Answer Posted / vikramsenareddy

HT (High Tension) substation means if substation is
suppluing power to another substation is called HT
substation.(220/132 KV)

LT (low tension)substation means if substation is supplying
power to domestic and industrial usage is called LT SS. It
rating for domestic (132/11/440/0.240 KV) for industrial
(132/66/33) KV.

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