2nd Call Notice Bi- Annual Maintenance Contract for repairing, servicing with supply of spare parts suitable for 400 kV Pantograph Isolators, Centre Break Line Isolator & Earth Switch Isolator as and when required at 400 kV R. S. Dn, Khadka, 400 kV R. S. Dn, Dhule & 400 kV R. S. Dn, Deepnagar under EHV ( O & M ) Circle, Khadka- Bhusawal