supply of control and relay panel for 25 kv ac tss including numerical type protection relays.control and relay panel for 25 kv ac tss including numerical type protection relays., control and relay panel for 25 kv ac tss including numerical type protection relays for traction transformer, ohe protection, 25 kv shunt capacitor bank and transmission line for 25 kv ac tss. numerical integrated transformer protection relays ( oc+ref ) for primary side ( type-antp202hv ) , on indian railways. spec: ti / spc / psi / protct / 6071 with a & c slip no. 1, str: ti / str / 001 ( rev.2 ) and ti / str / 002 ( rev.2 ) . [ warranty period: 30 months after the date of delivery ]