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41-116.1C

8

COV Voltage Controlled Overcurrent Relay

COV-6 OVERCURRENT UNITS

Ampere

Range

Tap

Continuous

Rating *

(Amperes)

One Second

Rating *

(Amperes Ø

Power
Factor

Angle Ø

Volt Amperes * *

At

Tap Value

Current

At 3 Times

Tap Value

Current

At 10 Times

Tap Value

Current

At 20 Times

Tap Value

Current

0.5/2.5

0.5
0.6
0.8
1.0
1.5
2.0
2.5

2.7
3.1
3.7
4.1
5.7
6.8
7.7

88
88
88
88
88
88
88

69
68
67
66
62
60
58

3.92
3.96
3.96
4.07
4.19
4.30
4.37

20.6
20.7
21.0
21.4
23.2
24.9
26.2

103
106
114
122
147
168
180

270
288
325
360
462
548
630

2/6

2
2.5
3
3.5
4
5
6

8.0
8.8
9.7

10.4
11.2
12.5
13.7

230
230
230
230
230
230
230

67
66
64
63
62
59
57

3.88
3.90
3.93
4.09
4.12
4.20
4.38

21.0
21.6
22.1
23.1
23.5
24.8
26.5

110
118
126
136
144
162
183

308
342
381
417
448
540
624

4/12

4
5
6
7
8
10
12

16.0
18.8
19.3
20.8
22.5
25.0
28.0

460
460
460
460
460
460
460

65
63
61
59
56
53
47

4.00
4.15
4.32
4.37
4.40
4.60
4.92

22.4
23.7
25.3
26.4
27.8
30.1
35.6

126
143
162
183
204
247
288

376
450
531
611
699
880

1056

ENERGY REQUIREMENTS

COV-7 OVERCURRENTS UNITS

Ampere

Range

Tap

Continuous

Rating 

(Amperes)

One Second

Rating *

(Amperes)

Power

Factor

Angle Ø

Volt Amperes * *

At

Tap Value

Current

At 3 Times

Tap Value

Current

At 10 Times

Tap Value

Current

At 20 Times 

Tap Value

Current

0.5/2.5

0.5
0.6
0.8
1.0
1.5
2.0
2.5

2.7
3.1
3.7
4.1
5.7
6.8
7.7

88
88
88
88
88
88
88

68
67
66
64
61
58
56

3.88
3.93
3.93
4.00
4.08
4.24
4.38

20.7
20.9
21.1
21.6
22.9
24.8
25.9

103
107
114
122
148
174
185

278
288
320
356
459
552
640

2/6

2
2.5
3
3.5
4
5
6

8
8.8
9.7
10.4
11.2
12.5
13.7

230
230
230
230
230
230
230

66
63
63
63
61
59
58

4.06
4.07
4.14
4.09
4.34
4.40
4.62

21.3
21.8
22.5
23.1
23.8
25.2
27

111
120
129
136
149
163
183

306
342
366
417
448
530
624

4/12

4
5
6
7
8
10
12

16
18.8
19.3
20.8
22.5
25
28

460
460
460
460
460
460
460

64
61
60
58
55
51
46

4.24
4.30
4.62
4.69
4.80
5.20
5.40

22.8
24.2
25.9
27.3
29.8
33
37.5

129
149
168
187
211
260
308

392
460
540
626
688
860
1032

*

Thermal capacities for short times other than one second may be 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 high impedance type voltmeter.

Summary of Contents for COV-6

Page 1: ...ave been specially designed and tested to establish their suitability for Class 1E appli cations in accordance with the ABB Relay Division program for Class 1E Qualification Testing as detailed in Bul...

Page 2: ...g is held in position by a spring type clamp The spring adjuster is located on the underside of the bridge and is attached to the moving contact arm by a spiral spring The spring adjuster is also held...

Page 3: ...ll respond to multi ples of tap value currents in accordance with the var ious typical time current curves The factory adjustment of the CO unit contacts provides a contact follow Where circuit breake...

Page 4: ...By turning the time dial move the moving contacts until they deflect the stationary con tact to a position where the stationary contact is resting against its backstop The index mark located on the m...

Page 5: ...er trips and the target drops Then release the contacts and observe that the reset is smooth and positive If an additional time check is desired pass second ary current through the relay and check the...

Page 6: ...ntil the operation time corresponds to the value of Table 1 For type COV 11 relay only the 1 30 times tap value operating time from the number 6 time dial position is 54 9 5 seconds It is impor tant t...

Page 7: ...pedestal and moving the ICS in the downward position a Contact Wipe Adjust the stationary contact so that both stationary contacts make with the moving contacts simultaneously and wipe 1 64 to 3 64 w...

Page 8: ...Y REQUIREMENTS COV 7 OVERCURRENTS UNITS Ampere Range Tap Continuous Rating Amperes One Second Rating Amperes Power Factor Angle Volt Amperes At Tap Value Current At 3 Times Tap Value Current At 10 Tim...

Page 9: ...Range Tap Continuous Rating Amperes One Second Rating Amperes Power Factor Angle VOLT AMPERES At Tap Value Current At 3 Times Tap Value Current At 10 Times Tap Value Current At 20 Times Tap Value Cur...

Page 10: ...COV Voltage Controlled Overcurrent Relay Telephone Relay T Overcurrent Unit CO Indicating Contactor Switch ICS Figure 1 Type COV Relay without case 1342D82A01 Photo Voltage Unit Adjustable Resistor Vo...

Page 11: ...41 116 1C 11 COV Voltage Controlled Overcurrent Relay Sub 6 3526A40 Figure 2 Internal Schematic of the Type COV Relay in the Type FT 21 Case For Class 1E Application...

Page 12: ...NORMAL CURRENT IN PERCENT OF FULL LOAD The Trip Area May be Changed as Follows The line bc may be moved in the direction of arrow y by changing the voltage unit setting The line ab may be moved in the...

Page 13: ...41 116 1C 13 COV Voltage Controlled Overcurrent Relay Figure 4 Typical 50 and 60 hertz Time Curves of COV 6 Overcurrent Unit 619511 Sub 1...

Page 14: ...41 116 1C 14 COV Voltage Controlled Overcurrent Relay Figure 5 Typical 50 and 60 hertz Time Curves of COV 7 Overcurrent Unit 619512 Sub 1...

Page 15: ...41 116 1C 15 COV Voltage Controlled Overcurrent Relay Figure 6 Typical 50 and 60 hertz Time Curves of COV 8 Overcurrent Unit 619513 Sub 1...

Page 16: ...41 116 1C 16 COV Voltage Controlled Overcurrent Relay Figure 7 Typical 50 and 60 hertz Time Curves of COV 9 Overcurrent Unit 619514 Sub 1...

Page 17: ...41 116 1C 17 COV Voltage Controlled Overcurrent Relay Figure 8 Typical 50 and 60 hertz Time Curves of COV 11 Overcurrent Unit 619515 Sub 1...

Page 18: ...41 116 1C 18 COV Voltage Controlled Overcurrent Relay Figure 9 Diagram of Test Connections of COV Relays 1582C85 Sub 6...

Page 19: ...41 116 1C 19 COV Voltage Controlled Overcurrent Relay Figure 10 External Schematic of the COV Relay on a Generator Sub 2 3531A56...

Page 20: ...S A ABB Automation Inc 4300 Coral Ridge Drive Coral Springs Florida 33065 TEL 954 752 6700 FAX 954 345 5329 visit our website at www abbus com papd Figure 11 Outline and Drilling Plan for the Type COV...

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