RELAY Series, Instruction Manual

Page 1: ...al CANADA 215 Anderson Avenue Markham Ont L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 Internet http www ge com edc pm 269 MOTOR MANAGEMENT RELAY Firmware Rev 269P D6 0 4 Manual P N 1601 0013 D3 Copyright 1999 GE Multilin ...

Page 2: ...rrent Setpoints 3 49 3 13 Rapid Trip Mechanical Jam Setpoints 3 49 3 14 Short Circuit Setpoints 3 50 3 15 Immediate Overload Alarm Level Setpoint 3 50 3 16 Stator RTD Setpoints 3 50 3 17 Other RTD Setpoints 3 51 3 18 Overload Curve Setpoints 3 51 3 19 Thermal Capacity Alarm 3 55 3 20 Thermal Memory 3 55 3 21 Emergency Restart 3 56 3 22 Resetting The 269 Relay 3 57 3 23 269 Relay Self Test 3 57 3 2...

Page 3: ...TABLE OF CONTENTS ii GLOSSARY ...

Page 4: ...trial motors and their associated mechanical systems The 269 offers a wide range of protection monitoring and diagnostic features in a single integrated package All of the relay setpoints may be programmed in the field using a simple 12 position keypad and 48 character alphanumeric display A built in HELP function can instruct the user on the proper function of each of the programming keys and on ...

Page 5: ... main trip relay One alarm relay Two auxiliary relays Emergency restart capability Pre trip alarm warnings 4 20mA output of motor current as a percentage of full load motor thermal capacity hottest stator RTD tem perature percentage of phase CT secondary current or bearing RTD Statistical and Memory Features Recall of all pre trip motor values Tamperproof setpoints stored in non volatile memory Mi...

Page 6: ... as these options are not selectable in the field Additional features can be made available on special order by contacting the GE Multilin factory See Glossary for definitions CT information failsafe code and contact ar rangement must be specified for drawout relays only on standard 269 s these features are field selectable 1 4 Order Code Information ...

Page 7: ...ST setpoints 20 45ms 2 Ground Fault 0 5 Second delay 150 msec 3 Ground Fault 250 msec delay 75 msec 150 msec 4 Metering setpoints Page 7 1 5sec or 2 of total time Differential Relay Input relay response time 100 msec maximum contact closure to output relay activation RTD Inputs sensor types 10 OHM copper 100 OHM nickel 120 OHM nickel 100 OHM platinum specified with order display accuracy 2 C trip ...

Page 8: ...n Upon completion of Hi Pot tests the jumper should be placed in the GND position See Fig 4 3 Type Tests Dielectric Strength 2 0 kV for 1 minute to relays CTs power supply Insulation Resistance IEC255 5 500Vdc Transients ANSI C37 90 1 Oscillatory 2 5kV 1MHz ANSI C37 90 1 Fast Rise 5kV 10ns Ontario Hydro A 28M 82 IEC255 4 Impulse High Frequency Disturbance Class III Level Impulse Test IEC 255 5 0 5...

Page 9: ...65 VAC 50 60 Hz Power nominal 10VA maximum 20VA Holdup 100 ms typical 120 VAC 125 VDC TYPE TESTS Dielectric strength 2 0 kV for 1 minute to relays CTs VTs power supply Insulation resistance IEC255 5 500Vdc Transients ANSI C37 90 1 Oscillatory 2 5kV 1MHz ANSI C37 90 1 Fast Rise 5kV 10ns Ontario Hydro A 28M 82 IEC255 4 Impulse High Frequency Disturbance Class III Level Impulse test IEC 255 5 0 5 Jou...

Page 10: ...ront panel The physical dimensions of the 269 unit are given in Figure 2 1 GE Multilin also provides phase and ground fault CTs if required Dimensions for these are shown in Figure 2 2a Figure 2 2b Figure 2 2c and Figure 2 2d Note Dimensions of a are for 100 5 to 1000 5 phase CT s for the dimensions of 50 5 and 75 5 CT s consult factory Figure 2 1 Physical Dimensions ...

Page 11: ...2 INSTALLATION 2 2 Figure 2 2a Phase CT Dimensions ...

Page 12: ...2 INSTALLATION 2 3 Figure 2 2b Ground CT 50 0 025 3 and 5 window ...

Page 13: ...2 INSTALLATION 2 4 Figure 2 2c Ground CT 50 0 025 8 window ...

Page 14: ...2 INSTALLATION 2 5 Figure 2 2d Ground CT x 5 Dimensions ...

Page 15: ...or sources of strong magnetic fields Connections to the relay are made through terminal blocks and CTs located on the rear of the unit 2 3 External Connections The connections made to the 269 relay will vary depending on the programming of the unit It is not necessary to use all of the connections provided a minimal configuration would include supply power three phase current CT inputs and the Tri...

Page 16: ...ete list of all possible output relay contact states See SETPOINTS page 5 for a description of the RELAY FAILSAFE CODE Table 2 1 269 External Connections Inputs Supply Power L G N universal AC DC supply Phase CTs Ground Fault CTs core balance CT 6 Stator RTDs 2 additional RTDs Emergency Restart keyswitch External Reset pushbutton Programming Access jumper or keyswitch Meter Communication Port Outp...

Page 17: ...2 INSTALLATION 2 8 Figure 2 4 Relay Wiring Diagram AC Control Power ...

Page 18: ...elay contact programmed failsafe may change state Therefore in any application where the process is more critical than the motor it is recommended that the trip relay contacts be programmed non failsafe In this case it is also recommended that the AUX2 contacts be monitored for relay failure If however the motor is more critical than the process then the trip contacts should be programmed failsafe...

Page 19: ...2 INSTALLATION 2 10 Figure 2 6 Relay Wiring Diagram Two Phase CTs ...

Page 20: ...2 INSTALLATION 2 11 Figure 2 7 Relay Wiring Diagram DC Control Power ...

Page 21: ... back to the source through filter ground The filter ground is separated from the safety ground terminal 42 at jumper J201 on the back of the relay to allow dielectric testing of a switchgear with a 269 wired up Jumper J201 must be removed during dielectric testing It must be put back in place once the dielectric testing is done When properly installed the 269 will meet the interference immunity r...

