GE ICR51A Instructions Manual Download Page 1 | Manualshive

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Courtesy of NationalSwitchgear.com

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Summary of Contents for ICR51A

Page 1: ...INSTRUCTIONS 6EH 1783J PHASE SEQUENCE AND UNDERVOLTAGE RELAYS TYPES ICR53B ICR54A ICR51A ICR53A ICR54B GENERAL ELECTRIC Courtesy of NationalSwitchgear com ...

Page 2: ...R53A Relay Unit Disassembled Front View Figure 1 T i I I 1 I 7 I p i 1 VOLTS TO CLOSE LETT CONTACT 79 OF flATtD VOLTS 34 32 30 28 26 24 22 5 20 s I I l O 3T 3 2 3 u p 10 UJ l 8 10 V V i 6 T t5 W 4 i O 1 I v V V V 2 o SO SO TO 90 too 110 120 9 5 9 5 PER CENT Of RATED VOLTAGE Figure 2A 0203A8302 1 Average Time Characteristic of Relay Type ICR51A COVER PHOTO 8014333 2 Courtesy of NationalSwitchgear c...

Page 3: ...ng of Closed Contact in of Calibration of Open Contact Closing of Open Contact in of Rated 3 Phase Voltage Ave Time Characteristic Curve Relay Type Range of Adjustment Factory Setting Range of Adjustment Factory Setting Figure 2A Figure 2A Figure 2B Figure 2B Figure 3 Figure 3 ICR51A 1 ICR51A 2 ICR53A ICR53B ICR54A ICR54B 75 100 75 100 75 100 75 100 75 100 75 100 75 90 75 100 75 100 75 100 75 100 ...

Page 4: ...0 40 50 70 80 90 100 PER CENT OF RATED VOLTAGE Figure 2B 0376A0950 Average Time Characteristic of Relay Types ICR53A and ICR53B i o VOLTS TO CLOSE LEFT CONTACT 90ft OF RATED VOLTS VOLTS TO CLOSE R I GH T CONTACT 8 0ft OF RATED VOLTS 0 8 TINE TO CLOSE RIGHT CONTACT WHEN VOLTAGE I S REDUCED FROM RATED VOLTS i i TJME TO o o 0 6 CLOSE LEFT CONTACT c _ Ui UJ 0 4 X 0 2 0 60 10 20 30 70 90 100 4 0 80 50 ...

Page 5: ...and 480 volt circuits CONTACT RATINGS The current carrying rating of the contact circuit is determined by whether the relay has a seal in unit and by the tap used on the seal in coil The values for the three possible arrangements are given in the following table Yes Yes Seal In Unit No 0 2 amp 2 0 amps Seal In Unit Tap 0 8 amp 3 5 amps Carry Continuously 2 0 amps Carry for Trip Duty 250 volt of le...

Page 6: ...t a claim should be filed at once with the transportation company and the nearest Sales Office of the General Electric Company promptly notified i 2 3 2 i 3 PHASE SEQUENCE TO Close LEFT CONTACTS 3 1 PHASE SEQUENCE TO CLOSE CONTACTS i HI 7 6 16 7 17 47 47 LEFT UC 1 r L CONTACT 2 r CIRCUIT 47 10 20 Hi 5 yLC s 7 T C 47 6 47 RIGHT UC USE DOTTED CONNECTIONS IF POTENTIAL TRANSFORMERS ARE NOT USED L 1 11...

Page 7: ...No No Yes No No RELAY TYPES The Type ICR51A relay was designed for use in three phase circuits has a single circuit closing contact which opens on undervoltage or reversed phase sequence and a time dial for adjusting the time delay with which the contacts close The relay does not contain a target When the relay is adjusted to open its contacts at 75 of rated voltage the time required to close the ...

Page 8: ...2 6 8 SHORT F NG ER Figure 6 0376A0951 2 Typical External Connections for Relay Types ICR53A and ICR54A Figure 7 0362A0629 2 Internal Connections for Type ICR51A Relay Front View 15 17 21 11 15 17 t t 16 18 I I 20 16 10 A A A v A A A A 20 A 4 A A h Cl C2 i G L E F 1 P yE H 7 T ex A r V j I 1 I V I 10 l 8 6 SHORT F I NGER 3HCRT RMSEK Figure 8 0362A0633 4 Internal Connections for Relay Types ICR53 a...

Page 9: ...is closed when the relay is de energized For this reason these relays are supplied in double end drawout cases The external connections are such that the relay coils are energized when either the upper or lower connection plug is put in place The relay will therefore have time to open its closed contact before the second connection plug can be put in place necessary to have both plugs in place bef...

Page 10: ...ections The electrical connections between the relay units and the case studs are made through spring backed contact fingers mounted in stationary molded inner and outer blocks between which nests a removable connecting plug which completes the circuits The outer blocks attached to the case have the studs for the external connections and inner blocks have the terminals for the internal connections...

Page 11: ...k up value of voltage to the relay and adjust the lower control spring until the left contact just closes The lower control spring is adjusted by inserting the blade of a screwdriver in one of the notches in the periphery of the control spring adjusting ring and turning the adjusting ring counter clockwise to raise the pickup or clock wise to lower the pickup DROPOUT For Relay Types ICR53A ICR53B ...

Page 12: ... the contacts is a function of the pick up and drop out settings It is possible to set any two of the three variables For instance if the pick up value and the drop out time are important then the pick up value can be set as given above The drop out time can be adjusted by adjusting the contact gap until the desired drop out time is obtained The value of drop out voltage will be determined by the ...

Page 13: ...k is Voltage coils are located The torque produced by the Type ICR relay is proportional to the product of the two voltages applied to its two potential circuits and the sine of the angle between the two applied voltages This relationship makes the torque of the relay proportional to the area of the voltage triangle The relay will operate when the area of the voltage triangle is a predetermined va...

Page 14: ...er If possible give the General Electric Company requisition number on which the relay was furnished DANEL LOCATION SEMI PLUSH MTG SURFACE MTG 3 5 16 18 STUDS FOR SURFACE MTG 6 625 168MM L 8 375 212MM i 9 125 232MM 4 10 32 X 3 8 MTG SCREWS STUD NUMBERING 1 0 32 STUDS 9 7 5 3 1 O O O O O O O O O O 10 8 6 v 2 GLASS I b r LL 1 125 29MM 3 oj I76MM BACK VIEW 1 4 DRILL 4 HOLES 6 187 157MM 6MM 5 8 DRILL ...

Page 15: ...7MM 5 8 DRILL 2 HOLES 15MM 2 781 71MM 1 1 75 46MM t I r i 3 50 88MM t t i 0 9 75 247MM 5 562 142MM CUTbUT 1 0 0 0 0 254MM I 4 50 I 114MM 4 T I I 0 o 1 468 37MM 1 J 718 18MM 2 5 0 2 8 4 3 72MM 6MM 2 1 8 2 1 8 5 0 0 12MM TYPICAL 5MM 5MM 5 2 5 5 6 8 7 133MM PANEL 144MM 3 4 DRILL 20 HDLES 19MM T PANEL DRILLING FDR SEMI FLUSH MOUNTING FRONT VIEW PANEL DRILLING FOR SURFACE MOUNTING FRONT V I E W C A 5 1...

Page 16: ...å å å å 3RZHU 0DQDJHPHQW 215 Anderson Avenue Markham Ontario Canada L6E 1B3 Tel 905 294 6222 Fax 905 201 2098 www ge com indsys pm Courtesy of NationalSwitchgear com ...

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