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I.L 40-100J

28

Figure 17. External Schematic of HiLo CO Relay for Phase and Ground Overcurrent

Protection on a Three Phase System

Figure 18. External Schematic of HiLo CO Relay with ACS Unit for Phase and Ground

Protection on a Three Phase System

Sub 1
3527A93

Sub 3
182A755

DEVICE NUMBER CHART

51 - OVERCURRENT RELAY, TYPE CO

51-N - GROUND OVERCURRENT TELAY, TYPE CO

52 - POWER CIRCUIT BREAKER

52A - BREAKER AUXILIARY CONTACT

ICS - INDICATING CONTACTOR SWITCH

TC - BREAKER TRIP COIL

NEG.
OR
POS.

ICS

ICS

NEG.
OR
POS.

Courtesy of NationalSwitchgear.com

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Summary of Contents for CO

Page 1: ... purchaser regarding this particular installation operation of maintenance of this equipment the local Asea Brown Boveri representative should be contacted 41 100J The following describes typical applications of the CO Relay RELAY TYPE TIME CURVE TYPICAL APPLICATIONS CO 2 Short 1 Differential protection where saturation of current transformers is not ex pected or where delayed tripping is permissi...

Page 2: ... device A magnetic armature to which leaf spring mounted contacts are attached is attracted to the magnetic core upon energization of the switch When the switch closes the moving contacts bridge two stationary contacts completing the trip circuit Al so during the operation two fingers on the armature deflect a spring located on the front of the switch which allows the operation indicator target to...

Page 3: ...tting and a specified time of operation at some current multiple of the tap setting e g 4 tap setting 2 time dial posi tion or 4 tap setting 0 6 seconds at 6 times tap value current The tap setting is the minimum current re quired to make the disc move To provide selective circuit breaker operation a min imum coordinating time of 0 3 seconds plus circuit breaker time is recommended between the rel...

Page 4: ...ec ommended that the IIT be set on the higher tap where there is a choice of tap settings For example for a 20 amperes setting use the 20 to 40 tap rather than the 6 to 20 tap 5 5 ac Auxiliary Switch ACS The core screw must be adjusted to the value of pickup current desired 6 ADJUSTMENTS MAINTENANCE The proper adjustments to insure correct operation of this relay have been made at the factory Upon...

Page 5: ...le from the top of the ACS unit determines the pickup value The mak ing of the contacts and target indication should occur at approximately the same instant Position the sta tionary contact for a minimum of 1 32 wipe The bridging moving contact should touch both station ary contacts simultaneously Apply sufficient current to operate the ACS The op eration indicator target should drop freely Routin...

Page 6: ...5 If the operating time at 1 3 times tap value is not within these limits a minor adjustment of the control spring will give the correct operating time without any undue effect on the minimum pick up of the relay This check is to be made after the 2 times tap value adjustment has been made Apply the indicated current per Table I for the elec tromagnet plug adjustment e g CO 8 20 times tap value an...

Page 7: ...ALIBRATION DATA 50 AND 60 Hertz PERMANENT MAGNET ADJUSTMENT RELAY TYPE TIME DIAL POSITION CURRENT MULTIPLES OF TAP VALUE OPERATING TIME SECONDS CO 2 CO 5 CO 6 CO 7 CO 8 CO 9 CO 11 6 6 6 6 6 6 6 3 2 2 2 2 2 2 0 57 37 80 2 46 4 27 13 35 8 87 11 27 ELECTROMAGNET PLUGS CO 2 CO 5 CO 6 CO 7 CO 8 CO 9 CO 11 6 6 6 6 6 6 6 20 10 20 20 20 20 20 0 22 14 30 1 19 1 11 1 11 0 65 0 24 For 50 Hz CO 11 relay 20 ti...

Page 8: ...I L 40 100J 8 Courtesy of NationalSwitchgear com ...