Page 22: ...A P P L Y T O 2 6 9 2 6 9P l u s D R A W O U T V E R S I O N S C A U T IO N T H IS P R O C E D U R E A P P L IE S T O 2 6 9 2 6 9 P lu s R E L A Y S W IT H R E V IS IO N C O N L Y C R E V IS I O N C U N I T S E X A M P LE S E R IA L N O C 5 2 6 13 9 2 1 2 2C A U T IO N N O T E S P R O C E D U R E R E M O V IN G F U S E R E P L A C I N G F U S E 4 IN T E C H N I C A L S P E C IF IC AT I O N S U S E...

Page 23: ...2 INSTALLATION 2 14 Figure 2 9a Core Balance Ground CT Installation using Shielded Cable Figure 2 9b Core Balance Ground CT Installation using Unshielded Cable SHIELDED CABLE UNSHIELDED CABLE ...

Page 24: ... a 5A secondary CT The 269 must also be programmed for a 5A secondary ground CT with the primary being equal to the phase CT primary This is done in SETPOINTS page 1 2 7 Trip Relay Contacts The main control relay or shunt trip coil of the motor starter or circuit breaker should be connected to the Trip relay contacts of the 269 These contacts are available as normally open NO normally closed NC an...

Page 25: ...contacts is available and the user must specify normally open or normally closed and failsafe or non failsafe when ordering This auxiliary relay has the same ratings as the Trip relay Auxiliary relay 1 can be configured as latched or unlatched and fail safe or non fail safe The conditions that will activate this relay can be any trip or alarm indications see section 3 4 for factory preset configur...

Page 26: ... keep the lead resistance as low as possible If RTD 8 is to be used for ambient air temperature measurement the RTD should be placed and mounted somewhere in the motor cooling air intake flow The sensor should be in direct contact with the cooling air but not with any surface that is at a temperature other than the cooling air This RTD is selected for ambient temperature use in page 5 of SETPOINTS...

Page 27: ...mperature as a percentage of 200 C or CT secondary current as a percentage of CT secondary amps rating The choice of output is selected in page 5 of SETPOINTS mode This selection can be made or changed at any time without affecting the protective features of the relay The output current range is factory default at 4 20 mA However this range may be enlarged in page 5 of SETPOINTS mode 4 mA output c...

Page 28: ...lastic 269 case to the drawout cradle These screw into holes which are slotted to compensate for panel thickness If the 269 case is mounted at the extreme end of the slot intended for thin panels the relay will not seat properly and the door will not shut over the relay when installed on a thick panel Loosening the screws and moving the relay forward before retightening will fix the problem RELAY ...

Page 29: ...2 INSTALLATION 2 20 Figure 2 11 269 Drawout Relay Physical Dimensions ...

Page 30: ...2 INSTALLATION 2 21 Figure 2 12 269 Drawout Relay Mounting ...

Page 31: ...2 INSTALLATION 2 22 Figure 2 13 269 Drawout Relay Typical Wiring Diagram ...

Page 32: ...entification label on the back of the MPM that the control voltage matches the intended application Connect the control voltage input to a stable source of supply for reliable operation A 2 amp fuse is accessible from the back of the MPM by sliding back the fuse access door Using 8 gauge wire or ground braid connect terminals 5 6 to a solid system ground which is typically a copper bus in the swit...

Page 33: ...e following information to the 269 1 Echo Protocol Revision 2 Vab Vbc Vca or Van Vbn Vcn depending on whether the VTs are connected phase to phase or phase to neutral 3 Average Voltage 4 kW 5 kvar 6 Frequency 7 Voltage Phase Reversal Status 8 VT Wiring Configuration open delta or 2 input wye 9 kW sign 10 kvar sign 11 Meter Revision 12 Power Factor 13 Power Factor sign indication Lead Lag 14 MWh 15...

Page 34: ...2 INSTALLATION 2 25 Figure 2 16 MPM Mounting Dimensions ...

Page 35: ...2 INSTALLATION 2 26 Figure 2 17 MPM to 269 Typical Wiring 4 wire Wye 3 VTs ...

Page 36: ...2 INSTALLATION 2 27 Figure 2 18 MPM to 269 Typical Wiring 4 wire Wye 2 VTs ...

Page 37: ...2 INSTALLATION 2 28 Figure 2 19 MPM to 269 Typical Wiring 3 wire Delta 2 VTs ...

Page 38: ...2 INSTALLATION 2 29 Figure 2 20 MPM to 269 Typical Wiring 2 CT ...

Page 39: ...2 INSTALLATION 2 30 Figure 2 21 MPM Wiring Open Delta ...

Page 40: ...3 SETUP AND USE 3 1 Figure 3 1 Front Panel Controls and Indicators ...

Page 41: ...OF DATA PAGES OF DATA will be displayed for 2 seconds The beginning of page 1 of ACTUAL VALUES mode will then be dhown PAGE 1 ACTUAL VALUES PAGE 1 ACTUAL VALUES PHASE CURRENT DATA PHASE CURRENT DATA USE This key can be pressed at any time in any mode to view actual motor val ues To go from page to page the PAGE UP and PAGE DOWN keys can be used To go from line to line within a page the LINE UP and...

Page 42: ... only information on the previous line will be available USE This key will have no effect when a flash message or HELP message is shown on the display Once HELP mode is entered the LINE UP and LINE DOWN keys can be used to view the HELP message The CLEAR key is used to exit from HELP mode and return to the previous display mode The ACTUAL VALUES and SET POINTS keys can also be used to exit HELP mo...

Page 43: ...he ac tive output relay contacts if motor conditions allow see below The message RESET NOT POSSIBLE RESET NOT POSSIBLE Condition still present Condition still present will be displayed if any active output relays cannot be reset USE A latched relay cannot be reset if the trip alarm condition persists eg an OVERLOAD TRIP lock out or a high RTD temperature Pre trip motor values may be viewed in ACTU...

Page 44: ...pressing the VALUE UP VALUE DOWN key START COMMISSIONING START COMMISSIONING YES YES Then when the STORE key is pressed the following flash message will appear on the display COMMISSIONING DATA COMMISSIONING DATA cleared cleared All statistical data see section 3 24 will then be cleared USE The STORE key can be used only in SETPOINTS mode to store new set points or in ACTUAL VALUES mode to clear t...

Page 45: ...ike system of pages and lines One line from any page may be displayed at any given time To turn a page the PAGE UP and PAGE DOWN keys are used To scan the lines on a page the LINE UP and LINE DOWN keys are used In the HELP and TRIP ALARM modes only the LINE UP and LINE DOWN keys are needed When control power is applied to the relay the following power up message will be displayed GE MULTILIN 269 R...

