You Searched for - IS 3231 : Part 2 : Sec 3
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IS 3231 : Part 2 : Sec 3 : 1987
(Reaffirmed Year :
2011
)
Electrical relays for power system protection: Part 2 Requirements for principal families, Section 3 General requirements for thermal rlays
Technical Committee :
ETD 35
Superseeded by :