Cutler-Hammer Digitrip 220, Instructions Manual

Page 1: ...2 Remote Master Computer 23 4 9 3 INCOM Network Interconnections 23 5 0 Test Procedures 24 5 1 General 24 5 2 When to Test 24 5 3 Functional Field Testing 24 5 3 1 Field Test Kit 24 5 3 2 Handheld Fun...

Page 2: ...lled in the breaker and can be replaced or upgraded in the field by the customer This instruction book specifically covers the application of Digitrip Trip Units see Figure 1 1 installed in Magnum and...

Page 3: ...s Yes Long Long Delay Setting Delay Long Delay Time I2t at 6 x Ir Protection Long Delay Thermal Memory Fixed 1 x In Fixed 10 seconds Yes 0 4 1 0 x In 2 24 Seconds Yes 0 4 1 0 x In 2 24 Seconds Yes 0 4...

Page 4: ...used on 3 pole or 4 pole circuit breakers for the protection of the neutral circuit Only these four models can provide neutral protection although models MLSIA MLSIG MWLSIG CLSIA CLSIG and CWLSIG and...

Page 5: ...r to release the rating plug from the trip unit To remove the trip unit from the circuit breaker deflect the spring clip to release the unit from the steel mounting plate Pull the unit to disengage th...

Page 6: ...o that the 520M 520Mi or 520MC 520MCi liquid crystal display LCD will be functional even when the circuit breaker has no load A Digitrip 520M or 520MC tripunit without auxiliary power will not display...

Page 7: ...greater than this value will be shown as HI Pushing the Reset pushbutton will clear this data Also related to the phase value after a trip event are four dashes This message means that the microproces...

Page 8: ...RUCTIONS PROVIDED Figure 2 1 Tripping Circuit for a Typical Magnum Breaker Partial 2 2 Low Energy Trip Actuator The mechanical force required to initiate the tripping action of a Magnum Circuit Breake...

Page 9: ...ON IF THE SENSOR CONNECTIONS ARE INCORRECT A NUISANCE TRIP MAY OCCUR ALWAYS OBSERVE THE POLARITY MARKINGS ON THE INSTALLATION DRAW INGS TO INSURE CORRECT GROUND FAULT EQUIP MENT PERFORMANCE CONDUCT FI...

Page 10: ...tized by the CHip Cutler Hammer Integrated Processor chip The microcomputer continually digitizes these signals This data is used to calculate true RMS current values which are then continually compar...

Page 11: ...K1 4 K1 3 10 1 10 1 AUX CT K2 9 K2 1 K2 7 B 5 B 7 K1 5 K1 2 Black Trip Actuator LB LC LA K1 6 K1 7 K1 8 K1 9 1 1 1 Source Load K2 8 K2 9 B 4 B 6 20 1 AUX CTs 20 1 K1 3 K2 7 B 5 B 7 K1 2 Black Trip Act...

Page 12: ...e ground fault via element R5 Do not jumper on secondary contacts B 6 B 7 This will defeat all ground fault protection in application for 4 pole breaker Ground fault style trip unit is installed 3 2 1...

Page 13: ...5 are available on4 pole breakers Do not jumper B 6 B 7 in 4 pole applications Source l A I B1 LC1 Lb2 Lc2 I I I II I Black K1 2 Digitrip 520 with GF TriP 7 Actuator K1 3 I R 20 1 w X K1 9 2000 1 2000...

Page 14: ...Wiring needed at system level is shown as a dotted line Capital letters represent primary current Lowercase letters represent secondary current The three breakers M1 M2 and T must all have the same b...

Page 15: ...t Release is enabled only for the first two cycles following an initial circuit breaker closing operation The Making Current Release will trip the circuit breaker instantaneously and flash the Instant...

Page 16: ...Release Circuitry See Section 3 3 Trip Actuator LED Pulse Circuit Battery 3V Ground Alarm Power Supply Optional for 520M Required for 520MC FET Trip See Section 1 2 Trip LED Rating Plug Integrated Pr...

Page 17: ...ective 2 2 2001 Page 17 I L 70C1037H03 Figure 3 2 1 Digitrip 220 LI Figure 3 2 2 Digitrip 520 LSI Figure 3 2 3 Digitrip 520 LSIG Figure 3 2 4 Digitrip 520i WLSIG F T N Courtesy of NationalSwitchgear c...

