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T Y P E CO CI RCU I T OP E N I NG R E L AY
CONTINUOUS
AMPERE
RATING
RANGE
TAP
(AMPERES)
(0.5
(0.6
(0.8
0.5/2.5
(1.0
( 1.5
(2.0
(2.5
(2
(2.5
(3
2/6
(3.5
(4
(5
(6
(4
(5
(6
4/12
(7
(8
( 1 0
( 1 2
CONTINUOUS
AMPERE
RANGE
TAP
(AMPERES)
(0. 5
(0.6
(0.8
0. 5/2.5
( 1. 0
(1. 5
(2.0
( 2 . 5
( 2
( 2 . 5
(3
2/6
(3.5
(4
(5
(6
(4
(5
4/12
(6
(7
(8
( 1 0
(12
*
Thermal capacities for short tim es other than on e second may be calculat ed on th e basis of tim e b e ing inversely proportional to th e
square of the current.
cp D egre e s current lags voltag e at tap value curr ent.
* *
Voltag es taken with R ectox type voltm et er.
4
E NE RGY R EQ U I R EME N TS
C O · S L O N G T I M E A N D C 0 -6 D E F I N IT E M I N IM U M T I M E
ONE SECOND
POWER
RATING*
FACTOR
( AMPERES)
ANGLE
2 . 7
88
69
3 . 1
88
68
3 . 7
88
67
4 . 1
88
66
s . 7
88
62
6.8
88
60
7. 7
88
58
8
230
67
8.8
230
66
9.7
230
64
10.4
230
63
1 1 . 2
230
62
1 2.5
230
59
13.7
230
57
16
460
65
18.8
460
63
19.3
460
6 1
20 . 8
460
59
22.5
460
56
25
460
53
28
460
47
C 0 ·7 M O D E R A T E L Y I N V E R S E T I M E R E L A Y
ONE SECOND
POWER
FACTOR
RATING
RATING*
(AMPERES)
ANGLE
2 . 7
88
3 . 1
88
88
3 . 7
88
4 . 1
5. 7
88
88
6 . 8
88
7. 7
230
8
8 . 8
230
9.7
230
230
10.4
11.2
230
12.5
230
230
13.7
16
460
18. 8
460
460
19.3
20 . 8
460
2 2 . 5
460
460
2 5
28
460
R E LA Y S
VOLT AMPERES*
3
AT
AT
TIMES
TAP VALUE
TAP VALUE
¢
CURRENT
CURRENT
3.92
20.6
3.96
20.7
3.96
2 1
4.07
2 1 .4
4 . 19
23.2
4.30
24.9
4.37
26.2
3.88
21
3.87
2 1 . 6
3.93
22. 1
4 . 09
23. 1
4.08
23.5
4 . 20
24.8
4.38
26.5
4.00
22.4
4 . 15
23.7
4 . 32
25.3
4.3 5
26.4
4.40
27.8
4 . 60
30 . 1
4 .92
35.6
VOLT AMPERES* *
3
AT
AT
TIMES
TAP VALUE
TAP VALUE
¢
CURRENT
CURRENT
68
3.88
20.7
67
3.93
20.9
66
3.93
21. 1
64
4.00
2 1 . 6
61
4.08
22.9
58
4 . 24
24.8
56
4 .38
25.9
4.06
66
2 1 .3
63
4.07
2 1 .8
63
4.14
22.5
62
4.34
23.4
6 1
4 .34
23.8
59
4 .40
2 5 . 2
58
4 . 62
27
64
4 . 24
22.8
61
4.30
24.2
60
4 . 62
25.9
58
4 . 69
27.3
55
4 . 80
29 . 8
51
5 . 20
33
5.40
37.5
46
•
10
20
AT
TIMES
AT
TIMES
TAP VALUE
TAP VALUE
CURRENT
CURRENT
270
103
106
288
114
325
122
360
462
147
168
548
180
630
1 10
308
1 1 8
342
126
381
136
417
144
448
162
540
183
624
126
376
143
450
162
53 1
183
6 1 1
204
699
247
880
288
1056
20
10
AT
TIMES
AT
TIMES
TAP VALUE
TAP VALUE
CURRENT
CURRENT
103
278
107
288
1 14
320
1 22
356
148
459
174
552
185
640
1 1 1
306
120
342
1 29
366
141
4 1 3
1 4 9
448
163
530
183
624
1 29
392
149
460
168
540
187
626
2 1 1
688
260
860
308
1032
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