Table D. - Cable d-c test voltage guide (continued)
Part 3
Solid-type Impregnated-paper Insulated Lead Covered
Cable Specifications
AEIC loth Edition, April 1968
d-c/a-c ratio = 2.4 at 25
E
C
Rated kV
phase
to phase
Gr. Ung
Gr. Ung
Conductor
size
(AWG or
kcmil)
Conductor
insulation
thickness
mils mm
Single conductor shielded
and nonshielded*
25
-
26
26
19
27
20
28
21
29
-
30
22
31
23
32
24
33
-
34
25
1-2/0
3/0-4000
1-2/0
3/0-4000
1-3/0
4/0-4000
1/0-3/0
4/0-4000
1/0-3/0
4/0-4000
1/0-3/0
4/0-4000
1/0-4000
1/0-4000
2/0-4000
1/0-4000
2/0-4000
2/0-4000
255
6.48
240
6.10
260
6.60
245
6.22
270
6.86
255
6.48
280
7.11
265
6.73
285
7.24
275
6.99
285
7.24
280
7.11
290
7.37
300
7.62
310
7.75
320
8.13
74.3
74.3
76.0
76.0
79.5
79.5
82.9
82.9
86.4
86.4
88.1
74.3
76.0
76.0
79.5
79.5
82.9
82.9
86.4
86.4
88.1
88.1
91.6
95.0
98.5
98.5
102.0
*All test values rounded off to 1 decimal place, and voltages are
60 percent of factory test.
60 percent of factory test.
38