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CONTINUOUS
AMPERE
RATING
RANGE
TAP
(AMPERES)
0 . 5
0 . 9 1
0.6
0 . 96
0.8
1 . 18
0.5/2.5
1 . 0
1 . 37
1 . 5
1 . 95
2 . 0
2 . 24
2.5
2 . 50
2.0
3 . 1
2.5
4.0
3.0
4 . 4
2/6
3 . 5
4.8
4 . 0
5 . 2
5.0
5.6
6.0
6 . 0
4.0
7.3
5.0
8 . 0
6.0
8.8
4 / 1 2
7 . 0
9.6
8.0
10 . 4
10.0
1 1 . 2
1 2. 0
12.0
ERE
CONTINuOUS
AMP
RA11NG
RANGE
TAP
(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
(10
(12
t
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.
¢
Degrees current lags voltage at tap value current.
t t
6
V oltages taken with Recto" type voltmeter.
ENERGY REQUIREMENTS
TYP E I RV-2 TIM E OV E RCURREN T U N I TS
ONE SECOND
POWER
RATING t
FACTOR
(AMPERES)
ANGLE ¢
28
58
28
57
28
5 3
50
28
28
40
28
36
29
28
1 10
59
uo
55
1 10
5 1
1 10
47
1 10
45
1 10
4 1
1 1 0
37
230
65
50
230
230
47
230
46
230
43
230
37
230
34
I RV-5,
TI ME O V ERCURREN T U N I T S
I RV -6,
ONE SECOND
POWER
t
RATING
FACTOR
ANGLE
(AMPERES)
2. 7
8 8
69
3.1
88
68
3. 7
88
67
88
66
4.1
88
62
5.7
88
60
6.8
88
58
7. 7
8
230
67
8.8
230
66
9.7
230
64
10.4
230
63
11.2
230
62
12.5
230
59
230
57
13.7
16
460
65
18.8
460
63
19.3
460
61
460
59
20.8
22.5
460
56
25
460
53
47
28
460
VOLT AMPERES t t
AT
AT
TIMES
3
TAP VALUE
TAP VALUE
CURRENT
CURRENT
4.8
39.6
4.9
39.8
5.0
42.7
5.3
45.4
6 . 2
54.4
7 . 2
65.4
7.9
73.6
5.04
38.7
5. 13
39. 8
5.37
42.8
5.53
4 2 . 8
5.72
46.0
5.90
50 . 3
6.54
54.9
4.92
39.1
5 . 20
42.0
5 . 34
44. 1
5.35
45. 8
5.86
49.9
6 . 6
55.5
7.00
62.3
VOLT AMPERES
3
AT
AT
TIMES
TAP VALUE
TAP VALUE
¢
CURRENT
CURRENT
20.6
3.92
3.96
20,7
3.96
21
4.07
21.4
4.19
23.2
4.30
24.9
4.37
26.2
3.88
21
3.87
21.6
3.93
22.1
23.1
4.09
4.08
23.5
4.20
24.8
26.5
4.38
4.00
22.4
4.15
23.7
4.32
25.3
4.27
26.4
4.40
27.8
4.60
30.1
4.92
35.6
AT
TIMES
AT
TIMES
10
20
TAP VALUE
TAP VALUE
CURRENT
CURRENT
256
790
270
85 1
308
1024
348
1 2 20
435
1740
580
2280
700
2850
262
800
280
920
3 1 2
1008
3 29
1120
360
1 2 16
4 20
1500
474
1800
268
848
305
1020
330
1 1 28
364
1260
400
1408
1720
470
2064
528
t
t
10
20
AT
TIMES
AT
TIMES
TAP VALUE
TAP VALUE
CURRENT
CURR ENT
103
270
106
288
114
325
122
360
147
462
168
548
180
630
110
308
118
342
126
381
136
417
144
448
162
540
183
624
126
376
143
450
162
531
183
611
204
699
247
880
288
1056
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