Page 46: ...Thermal capacity used This line is shown only if the answer to the question ARE THERE ANY RTDs CONNECTED is NO 5 UNBALANCE RATIO In Ip UNBALANCE RATIO In Ip U B XXX PERCENT U B XXX PERCENT Ratio of negative to positive sequence currents 6 GROUND FAULT CURRENT GROUND FAULT CURRENT G F XX X AMPS G F XX X AMPS Actual ground fault current 7 ST HR TIMERS MIN ST HR TIMERS MIN XX XX XX XX XX XX XX XX XX ...

Page 47: ... STATOR TEMPERATURE RTD 2 XXX DEGREES C RTD 2 XXX DEGREES C or RTD TEMPERATURE RTD TEMPERATURE RTD 2 XXX DEGREES C RTD 2 XXX DEGREES C RTD 2 temperature 6 STATOR TEMPERATURE STATOR TEMPERATURE RTD 3 XXX DEGREES C RTD 3 XXX DEGREES C or RTD TEMPERATURE RTD TEMPERATURE RTD 3 XXX DEGREES C RTD 3 XXX DEGREES C RTD 3 temperature 7 STATOR TEMPERATURE STATOR TEMPERATURE RTD 4 XXX DEGREES C RTD 4 XXX DEGR...

Page 48: ... XXX DEGREES C Maximum RTD 7 temperature since last ac cess 14 MAXIMUM RTD 8 TEMP SINCE MAXIMUM RTD 8 TEMP SINCE LAST ACCESS XXX C LAST ACCESS XXX C Maximum RTD 8 temperature since last ac cess 15 CLEAR LAST ACCESS DATA CLEAR LAST ACCESS DATA XXX XXX Used to clear the data in the last 5 lines see section 3 1 STORE key 16 END OF PAGE TWO END OF PAGE TWO ACTUAL VALUES ACTUAL VALUES Last line of page...

Page 49: ...NDS TRIP XXX SECONDS Estimated time to overload trip under present conditions seen only during overloads 3 MOTOR LOAD AS A PERCENT MOTOR LOAD AS A PERCENT FULL LOAD XXX PERCENT FULL LOAD XXX PERCENT Actual motor current as a percentage of full load 4 THERMAL CAPACITY THERMAL CAPACITY USED XXX PERCENT USED XXX PERCENT Percentage of motor thermal capacity used 5 END OF PAGE THREE END OF PAGE THREE A...

Page 50: ...SSIONING XXXXX HRS Total motor running hours since last commis sioning 3 MEGAWATTHOURS SINCE LAST MEGAWATTHOURS SINCE LAST COMMISSIONING XXXXX MWHR COMMISSIONING XXXXX MWHR Total megawatthours since last commissioning 4 START NEW COMMISSIONING START NEW COMMISSIONING XXX XXX Used to clear the data in the last 14 lines see section 3 1 STORE key 5 END OF PAGE FOUR END OF PAGE FOUR ACTUAL VALUES ACTU...

Page 51: ...RIP PHASE CURRENT I3 XXX AMPS I3 XXX AMPS I3 motor phase current prior to last relay trip 9 PRE TRIP U B RATIO PRE TRIP U B RATIO In Ip XXX PERCENT In Ip XXX PERCENT Ratio of negative to positive sequence currents prior to last relay trip 10 PRE TRIP G F CURRENT PRE TRIP G F CURRENT G F XXX AMPS G F XXX AMPS Ground fault current prior to last relay trip will be if delay set to 0 0 0 25 0 5 11 PRE ...

Page 52: ...nd storing it Once the data is cleared the flash message PRE TRIP DATA CLEARED is dis played for a few seconds Once cleared the cause of last event and cause of last trip messages will be blank all pre trip data will be equal to zero the PF sign will be reset to a default of Lag and the pre trip kW and pre trip kvar signs will be reset to a default of See section 3 24 17 END OF PAGE FIVE END OF PA...

Page 53: ...ERS ACTUAL VALUES page 6 header 2 LEARNED Istart AVG OF 4 LEARNED Istart AVG OF 4 STARTS XXX AMPS STARTS XXX AMPS Learned average motor starting current of 4 starts 3 LEARNED Istart last one LEARNED Istart last one XXX AMPS XXX AMPS Learned motor starting current from last start 4 END OF PAGE SIX END OF PAGE SIX ACTUAL VALUES ACTUAL VALUES Last line of page 6 ...

Page 54: ...PHASE KWATTS KW XXXXX KW XXXXX Positive or negative 3 phase kwatts See Figure 3 7 for power measurement con ventions 6 3 PHASE KVARS 3 PHASE KVARS KVAR XXXXX KVAR XXXXX Positive or negative 3 phase kvars See Figure 3 7 for power measurement con ventions 7 POWER FACTOR POWER FACTOR PF X XX LAG PF X XX LAG Power factor and Lead or Lag sign See Figure 3 7 for power measurement con ventions 8 FREQUENC...

Page 55: ...XX in the message represents one of the following trips Overload Trip Speed Switch Trip Short Circuit Trip Differential Trip Rapid Trip Single Phase Trip Stator RTD Trip Spare Input Trip RTD Trip Power Factor Trip Ground Fault Trip Undervoltage Trip Acceleration Trip Overvoltage Trip Phase Reversal Trip Undercurrent Trip 3 3d Cause of Last Event An event is defined as a TRIP or an INHIBIT If the l...

Page 56: ...nt into the 269 s internal memory Once the STORE key is pressed the flash message new setpoint stored new setpoint stored will appear on the display and the new setpoint value will be used by the 269 relay If an attempt is made to store a new setpoint value without the Access terminals shorted together the new value will not be stored and the flash message ILLEGAL ACCESS ILLEGAL ACCESS will appear...

Page 57: ...ANCE ALARM LEVEL U B ALARM XX PERCENT U B ALARM XX PERCENT 4 30 or OFF increments of 1 Factory Value 10 3 10 9 U B ALARM TIME DELAY U B ALARM TIME DELAY TIME DELAY XXX SEC TIME DELAY XXX SEC 3 255 seconds increments of 1 Factory Value 5 3 10 10 UNBALANCE TRIP LEVEL UNBALANCE TRIP LEVEL U B TRIP XX PERCENT U B TRIP XX PERCENT 4 30 or OFF increments of 1 Factory Value 15 3 10 11 U B TRIP TIME DELAY ...

