36kV PRIMARY SUBSTATION SWGR; TRANSFORMER SWGR UNIT;36kV;1250A; 31.5kA;1600 A BUS;CONTROL GEAR ASSEMBLY; SUITS 110V DC AUX SUPPLY INC 3 PHASE BUS VOLTAGE TRANSFORMER;CURRENT TRANSFORMERS FOR TRANSFORMER & BZ HI and LI protection schemes (3 cores). Associated wiring to the protection relays;