Page 18: ...e 2 2 2001 Page 18 I L 70C1037H03 Figure 3 3 4 Digitrip 520Mi MWLSIG Figure 3 3 3 Digitrip 520M MLSIG Figure 3 3 1 Digitrip 520M MLSI Figure 3 3 2 Digitrip 520M MLSIA F T N Courtesy of NationalSwitchg...

Page 19: ...Riliiqj PS Shall ft fill Dally 8 l Srtflni L 4 IlfiiA 1 1 Haspmi 9 rnirsTiil 1Rcp llSd I 6 P jnsmi fi II I 3II I QR II Cutler Hammer Digitrip 520MC Cutler Hammer Digitrip 520MCJ 1 14 Msmal PH5 Braird...

Page 20: ...eration set each trip unit protection setting to the values specified by the engineer responsible for the installation The number of settings that must be made is determined by the type of protection...

Page 21: ...There are 8 available Short Delay Current Settings as illustrated in Figure 4 4 Seven settings are in the range from 2 to 10 times Ir REMEMBER Ir is the Long Delay Current Setting The maximum value M...

Page 22: ...und Fault Time Delay Settings 4 9 INCOM Digitrip 520MC Models only INCOM communication to a host computer or a BIM is possible with the Digitrip 520MC unit The address range is 001 through 999 The fac...

Page 23: ...e it and display it in a useful manner Following an over current trip operation the sequence of coded data varies slightly The cause of trip the value the phase or ground current responsible for the t...

Page 24: ...agnum Test Kit Adapter 8779C02G04 can be used to test the trip unit and breaker 5 0 TEST PROCEDURES 5 1 General WARNING DO NOT ATTEMPT TO INSTALL TEST OR PERFORM MAINTENANCE ON EQUIPMENT WHILE IT IS E...

Page 25: ...and serve to power up the display on the 520M trip unit LED s A and B function to represent sufficient battery voltage from both the single Lithium cell and the six Alkaline batteries respectively If...

Page 26: ...ker should not trip and the alarm indicator if one is supplied should not operate Repeat the test using the other two combinations of breaker phases See Figure 5 3 or through a breaker pole and the ne...

Page 27: ...ILL NOT HARM EITHER THE TRIP UNIT OR THE BATTERY BUT WILL DEFEAT THE FUNCTION OF THE BATTERY The replacement battery should be the same type as that already in the trip unit or an equivalent Acceptabl...

Page 28: ...f desired make a copy of the form and attach it to the interior of the breaker cell door or another visible location Figure 8 3 provides a place for recording test data and actual trip values Ideally...

Page 29: ...NGS Circuit No Address Breaker 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...

Page 30: ...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 Fault Setting Ground...

Page 31: ...GROUND FAULT TEST RECORD FORM 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 Te...

Page 32: ...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 the fault the...

Page 33: ...t and last zone is 250 feet 76m A3 A maximum of 20 breakers may be connected in parallel in one zone Main 3200 A Zone 1 C zo 0 5 Sec 1200 A Zl Feeder 1 1600 A Zone Zone 1 2 C G 0 3 Sec 400 A ZO Zl Leg...

Page 34: ...ere actually is a ground fault Find location of the fault On 4 wire residual systems the neutral current sensor may not have the correct ratio or be properly connected Check connections at terminals B...

Page 35: ...to Sections 1 6 and 1 6 1 Wrong Address Check Address See Section 4 9 Check for Aux Power A14 A15 No Power Check Status LED and Transmit LED See Figure 1 1 and Refer to Section 1 6 Check Communication...

Page 36: ...1 WHT ACTA BRN 44 K1 S 4 DOORSWnCH WHENREQ A1 R 1 CSA K1 8 AC MOTCR 4A V 4 4 OB 14 44 A2 10 1 11 2 H 1 RESISTOR WHEN REQ 4 52a INCOM2 ST M4 0 B2 O 4 Bl o 4 OB 10 OB 11 T INCOM 1 For Digitrip 520MC On...

Page 37: ...TIES EXPRESSED OR IMPLIED INCLUD ING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OR WARRANTIES ARISING FROM THE COURSE OF DEALING OR US AGE OF TRADE ARE MADE REGARDING THE INFOR...

Page 38: ...Effective 2 2 2001 Page 38 I L 70C1037H03 Cutler Hammer Pittsburgh PAU S A Effective 1 1 2001 Printed in U S A F T N Courtesy of NationalSwitchgear com...