Page 58: ...NDS 1 255 seconds increments of 1 Factory Value 10 3 12 22 UNDERCURRENT TRIP LEVEL UNDERCURRENT TRIP LEVEL U C TRIP OFF AMPS U C TRIP OFF AMPS 1 1000 amps or OFF incre ments of 1 Factory Value OFF 3 12 23 UNDERCURRENT TRIP DELAY UNDERCURRENT TRIP DELAY TIME DELAY XXX SECONDS TIME DELAY XXX SECONDS 1 255 seconds increments of 1 Factory Value 5 3 12 24 MECHANICAL JAM ALARM MECHANICAL JAM ALARM ALARM...

Page 59: ...n Line Setpoint Range and Units Manual Ref 1 30 IMMEDIATE OVERLOAD IMMEDIATE OVERLOAD LEVEL X XX x FLC LEVEL X XX x FLC 1 01 FLC 1 50 FLC or OFF in crements of 0 01 FLC Factory Value OFF 3 15 31 END OF PAGE ONE END OF PAGE ONE SETPOINT VALUES SETPOINT VALUES ...

Page 60: ...ARM LEVEL STATOR 1 ALARM LEVEL XXX DEGREES C XXX DEGREES C or RTD 1 ALARM LEVEL RTD 1 ALARM LEVEL XXX DEGREES C XXX DEGREES C 0 200 degrees C or OFF increments of 1 32 392 degrees F Factory Value OFF 3 16 7 STATOR 1 TRIP LEVEL STATOR 1 TRIP LEVEL XXX DEGREES C XXX DEGREES C or RTD 1 TRIP LEVEL RTD 1 TRIP LEVEL XXX DEGREES C XXX DEGREES C 0 200 degrees C or OFF increments of 1 32 392 degrees F Fact...

Page 61: ...GREES C 0 200 degrees C or OFF increments of 1 32 392 degrees F 3 16 15 STATOR 5 TRIP LEVEL STATOR 5 TRIP LEVEL XXX DEGREES C XXX DEGREES C or RTD 5 TRIP LEVEL RTD 5 TRIP LEVEL XXX DEGREES C XXX DEGREES C 0 200 degrees C or OFF increments of 1 32 392 degrees F Factory Value OFF 3 16 16 STATOR 6 ALARM LEVEL STATOR 6 ALARM LEVEL XXX DEGREES C XXX DEGREES C or RTD 6 ALARM LEVEL RTD 6 ALARM LEVEL XXX ...

Page 62: ...egrees C or OFF increments of 1 32 392 degrees F 3 17 21 RTD 8 ALARM LEVEL RTD 8 ALARM LEVEL XXX DEGREES C XXX DEGREES C 0 200 degrees C or OFF increments of 1 32 392 degrees F 3 17 22 RTD 8 TRIP LEVEL RTD 8 TRIP LEVEL XXX DEGREES C XXX DEGREES C 0 200 degrees C or OFF increments of 1 32 392 degrees F 3 17 23 END OF PAGE TWO END OF PAGE TWO SETPOINT VALUES SETPOINT VALUES ...

Page 63: ...Units Manual Ref 3 24 3 1 PAGE 3 SETPOINT VALUES PAGE 3 SETPOINT VALUES O L CURVE SETPOINTS O L CURVE SETPOINTS 3 18 2 SELECTED CURVE NUMBER SELECTED CURVE NUMBER CURVE X CURVE X 1 8 Factory Value 4 3 18 3 END OF PAGE THREE END OF PAGE THREE SETPOINT VALUES SETPOINT VALUES 3 18 ...

Page 64: ...P RELAY G F TRIP TRIP or AUX 1 or TRIP AUX 1 TRIP RELAY ACCEL TIME TRIP TRIP or AUX 1 or TRIP AUX 1 TRIP RELAY PHASE REVERSAL TRIP TRIP or AUX 1 or TRIP AUX 1 TRIP RELAY METER OPTION INHIBIT LOCKOUTS TRIP or AUX 1 or TRIP AUX 1 AUX 1 RELAY SINGLE PHASE TRIP or AUX 1 or TRIP AUX 1 TRIP RELAY U V TRIP TRIP or AUX 1 or TRIP AUX 1 TRIP RELAY METER OPTION O V TRIP TRIP or AUX 1 or TRIP AUX 1 TRIP RELAY...

Page 65: ...in ACTUAL VALUES mode to which the display will return if no key is pressed for more than four minutes and no trips or alarms are present 1 page 1 see Table 3 2 2 page 2 3 page 3 4 page 4 5 page 5 6 page 6 Factory Value 1 4 DEFEAT NO SENSOR ALARM DEFEAT NO SENSOR ALARM XXX XXX This setpoint is used to enable or defeat the Broken RTD Sensor Alarm This alarm will only become active for open circuit ...

Page 66: ...lay see section 3 20 With this feature defeated the effect of the stator RTD temperature is not included in the thermal memory YES RTD bias defeated RTD temperature does not affect thermal memory NO RTD bias enabled thermal memory affected as per section 3 20 Factory Value YES 8 RTD BIAS CURVE MINIMUM RTD BIAS CURVE MINIMUM VALUE XXX C VALUE XXX C Not seen when RTD input to thermal memory is defea...

Page 67: ...th this feature defeated the effect of negative sequence unbalance is not included in the thermal memory YES Unbalance bias defeated thermal memory affected by average of three phase currents NO Unbalance bias enabled thermal memory affected by equivalent motor heating current including negative sequence contribution Note Ensure that the proper value for the K factor is programmed in the following...

Page 68: ... 3 20 YES Indicated RTD will be used for ambient air temperature measurement NO Indicated RTD will be used for other non stator temperature measurement Factory Value NO 17 ANALOG OUTPUT PARAMETER ANALOG OUTPUT PARAMETER XXXXXXXXXXXXXX XXXXXXXXXXXXXX This setpoint is used to select the analog current output function Motor Load Motor current as a percentage of full load Thermal Memory Motor thermal ...

Page 69: ...rm functions to be either manually or automatically reset The Immediate O L Alarm function will always be automatically reset regardless of the Latchcode latched manual reset unlatched automatic reset Value Trip Alarm Aux 1 Aux 2 1 latched unlatched unlatched latched 2 or 3 latched latched unlatched latched 4 or 5 latched unlatched latched latched 6 or 7 latched latched latched latched Factory Val...

