You Searched for - is 3231 : part 3 : sec 5
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IS 3231 : Part 3 : Sec 5 : 1987
(Reaffirmed Year :
2011
)
Electrical relays for power system Protection: Part 3 Requirements for particular group of relays, Section 5 Impedance measuring relays
Technical Committee :
ETD 35
Superseeded by :