Page 9: ...5 0 42 7 308 1024 0 5 2 5 1 0 1 37 28 50 5 3 45 4 348 1220 1 5 1 95 28 40 6 2 54 4 435 1740 2 0 2 24 28 36 7 2 65 4 580 2280 2 5 2 50 28 29 7 9 73 6 700 285 1 0 1 65 28 55 4 6 37 3 266 895 1 2 1 90 28 54 4 6 38 0 280 1000 1 5 2 20 28 53 4 8 40 0 310 1150 2 0 3 30 28 54 4 8 40 5 315 1180 2 5 4 00 56 56 4 7 39 2 282 970 3 0 5 00 56 55 4 9 40 2 295 1050 3 5 5 50 56 54 4 9 41 0 312 1125 1 12 4 0 6 50 ...

Page 10: ... 0 5 2 7 88 68 3 88 20 7 103 278 0 6 3 1 88 67 3 93 20 9 107 288 0 8 3 7 88 66 3 93 21 1 114 320 0 5 2 5 1 0 4 1 88 64 4 00 21 6 122 356 1 5 5 7 88 61 4 08 22 9 148 459 2 0 6 8 88 58 4 24 24 8 174 552 2 5 7 7 88 56 4 38 25 9 185 640 1 0 4 5 88 68 3 86 20 6 100 265 1 2 5 5 88 67 3 82 20 4 104 270 1 5 6 0 88 66 3 92 21 2 110 300 2 0 7 7 88 65 3 90 21 8 117 312 2 5 9 5 88 64 3 90 21 8 123 360 3 0 10 ...

Page 11: ...RSE TIME RELAY 0 5 1 7 56 36 0 72 6 54 71 8 250 0 6 1 9 56 34 0 75 6 80 75 0 267 0 8 2 2 56 30 0 81 7 46 84 0 298 0 5 2 5 1 0 2 5 56 27 0 89 8 30 93 1 330 1 5 3 0 56 22 1 13 10 04 115 5 411 2 0 3 5 56 17 1 30 11 95 136 3 502 2 5 3 8 56 16 1 48 13 95 160 0 610 1 0 3 5 56 30 0 82 7 4 82 300 1 2 4 0 56 29 0 90 8 0 87 324 1 5 5 5 56 26 0 97 8 6 93 350 2 0 8 5 56 25 1 00 8 9 96 380 2 5 10 0 56 24 1 10 ...

Page 12: ...rnal Schematic of the Double Trip Relay Without IIT Sub 3 57D4524 ICS INDICATING CONTACTOR SWITCH INDUCTION UNIT RED HANDLE TEST SWITCH CURRENT TEST JACK CHASSIS OPERATED SHORTING SWITCH TERMINAL Courtesy of NationalSwitchgear com ...

Page 13: ...I L 41 100J 13 Figure 2 Internal Schematic of the Double Trip Relay With IIT Sub 1 3498A03 Courtesy of NationalSwitchgear com ...

Page 14: ...I L 40 100J 14 Figure 3 Internal Schematic of the Single Trip Relay Without IIT Sub 3 57D4523 Courtesy of NationalSwitchgear com ...

Page 15: ...I L 41 100J 15 Figure 4 Internal Schematic of the Single Trip Relay With IIT Sub 1 3498A02 Courtesy of NationalSwitchgear com ...

Page 16: ...I L 40 100J 16 Figure 5 Internal Schematic of Double Trip Relay With ITT to Separate Terminals Sub 1 3508A73 Courtesy of NationalSwitchgear com ...

Page 17: ...I L 41 100J 17 Figure 6 Internal Schematic of the Single Trip Relay With ITT Contacts Wired to Two Separate Terminals Sub 2 3516A07 Courtesy of NationalSwitchgear com ...

Page 18: ...I L 40 100J 18 Figure 7 Internal Schematic of the Single Trip Relay With an ACS Unit Sub 6 183A608 Courtesy of NationalSwitchgear com ...

Page 19: ...I L 41 100J 19 Figure 8 Internal Schematic of the Single Trip Relay With an ACS Unit and IIT Sub 4 3515A06 Courtesy of NationalSwitchgear com ...

