Tender for the work of complete overhauling/servicing of mechanism drive with complete assemblies and main interrupter and support poles of 03 nos. 420KV, type- 3AT4 BHEL make Breakers of 400KV HVDC Ckt. No.-1, TBC-2 bay, 400KV HVDC ckt. no.- 2 bay along with supply of required spares at 400KV Substation, GCR, MSETCL, Chandrapur