Page 70: ... case it is also recom mended that the AUX2 contacts be monitored for relay failure If however the motor is more critical than the process then the trip contacts should be programmed failsafe See Figure 3 2 and Figure 3 3 23 SPARE INPUT TO READ SPARE INPUT TO READ 52B CONTACT XXX 52B CONTACT XXX This setpoint is designed to read the 52B contact of a breaker or equivalent normally closed auxiliary ...

Page 71: ...al damage curve to the cold motor thermal damage curve See section 3 20 TCR 1 100 Hot motor stall time Cold motor stall time Range 0 90 increments of 1 0 disables this feature Factory Value 15 26 THERMAL CAPACITY USED THERMAL CAPACITY USED ALARM LEVEL XXX ALARM LEVEL XXX This setpoint is used to set the level to which the thermal capacity will be compared If the thermal ca pacity equals or exceeds...

Page 72: ...to test any connected switch gear This can only be done when the motor is stopped and not tripped With the access terminals shorted pressing the VALUE UP or VALUE DOWN keys followed by the STORE key will cause different output relays to change state NO No output relays activated TRIP Trip relay activated ALARM Alarm relay activated AUX 1 Aux 1 relay activated AUX 2 Aux 2 relay activated ALL All ou...

Page 73: ...after the last key is pressed or until the access jumper is removed To enable access again the user must ensure the access jumper is installed and then store his software access code 0 500 in increments of 1 or OFF A value of OFF disables the Software Access feature A value of 0 indicates that the feature is enabled Factory Value OFF 8 SERVICE USE ONLY SERVICE USE ONLY CODE XX CODE XX This line is...

Page 74: ...Setpoints Pg 6 3 SETUP AND USE 3 35 13 END OF PAGE SIX END OF PAGE SIX SETPOINT VALUES SETPOINT VALUES ...

Page 75: ...n in the above setpoint is NO i e the meter is not online 4 METER PHASE CT METER PHASE CT PRIMARY XXX AMPS PRIMARY XXX AMPS Enter the phase CT primary value of the current transformers connected to the meter NOTE Failure to enter a correct value for CT primary will result in incorrect values from the meter 20 1500 increments of 1 Factory Value 100 5 PHASE VT RATIO PHASE VT RATIO VT RATIO XXX 1 VT ...

Page 76: ...ge voltage received from the me ter NOTE To detect an undervoltage alarm upon complete loss of all three phases the setpoint Enable U V Trip Alarm if Avg Volts 0 must be set to Yes 30 95 increments of 1 or OFF Factory Value OFF 9 U V ALARM TIME DELAY U V ALARM TIME DELAY TIME DELAY XXX SEC TIME DELAY XXX SEC This setpoint sets the time that an undervoltage alarm condition must persist in order to ...

Page 77: ...P LEVEL OVERVOLTAGE TRIP LEVEL O V TRIP XX VT O V TRIP XX VT This setpoint sets the threshold for the overvoltage trip condition as a percentage of VT primary The trip level programmed in this setpoint is compared to the average voltage received from the meter 101 115 increments of 1 or OFF Factory Value OFF 15 O V TRIP TIME DELAY O V TRIP TIME DELAY TIME DELAY XXX SEC TIME DELAY XXX SEC This setp...

Page 78: ...D POWER FACTOR LEAD ALARM LEVEL X XX ALARM LEVEL X XX This setpoint is used to set the power factor lead alarm threshold level for a power factor alarm condi tion 0 05 0 99 increments of 0 01 or OFF Factory Value OFF 20 POWER FACTOR LAG POWER FACTOR LAG ALARM LEVEL X XX ALARM LEVEL X XX This setpoint is used to set the power factor lag alarm threshold level for a power factor alarm condi tion 0 05...

Page 79: ...itive kvar limit threshold for a kvar alarm condition 100 25000 increments of 100 or OFF Factory Value OFF 26 NEGATIVE KVAR ALARM NEGATIVE KVAR ALARM LEVEL XXXXX KVARS LEVEL XXXXX KVARS This setpoint is used to set the negative kvar limit threshold for a kvar alarm condition 100 25000 increments of 100 or OFF Factory Value OFF 27 KVAR ALARM KVAR ALARM TIME DELAY XXX SEC TIME DELAY XXX SEC This set...

Page 80: ... may also be pressed to exit HELP mode 3 6 TRIP ALARM Mode TRIP ALARM mode can only be entered when an ac tual motor value exceeds a setpoint value or an alarm becomes active Every trip and alarm condition has a separate message so that the exact nature of the problem can be easily identified TRIP ALARM mode will be entered whenever a setpoint is exceeded or an alarm condition arises regardless of...

Page 81: ...MIN Motor thermal capacity exceeded Motor lock out time is also shown Excessive load with motor running or locked rotor on start Wait for motor to cool 3 18 7 STARTS HOUR STARTS HOUR LOCKOUT TIME XXX MIN LOCKOUT TIME XXX MIN Total number of motor starts over the past hour greater than Number of Starts per Hour setpoint Reduce number of starts during normal motor operation 3 9 8 TIME BETWEEN STARTS...

Page 82: ...mperature ex ceeded 3 17 25 STATOR RTD HIGH ALARM STATOR RTD HIGH ALARM RTD XX XXX C RTD XX XXX C Stator RTD High Alarm Level tem perature exceeded Check motor ventillation and ambient temperature 3 16 26 RTD HIGH ALARM RTD HIGH ALARM RTD XX XXX C RTD XX XXX C RTD High Alarm Level temperature exceeded 3 17 27 BROKEN RTD LINE BROKEN RTD LINE see RTD ACTUAL VALUES see RTD ACTUAL VALUES Open circuit ...

Page 83: ...3 9 To protect against a locked rotor condition the 269 relay allows its thermal memory see section 3 20 to fill during a start Thus if the heat produced by a locked rotor condition causes the thermal capacity of the mo tor to be exceeded an overload trip will be initiated The acceleration time setpoint can only be used for driven load protection not locked rotor protection If the Acceleration Tim...

Page 84: ... amount of un balance that a given motor can tolerate is therefore dependent on the rotor design and heat dissipation characteristics Persistent minor voltage unbalance can thus lead to rotor thermal damage while severe unbalance such as single phasing can very quickly lead to a motor burn out For phase currents above 100 FLC the 269 relay calculates the ratio of the negative to positive sequence ...

Page 85: ...solidly grounded systems In resistance grounded systems there is a resistance in series with the supply source to limit ground fault current and allow the system to continue operating for a short time under fault conditions The fault should be located and corrected as soon as pos sible however since a second fault on another phase would result in a very high current flow In addition to damaging th...