Page 20: ...I L 40 100J 20 Figure 9 Internal Schematic of the Single Trip Relay With an ACS Unit and with IIT Contacts Sub 1 3524A37 Wired to Two Separate Terminals Courtesy of NationalSwitchgear com ...

Page 21: ...I L 41 100J 21 Figure 10 Typical Time Curve of the Type CO 2 Relay Curve 619584 MULTIPLES OF TAP VALUE Courtesy of NationalSwitchgear com ...

Page 22: ...I L 40 100J 22 Figure 11 Typical Time Curve of the Type CO 5 Relay Curve 418245 Courtesy of NationalSwitchgear com ...

Page 23: ...I L 41 100J 23 Curve 418246 Figure 12 Typical Time Curve of the Type CO 6 Relay Courtesy of NationalSwitchgear com ...

Page 24: ...I L 40 100J 24 Figure 13 Typical Time Curve of the Type CO 7 Relay Curve 418247 Courtesy of NationalSwitchgear com ...

Page 25: ...I L 41 100J 25 Figure 14 Typical Time Curve of the Type CO 8 Relay Curve 418248 Courtesy of NationalSwitchgear com ...

Page 26: ...I L 40 100J 26 Figure 15 Typical Time Curve of the Type CO 9 Relay Curve 418249 Courtesy of NationalSwitchgear com ...

Page 27: ...I L 41 100J 27 Figure 16 Typical Time Curve of the Type CO 11 Relay Sub 2 288B655 Courtesy of NationalSwitchgear com ...

Page 28: ... CO Relay with ACS Unit for Phase and Ground Protection on a Three Phase System Sub 1 3527A93 Sub 3 182A755 DEVICE NUMBER CHART 51 OVERCURRENT RELAY TYPE CO 51 N GROUND OVERCURRENT TELAY TYPE CO 52 POWER CIRCUIT BREAKER 52A BREAKER AUXILIARY CONTACT ICS INDICATING CONTACTOR SWITCH TC BREAKER TRIP COIL NEG OR POS ICS ICS NEG OR POS Courtesy of NationalSwitchgear com ...

Page 29: ...I L 41 100J 29 Figure 19 Siagram of Test Connections for the Type CO Relay Sub 3 3503A43 Courtesy of NationalSwitchgear com ...

Page 30: ... DOUBLE TRIP 3498A03 FIG 2 A13 A33 5 2 5 2 48 DOUBLE TRIP WITH IIT CONTACTS WIRED 3508A73 TO SEPARATE TERMINALS FIG 5 A14 A34 1 12 6 144 DOUBLE TRIP WITH IIT CONTACTS WIRED 3508A73 TO SEPARATE TERMINALS FIG 5 A15 A35 5 2 5 6 144 DOUBLE TRIP WITH IIT CONTACTS WIRED 3508A73 TO SEPARATE TERMINALS FIG 5 A16 A36 1 12 2 48 DOUBLE TRIP WITH IIT CONTACTS WIRED 3508A73 TO SEPARATE TERMINALS FIG 5 A17 5 2 5...

Page 31: ...5A06 A16 CO 11 1 12 1 0 6 144 SINGLE TRIP 3515A06 A18 CO 8 1 12 5 6 144 SINGLE TRIP 3515A06 A19 CO 11 5 2 5 5 SINGLE TRIP 183A680 A20 CO 7 1 12 1 0 SINGLE TRIP 183A680 A23 CO 8 5 2 5 1 0 SINGLE TRIP 183A680 A24 CO 5 5 2 5 1 0 SINGLE TRIP 183A680 A25 CO 11 1 12 15 6 144 SINGLE TRIP 3515A06 A26 CO 8 5 2 5 15 2 48 SINGLE TRIP 3515A06 A27 CO 5 1 12 15 SINGLE TRIP 183A680 A28 CO 8 1 12 0 5 2 48 SINGLE ...

Page 32: ...I L 40 100J 32 Figure 22 Outline and Drilling Plan for the Type CO Relay Denotes Change Since Previous Issue Sub 20 57D7900 Courtesy of NationalSwitchgear com ...

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