Tender For supply of one time maintenance off 315kva transformer , supply and installation of horizontal 3 phase 11kv 400amp gang operated air break switch , supply and installation of 1000a 4 pole air circuit breaker , supply and installation of copper bonded chemical earth pits , supply and installation of copper plate earth pits , supply and installation of shunt power capacitors of the self healing type for ac systems , supply and installation of automatic power factor controller , supply and installation of lighting arresters for 11kv sub station