Page 86: ...3 SETUP AND USE 3 47 Figure 3 2 Wiring Diagram for Contactors ...

Page 87: ...3 SETUP AND USE 3 48 Figure 3 3 Wiring Diagram for Breakers ...

Page 88: ...stems the trip setpoint should be set to OFF The feature may be assigned to the AUX1 relay and connected such that it trips an upstream device that is capable of breaking the fault current 3 12 Undercurrent Setpoints These setpoints are found in SETPOINTS mode page 1 and are normally used to detect a decrease in motor current flow caused by a loss of or decrease in motor load This is especially us...

Page 89: ...ll RTD related Setpoints and Actual Values thus making it easier to program for the application The 269 relay displays temperatures in either Celsius or Fahrenheit depending on the RTD Message Display setpoint If Fahrenheit option is chosen the increment can vary between 1 and 2 due to the conversion from Celsius to Fahrenheit and the rounding of the result NOTE CARE MUST BE TAKEN NOT TO ENTER CEL...

Page 90: ... stored as OFF Similarly if the Low Temperature Alarm is enabled Setpoints page 5 the relay will enter Trip Alarm mode to warn the user of any one RTD measuring 0 C 32 F The 269 can detect shorted RTD s in motors where the normal running temperature hence stator RTD and bearing RTD tem perature is not 0 C 32 F or less If an RTD becomes shorted and the Low Temperature Alarm setpoint is enabled the ...

Page 91: ...he overload curve does not pick up until the de sired level This setpoint determines where the overload curve picks up as a percent of FLC it effectively cuts off the overload curve below the setpoint x FLC NOTE If a new curve number is stored while the motor is running the new curve will not come into effect until the motor has stopped ...

Page 92: ...637 820 1093 1366 1 50 70 140 210 280 490 630 840 1050 1 75 42 84 127 169 296 381 508 636 2 00 29 58 87 116 203 262 349 436 2 25 21 43 64 86 150 193 258 322 2 50 16 33 49 66 116 149 199 249 2 75 13 26 39 53 92 119 159 198 3 00 10 21 32 43 76 98 131 163 3 50 7 15 23 30 54 69 92 115 4 00 5 11 17 23 40 52 69 87 4 50 4 9 13 18 31 40 54 67 5 00 3 7 10 14 25 32 43 54 5 50 2 5 8 11 20 26 35 43 6 00 2 4 7...

Page 93: ...3 SETUP AND USE 3 54 Figure 3 5 Standard Overload Curves ...

Page 94: ...motor ther mal capacity used an OVERLOAD TRIP will be initiated This value is determined from the overload curve Thermal memory is emptied in certain situations If the motor is in a stopped state the memory will discharge within the motor STOPPED COOL TIME factory value 30 min If the motor is running at less than full load thermal memory will discharge at a programmed rate to a certain value This ...

Page 95: ...no effect on the thermal capacity used Between these two extremes the thermal capacity used is determined by looking up the value of the Hottest Stator RTD on the user s curve RTD BIAS Min Center Max temperatures RTD BIAS Center Thermal Capacity and finding the correspond ing Thermal Capacity used The Hottest Stator RTD value for Thermal Capacity used is compared to the value of THERMAL CAPACITY U...

Page 96: ...e RESET NOT POSSIBLE RESET NOT POSSIBLE Condition still present Condition still present to be displayed However shorting the Emergency Restart terminals together will reduce the lock out time allowing the relay to be reset immediately Note If RTD input to thermal memory is enabled SETPOINTS page 5 the lock out time may not be reduced to 0 minutes since the thermal capacity available is dependent o...

Page 97: ...hould be changed as each appli cation requires In the event of a non volatile memory failure which will be detected by the self test feature see section 3 23 the 269 relay will reload the factory setpoints but will not provide motor protection A list of the motor current RTD and overload curve setpoints is given in Table 3 6 For other factory set points see Tables 3 7 and 3 3 3 26 Meter Option The...

Page 98: ...vars Conversely if a synchronous motor is run overexcited as a synchro nous condensor it may be capable of supplying vars back to the system Such motors are typically used to correct a poor PF in an industrial plant The 269 dis plays motor supplied vars as negative vars when a synchronous motor is running at synchronous speed its power factor is unity and the vars required to run the motor are com...

Page 99: ...h value with the field applied The result is a power factor that is significantly low with PF kW kVA low value high value Because of these unrealistic motor conditions and because of digital technology of sampling waveforms it is possible that the PF sign is detected to be either leading or lagging This is clearly seen in Figure 3 7 where at around 270 the PF is very low and changes signs with the...

Page 100: ...arning G F Alarm l U B Alarm l U C Alarm Mechanical Jam Alarm Stator RTD Alarm RTD Alarm Broken Sensor Alarm Low Temperature Alarm TC Alarm U V Alarm O V Alarm PF Alarm KVAR Alarm Meter Alarm l Self Test Alarm l TRIP SIGNALS O L Trip l U B Trip l S C Trip U C Trip Rapid Trip l Stator RTD Trip RTD Trip G F Trip l Acceleration Time Trip l Phase Reversal Trip Inhibits l Single Phase Trip l U V Trip O...

Page 101: ...ion All tests described in the following sections will be ap plicable with factory setpoints and configurations left unchanged Similar tests can be performed after new setpoints have been stored in the 269 relay 4 3 Phase Current Input Functions All phase current functions use digital current informa tion converted from the analog phase CT inputs Functions that use phase current readings are over ...

Page 102: ...4 RELAY TESTING 4 2 Figure 4 1 Secondary Injection Test Set AC Input to 269 Relay ...

Page 103: ...4 RELAY TESTING 4 3 Figure 4 2 Secondary Injection Test Set DC Input to 269 Relay ...

Page 104: ...e If the injected current is adjusted to over 4 0 Amps for longer than 10 0 seconds the ground fault alarm should be come active If over 8 0 Amps is injected for more than 50 msec a ground fault trip should occur These tests can be performed for other CT ratios and setpoints 4 5 RTD Measurement Tests The correct operation of each of the RTD inputs can be tested by simulating RTDs with potentiomete...

Page 105: ...ls together momentarily to discharge the thermal memory in the relay The trip relay should ac tivate after a time determined from the overload curve amount of unbalance present and motor RTD tem perature The time to trip at a given overload level should never be greater than the time on the overload curve Current unbalance and high stator RTD tem peratures will cause this time to be shorter if the...

