tender for repairing and overhauling of 132kv line/bus isolators at various 220kv & 132kv substations, under etd, ayodhya - repairing and overhauling of motorised bus/line isolator at 132kv s/s darshan nagar, 132kv s/s akbarpur, 220kv s/s new tanda, with single earth switch work including dismantling of male and female arm, then lifting of post isolator (each isolator cantain 06 nos. post insulator) for changing/greasing of bush/bearing of post insulator main moving pin and applying petroleum jelly on male & female contact after repairing/replacement dismantling of earth link moving and fixed contact and its repairing and apply petruleum jelly on male and female contact after replacement, servicing and overhauling of motor and greasing properly in all moving parts. then reassemble of isolator and setting proper alingment for smooth operation, also cleaning auxiliary contact drum and terminal block works also includes supply and replacement of damaged parts such as jaw blade