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Approvals : CPRI - India
Standards : IEC 1986 - 1987, ANSI C57. 13 - 1978.
S.No.
TYPE REF.
RATED
VOLTAGE
(V)
INSULATION
LEVEL
(kV/kVp)
FAULT/NORMAL
CURRENT
(kA) / (A)
OPERATING MECHANISM
/RATED OPERATING SEQUENCE
1
SFG
7.2
22 / 60
40 / 1250, 2000, 3150
Spring Closing / Tripping 0-3 min -CO-3 min-C0
2
SFG
12
28 / 75
- do -
Spring Closing / Tripping 0-0.3 sec -CO-3 min-C0
3
SFG
36
70 / 170
25 / 1250, 2000, 3150
-do-
The above are typical values. other specs are also feasible.
**This value depends on the capacitance.
Standard. value of creepage is 25 mm / kV
