T
able D. - Cable d-c test voltage guide (continued)
Part 4
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.
Conductor
size
(AWG or
kcmil)
Round and
sector
Conductor
insulation
thickness
mils mm
Multiple
conductor
shielded*
27 20
28 21
29 -
30 22
31 23
32 24
33 -
34 25
1-3/0 R
2/0-3/0 S
4/0-1000R
4/0-1000S
1/0-3/0 R
3/0 S
4/0-1000R
4/0-1000S
1/0-3/0 R
3/0 S
4/0-1000R
4/0-1000S
1/0-3/0 R
3/0 S
4/0-1000R
4/0-1000S
1/0-1000R
3/0-1000S
1/0-1000R
250-1000S
2/0-l000R
250-1000S
2/0-IO00R
250-1000R
270 6.86
270 6.85
255 5.48
255 6.48
280 7.11
280 7.11
265 6.73
265 6.73
285 7.24
285 7.24
275 6.99
275 6.99
285 7.24
285 7.24
280 7.11
280 7.11
290 7.37
290 7.37
300 7.62
300 7.62
310 7.75
310 7.75
320 8.13
320 8.13
270 6.85
255 5.48
255 6.48
280 7.11
280 7.11
265 6.73
265 6.73
285 7.24
285 7.24
275 6.99
275 6.99
285 7.24
285 7.24
280 7.11
280 7.11
290 7.37
290 7.37
300 7.62
300 7.62
310 7.75
310 7.75
320 8.13
320 8.13
79.5
79.5
79.5
79.5
82.9
82.9
82.9
82.9
86.4
86.4
86.4
86.4
88.1
88.1
88.1
88.1
91.6
91.6
95.0
95.0
98.5
98.5
79.5
79.5
82.9
82.9
82.9
82.9
86.4
86.4
86.4
86.4
88.1
88.1
88.1
88.1
91.6
91.6
95.0
95.0
98.5
98.5
102.0
102.0
102.0
*All test values rounded off to 1 decimal place, and voltages are
60 percent of factory test.
60 percent of factory test.
41