Eaton Digitrip 520MCV, Instructions Manual

Page 1: ...ime Setting 15 4 6 Instantaneous Current Setting 15 4 7 Ground Fault Current Setting 16 4 8 Ground Fault Time Delay Setting 16 4 9 INCOM 520MCV 16 4 9 1 Breaker Interface Module BIM 16 4 9 2 Remote Ma...

Page 2: ...questions or need additional information or instructions concerning the operation or installation of this device please contact your local representative or the Cutler Hammer Customer Support Center 1...

Page 3: ...rnal control power to operate their protection systems They operate from current signal levels derived through the CH Type V current sensors Status LED will also blink at a faster rate if the Digitrip...

Page 4: ...SECURE THE PLUG AND THE TRIP UNIT TO THE CIRCUIT BREAKER See Figure 1 3 CLOSE THE RATING PLUG DOOR CAUTION THE M4 SCREW SHOULD BE TIGHTENED ONLY UNTIL IT IS SNUG BECAUSE THERE IS NO STOP DO NOT USE A...

Page 5: ...sensors are installed external to the circuit breaker over the main circuit conductors by means of bushings equipped with a ground shield The current sensor rating defines the breaker rating In i e 12...

Page 6: ...Effective 8 2006 Page 6 I L 66A7534H04 Figure 1 5 Secondary Block A Connections Figure 1 6 Secondary Block B Connections...

Page 7: ...d setting The ground fault alarm relay is energized when the ground current continuously exceeds the ground fault pickup setting for a time in excess of a 0 1 second delay The alarm relay will reset a...

Page 8: ...ible cause of this would be the lack or loss of auxilary power during the trip event Figure 1 8 Wiring Diagram for 520MCV with Ground Alarm Power Supply Module This message could also indicate that th...

Page 9: ...secondary contact inputs B 6 B 7 that were shown in Figure 1 6 are used to configure the breaker cell positions for the two schemes Having no jumper from B 6 to B 7 programs the unit for a residual gr...

Page 10: ...K1 9 CSA1 A 4 A 19 CSA2 A 5 CSB1 A 20 CSB2 A 6 CSC1 A 21 CSC2 X1 X2 B 5 B 4 R 1 R 1 CAUTION IF THE PHASE CONNECTIONSARE INCORRECT A NUISANCE TRIP MAY OCCUR ALWAYS OBSERVE THE POLARITY MARKINGS ON THE...

Page 11: ...55 19 1 1200 1250A 3 42 5 35 1 55 19 1 1250 1600A 2000A 3 42 3 42 5 35 5 35 1 55 1 55 20 21 1 1600 1 2000 3 06 1 17 4 67 7 25 2 29 2 93 1 87 1 21 0 47 0 61 0 56 0 31 0 09 Rdc Ohms 15 RATIO WIRE GAUGE...

Page 12: ...Interlocking function on the Digitrip has combined the logic interlocking of Short Delay and Ground Fault A zone out signal is sent whenever the ground fault pick up is exceeded or when the short dela...

Page 13: ...Circuit Battery 3V FET Trip See Section 1 2 Trip LEDs Rating Plug Integrated Processor Custom Designed TA Unit Status LED See Section 3 2 See Section 7 0 See Section 2 3 See Section 3 3 Zone Interlock...

Page 14: ...n The nominal current pickup value is 110 of the setting NOTE Ir is also the basis for the Short Delay Current Setting see Section 4 4 Figure 4 1 Long Delay Current Settings 4 3 Long Delay Time Settin...

Page 15: ...x settings are in the range from 2 to 10 x In the rating plug value and the other two settings are M1 x In and Off The value that M1 has depends upon the plug rating of the circuit breaker and is spec...

Page 16: ...heI2 t response reverts to the FLAT response NOTE Also see Section 3 3 Zone Interlocking M1 value is specified on rating plug Setting Inst x n I 6 Available Settings 2 3 4 6 8 10 M1 OFF In Multiples o...

