IS: 3231 (Part 2/Sec. 2) - 1987 (Reaffirmed 1992); Specification for electrical relays for power system protection Part 2 requirements for principal families Section 2 general requirements for measuring relays
IS: 3231 (Part 2/Sec. 2) - 1987 (Reaffirmed 1992); Specification for electrical relays for power system protection Part 2 requirements for principal families Section 2 general requirements for measuring relays
- New Delhi BIS 1987
- 35p
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