ABB CKO-5, Manual

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Type CKO Overcurrent Relay 41-101.3A
7
ENERGY REQUIREMENTS
TYPE CKO-8 AND TYPE CKO-9 TIME OVERCURRENT UNITS
VOLT AMPERES
††
CONTINUOUS ONE SECOND POWER AT AT 3 TIMES AT 10 TIMES AT 20 TIMES
AMPERE RATING RATING
†
FACTOR TAP VALUE TAP VALUE TAP VALUE TAP VALUE
RANGE TAP (AMPERES) (AMPERES) ANGLE
ø
CURRENT CURRENT CURRENT CURRENT
0.5 2.7 88 72 2.38 21.0 132 350
0.6 3.1 88 71 2.38 21.0 134 365
0.8 3.7 88 69 2.40 21.1 142 400
0.5-2.5 1.0 4.1 88 67 2.42 21.2 150 440
1.5 5.7 88 62 2.51 22.0 170 530
2.0 6.8 88 57 2.65 23.5 200 675
2.5 7.7 88 53 2.74 24.8 228 800
2 8.0 230 70 2.38 21.0 136 360
2.5 8.8 230 66 2.40 21.1 142 395
3 9.7 230 64 2.42 21.5 149 430
2-6 3.5 10.4 230 62 2.48 22.0 157 470
4 11.2 230 60 2.53 22.7 164 500
5 12.5 230 58 2.64 24.0 180 580
6 13.7 230 56 2.75 25.2 198 660
4 16.0 460 68 2.38 21.3 146 420
5 18.8 460 63 2.46 21.8 158 480
6 19.3 460 60 2.54 22.6 172 550
4-12 7 20.8 460 57 2.62 23.6 190 620
8 22.5 460 54 2.73 24.8 207 700
10 25.0 460 48 3.00 27.8 248 850
12 28.0 460 45 3.46 31.4 292 1020
CKO-11 TIME OVERCURRENT UNITS
VOLT AMPERES
††
CONTINUOUS ONE SECOND POWER AT AT 3 TIMES AT 10 TIMES AT 20 TIMES
AMPERE RATING RATING
†
FACTOR TAP VALUE TAP VALUE TAP VALUE TAP VALUE
RANGE TAP (AMPERES) (AMPERES) ANGLE
ø
CURRENT CURRENT CURRENT CURRENT
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
2.0 7.0 230 32 0.73 6.30 74.0 264
2.5 7.8 230 30 0.78 7.00 78.5 285
3.0 8.3 230 27 0.83 7.74 84.0 309
2-6 3.5 9.0 230 24 0.88 8.20 89.0 340
4.0 10.0 230 23 0.96 9.12 102.0 372
5.0 11.0 230 20 1.07 9.80 109.0 430
6.0 12.0 230 20 1.23 11.34 129.0 504
4.0 14.0 460 29 0.79 7.08 78.4 296
5.0 16.0 460 25 0.89 8.00 90.0 340
6.0 17.0 460 22 1.02 9.18 101.4 378
4-12 7.0 18.0 460 20 1.10 10.00 110.0 454
8.0 20.0 460 18 1.23 11.10 124.8 480
10.0 22.0 460 17 1.32 14.90 131.6 600
12.0 26.0 460 16 1.80 16.30 180.0 720
†
Thermal capacities for short times other than one second maybe calculated on the basis of time being
inversely proportional to the square of the current.
ø
Degrees current lags voltage at tap value current.
††
Voltages taken with Rectox type voltmeter.