Page 17: ...es are daisy chained interconnect shielding but do not ground the connection 100 ohm 1 2 watt carbon terminating resistor required at last breaker See T D 17 513 See Section 4 9 for programming INCOM...

Page 18: ...itrip trip unit and the mechanical trip assembly of the circuit breaker The testing can determine the accuracy of the desired trip settings by performing Long Delay Short Delay and Ground Fault functi...

Page 19: ...eries are located on a separate board in the test kit and serve to power up the Digitrip trip unit Battery status LED s A and B function to represent sufficient voltage from both the single lithium ce...

Page 20: ...e to each primary phase current is correct The secondary injection current source is able to deliver up to 5x 1 ampere is 1 per unit into the breaker s secondary contacts This can produce a 300 overlo...

Page 21: ...contacts Hook up a circuit breaker Aux Switch to the MS 2 tester s Contacts terminals to stop the clock and the source of current TEST 2 Continue ramping up current and the circuit breaker should trip...

Page 22: ...ED should flash Test Procedure TEST 1 Turn power switch ON and ramp up current slowly looking for the Digitrip s Unit Status LED to flash consistently at one second intervals This power up should occu...

Page 23: ...d The main body of the battery is the positive side CAUTION EXERCISE CARE WHEN REPLACING THE BATTERY TO ENSURE THAT THE CORRECT POLARITIESARE OBSERVED POLARITY MARKINGS ARE SHOWN ON THE RATING PLUG WH...

Page 24: ...ES NOT MATCH THE SENSOR RATING CAN PRODUCE SERIOUS MISCOORDINATION AND OR FAILURE OF THE PROTECTION SYSTEM 7 0 FRAME RATINGS SENSOR RATINGS AND RATING PLUGS The frame rating of a circuit breaker is th...

Page 25: ...Shop Order Reference PER UNIT MULTIPLIERS Rating Plug Amperes In Ir Continuous Ampere Rating LDS x In Trip Function Per Unit Setting Multi Ampere Equivalent Setting Time Delay Inst In Long Delay In Se...

Page 26: ...TION RECORD Circuit No Address Breaker Shop Order Reference Settings Reference Trip Function Orig 0 Rev 1 Rev 2 Rev 3 Instantaneous Long Delay Setting Long Delay Time Short Setting Short Time Ground F...

Page 27: ...M Ground Fault Test Record should be retained by those in charge of the building s electrical installation in order to be available to the authority having jurisdiction Test Date Circuit Breaker Numbe...

Page 28: ...aint signal to the feeder trip unit the feeder will send a restraint interlocking signal to Z1 Main and feeder trip units will begin to time out and in the event that the branch breaker does not clear...

Page 29: ...power conductors DO NOT GROUND EARTH any Zone Interlock Wiring A2 The maximum distance between two farthest breakers on different zones from the ZO downstream to ZI upstream terminals is 250 feet 76m...

Page 30: ...ce battery LED does not come on when battery check button is pressed Trip unit is malfunctioning Replace trip unit There actually is a ground fault Find location of the fault CH Type V current sensors...

Page 31: ...y or permanently adding Aux Power and then depress Reset pushbutton to fully clear trip buffer See also Note in Section 5 3 2 2 Light load Check breaker ordering information Refer to Sections 1 6 and...

Page 32: ...12 FEET 3 66 METERS OF 14 AWG WIRE NOTE SEE DETAIL ON RIGHT FOR DRAWOUT CIRCUIT BREAKER INFORMATION H R 1 H X1 R 1 X1 R 1 H X1 DETAIL PARTIAL FOR DRAWOUT BREAKER R 1 WIRE LENGTH MAXIMUM FOR DRAWOUT GE...

Page 33: ...ODBUS uses a 4 pin connector which consist of signals A B COMmon and SHielD Three Baud rates of 1200 9600 or 19200 are selectable via programming switch for the MODBUS network The INCOM Baud rate is f...

Page 34: ...ectri cal Inc selling policies or other contractual agreement be tween Eaton and the purchaser THERE ARE NO UNDERSTANDINGS AGREEMENTS WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FO...