Page 106: ...4 RELAY TESTING 4 6 Figure 4 3 Hi Pot Testing ...

Page 107: ...ays are used because of their excellent isolation transient im munity and almost zero on resistance A stable current source feeds each of the RTDs in turn and 128 read ings are taken over a period of one second for each RTD This provides for stable averaging and good 50 60 Hz noise rejection An RTD lead compensation circuit subtracts the RTD lead resistance and then the analog RTD voltage is multi...

Page 108: ...5 THEORY OF OPERATION 5 2 Figure 5 1 Hardware Block Diagram ...

Page 109: ...the thermal memory The RTD readings are compared to the trip and alarm levels and relay activation is initiated if conditions are met Each RTD is read 128 times over a one second scan interval The KEYSERVICE EXTERNAL SWITCH module takes in all of the data associated with the keypad and exe cutes the function of each key Timers for the closure times of the VALUE UP DOWN PAGE UP DOWN and LINE UP DOW...

Page 110: ...5 THEORY OF OPERATION 5 4 Figure 5 2 Firmware Block Diagram ...

Page 111: ...motor running at 1 FLC A motor that is running at 10 of FLC will obviously use less thermal capacity than a motor at 100 FLC For example if the FLC Thermal Capacity Reduction Setpoint is set at 30 then with the motor running at 1 FLC the thermal capacity used will settle at 30 Us ing the same example with the motor running at 50 FLC the thermal capacity used will settle at 15 50 of 30 A practical ...

Page 112: ...6 APPLICATION EXAMPLES 6 2 Figure 6 1 Thermal Limit Curves ...

Page 113: ...mponent analysis of unbalance the ratio of negative sequence current to positive sequence current in this example yields I I I I I x I xI I xI x I where x 1 120 0 5 j 0 866 3 9 0 1 120 3 9 0 1 120 5 112 95 1 120 3 9 0 5 127 05 5 232 95 3 9 0 5 7 05 5 352 95 3 9 3 01 j 3 99 3 01 j 3 n P 2 1 1 3 a 2 b c 1 3 a b 2 c 2 2 5 112 95 1 120 5 112 95 5 112 95 99 3 9 4 96 j 0 61 4 96 j 0 61 2 12 13 82 0 1534...

Page 114: ...1 0 5 15 34 14 22 Finally the ratio of negative sequence to positive se quence current for any magnitude of phase current may be displayed on a graph as shown in Fig 3 providing the supply is a true three phase supply and there is no zero sequence current flowing no ground fault Figure 3 ...

Page 115: ...tive Sequence Current K Constant Multiplier that Equates In to Ip FLC Full Load Current FLC TCR FLC Thermal Capacity Reduction Setpoint TC Thermal Capacity used RTD BIAS TC TC Value looked up from RTD Bias Curve NOTE If Unbalance input to thermal memory is en abled the increase in heating is reflected in the thermal model If RTD Input to Thermal Memory is enabled the feedback from the RTDs will co...

Page 116: ...ax RTD Bias Maximum Temperature Value Tmin RTD Bias Minimum Temperature Value Hottest RTD Hottest Stator RTD measured TC Thermal Capacity Used TC RTD Thermal Capacity Looked up on RTD Bias Curve TC Model Thermal Capacity based on the Thermal Model ...

Page 117: ...e leads are the same length gage and material hence the same resis tance RLead A RLead B RLead C RLead or RHOT RCOMP RRETURN RLead Electronically subtracting VAB from VBC leaves only the voltage across the RTD In this manner lead length is effectively negated VBC VAB VLead VRTD VLead VLead VLead VBC VAB VRTD In order to connect 6 Stator RTDs with only 8 wires the wiring illustrated in figure 2 may...

Page 118: ...1 2 VLead 1 HOT VRTD 1 VLink I VLink II VLink III VLink IV VLink V VLead 6 RETURN V2 3 VLink I VLink II VLink III VLink IV VLink V VLead 6 COMP VLead 6 RETURN Assuming that the links at the motor side and at the relay side are the same length gage and material therefore the same resistance and all the hot return and compensation leads have also the same resistance we can con clude that V1 2 V2 3 V...

Page 119: ...9 VLead Comp VR Comp VLead Return Since VLead Compensation VLead Hot V17 18 V18 19 VLead Hot VLead Hot 1 VRTD VLead Return 1 VLead Return VLead Comp VR Comp VLead Return V17 18 V18 19 VLead Hot 1 VRTD VLead Return 1 VR Comp V17 18 V18 19 VRTD ONLY IF VR Comp VLead Hot 1 VLead Return 1 or RComp RLead Hot 1 RLead Return 1 The illustration shown in figure 3 is for RTD 8 but it may be applied to any o...

Page 120: ...created In the two CT configuration the currents will sum vec torially at the common point of the two CTs The dia gram illustrates the two possible configurations If one phase is reading high by a factor of 1 73 on a system that is known to be balanced simply reverse the polar ity of the leads at one of the two phase CTs taking care that the CTs are still tied to ground at some point Po larity is ...

Page 121: ...MS asymm RMS RMS 2 2 2 2 I I RMS asymm RMS 2 2 3 I I RMS asymm RMS 3 Where Irms is current when voltage is applied at a maximum or the symmetrical current A motor or a transformer is never a perfect inductor therefore the value of 1 73 will never be reached The DC offset will die away as a function of the X R ratio typically a few cycles Figure 3 represents an exag geration of the three phase curr...

Page 122: ...when the GE Multilin 2000 1 Ground CT sensor is used The reason being the 2000 1 CT is usually used on high resistance grounded systems where faults are limited to 200 Amps or less and the relay is set to trip instantaneously on low levels of ground current anywhere between 1 and 10 Amps 1 to 10 Amp pri mary current on the 2000 1 CT translate into very small signals 0 5 to 5 mA on the secondary of...

Page 123: ...nduce ground current in adjacent motors as well causing their zero sequence CTs and relays to pick up and possibly trip This nuisance trip may occur if the ground fault instantaneous element for any of those motors is set This phenomenon has been seen and identified to last a cycle or more depending on many factors such as the size of the motors the trip levels set the sensitivity of the relay as ...

Page 124: ...e there is no apprecia ble effect on the ratio when used within the limits dic tated by the class and rating The C stands for calculated the actual ratio correction should be differ ent from the calculated ratio correction by no more than 1 A C type CT is typically a bushing window or bar type CT with uniformly distributed windings A T formerly H represents a CT with a high leakage flux in the cor...

Page 125: ...it is important to recognize that the secondary exciting voltage is the total voltage that the CT can develop at the secondary In this case that voltage will drop across the secondary winding resistance as well as any load that is applied to the unit Therefore the secondary winding resistance must always be included with the excitation curves or the information is incomplete A curve with a knee at...

Page 126: ...APPENDIX H H 3 Figure H 1 Excitation Curves Figure H 2 Excitation Curves Method ...

Page 127: ...NO indicates 2000 1 RTD 4 Trip Level C Single Phase Trip G F CT Primary1 RTD 5 Alarm Level C U V Trip G F Alarm Level amps RTD 5 Trip Level C O V Trip G F Alarm Delay secs RTD 6 Alarm Level C PF Trip G F Trip Level amps RTD 6 Trip Level C O L Warning G F Trip Delay secs RTD 7 Alarm Level C G F Alarm U C Alarm Level amps RTD 7 Trip Level C U B Alarm U C Alarm Delay secs RTD 8 Alarm Level C U C Alar...

Page 128: ...vel VT Running Cool Time min O V Trip Delay sec Stopped Cool Time min Block PF Prot on Start RTD 8 Ambient Sensor4 PF Protection Delay sec 8 Analog Output Blk PF Alm Trip by sec 9 Analog Output Type PF Lead Alarm Level Motor Load Anlg Output FS PF Lag Alarm Level Relay Alarm Latchcode PF Alarm Delay sec Drawout Failsafe Code 7 PF Lead Trip Level Relay Failsafe Code PF Lag Trip Level Sp Inp to Read...

Page 129: ...NO indicates 2000 1 RTD 4 Trip Level C Single Phase Trip G F CT Primary1 RTD 5 Alarm Level C U V Trip G F Alarm Level amps RTD 5 Trip Level C O V Trip G F Alarm Delay secs RTD 6 Alarm Level C PF Trip G F Trip Level amps RTD 6 Trip Level C O L Warning G F Trip Delay secs RTD 7 Alarm Level C G F Alarm U C Alarm Level amps RTD 7 Trip Level C U B Alarm U C Alarm Delay secs RTD 8 Alarm Level C U C Alar...

Page 130: ...vel VT Running Cool Time min O V Trip Delay sec Stopped Cool Time min Block PF Prot on Start RTD 8 Ambient Sensor4 PF Protection Delay sec 8 Analog Output Blk PF Alm Trip by sec 9 Analog Output Type PF Lead Alarm Level Motor Load Anlg Output FS PF Lag Alarm Level Relay Alarm Latchcode PF Alarm Delay sec Drawout Failsafe Code 7 PF Lead Trip Level Relay Failsafe Code PF Lag Trip Level Sp Inp to Read...

Page 131: ...rom the 269 relay all non fail safe output relays will go to the inactive state Tripped Refers to the state of the motor controller starter or system circuit breaker When one of these devices is tripped the power to the motor will be removed Normally the Trip relay of the 269 is used to control this operation Mode The large amount of information that can be viewed on the 269 relay display is divid...

Page 132: ...269 B5 1 0 05 12 94 269 175 1601 0025 B9 269 B5 1 0 01 23 95 GEN 128 1601 0025 BA 269 B5 1 1 01 26 95 269 187 269 199 1601 0025 BB 269 B5 2 0 04 11 95 269 205 1601 0025 C1 269 C5 2 1 08 21 95 269 218 1601 0025 C2 269 C5 2 1 09 01 95 269 218 1601 0025 C3 269 C5 2 1 04 30 96 Changed to GE logo 1601 0025 C4 269 C6 0 0 11 28 96 269 249 1601 0025 C5 269 C6 0 0 03 05 97 269 279 1601 0025 C6 269 C6 0 0 0...

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Page 134: ...al switch 2 19 5 1 F faceplate 2 19 factory default settings 3 6 3 15 factory values 3 25 failsafe 2 9 2 16 3 30 3 31 frequency 1 2 1 6 2 18 2 24 3 15 3 45 fuse 2 12 G ground CT 2 15 ground current 2 15 ground fault 1 1 2 1 2 15 2 16 3 7 3 46 3 49 3 50 4 1 4 4 4 5 5 1 6 1 display 4 4 ground fault current 3 12 ground resistor 3 49 grounded system 3 46 3 49 H hardware configuration 2 19 3 31 I inhib...

Page 135: ...3 50 3 51 potentiometers 4 4 resistance 4 4 sensor connections 2 17 sensor type 3 21 setpoints 3 2 3 21 3 50 stator 2 7 2 15 2 16 3 16 3 27 3 42 3 50 3 51 4 4 4 5 stator RTD temperature 3 27 3 56 stator RTD voting 3 27 4 4 temperature 3 2 3 4 3 8 4 5 trip 3 42 3 61 running hours 1 2 3 11 3 58 S serial number identifier 3 34 short circuit 2 12 2 15 2 16 3 50 4 1 4 5 5 1 6 1 software access 3 34 sof...

Page 136: ... Diagram 2 22 Figure 2 14 Control Power Wiring 2 23 Figure 2 15 MPM and 269 Communication Wiring 2 24 Figure 2 16 MPM Mounting Dimensions 2 25 Figure 2 17 MPM to 269 Typical Wiring 4 wire Wye 3 VTs 2 26 Figure 2 18 MPM to 269 Typical Wiring 4 wire Wye 2 VTs 2 27 Figure 2 19 MPM to 269 Typical Wiring 3 wire Delta 2 VTs 2 28 Figure 2 20 MPM to 269 Typical Wiring 2 CT 2 29 Figure 2 21 MPM Wiring Open...

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Page 138: ...Controls and Indicators 3 2 Table 3 2 ACTUAL VALUES 3 7 Table 3 3 SETPOINTS 3 18 Table 3 4 TRIP ALARM Messages and Fault Diagnosis 3 42 Table 3 5 Standard Overload Curve Trip Times in seconds 3 53 Table 3 6 Preset Factory Relay Configurations and Functions 3 61 Table 4 1 RTD Resistance vs Temperature 4 4 ...

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Page 140: ...aid to an authorized service centre or the factory Repairs or replacement under warranty will be made without charge Warranty shall not apply to any relay which has been subject to misuse negligence accident incorrect installation or use not in accordance with instructions nor any unit that has been altered outside a GE Multilin authorized factory outlet GE Multilin is not liable for special indir...

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