Annual Maintenance of different Electrical Installation works Under IAHVB , Belgachia , Kolkata, for the year-2025-26------Repairing, replacing, servicing and overhauling of Electrical Panel and retrofitting of tilted transformers.

Supply and Installation of MCCB Supply and installation of a 440 V, 630 A, 4-pole MCCB with 50 kA breaking capacity in place of the existing deteriorated ACB. (Approved makes: Legrand / ABB / L&T.) This item includes supply and complete installation of the MCCB, along with all necessary arrangements and modifications within the existing panel to ensure proper and safe installation. Technical features: a) Protection against overload b) Protection against short circuits c) Inbuilt instantaneous protection d) Protection against ground fault e) Breaking capacity: 50 kA f) Inbuilt display for current metering with Class-1 accuracy g) Internal battery with battery measurement function h) Communication-ready via COMM port i) Logical selectivity ready (Zone Selective Interlocking) j) Dynamic selectivity as per selectivity charts k) Inbuilt USB port for software diagnosis l) Switchable thermal memory m) Suitable for isolation

Disconnection and dismentling the existing ACB Very carefully incl. necessary fabrication work for proper position of MCCB incl. necessry painting etc as required.

Supply and fixing of Incoming & Outgoing Speders link ( 4 nos each side)

Supply and drawing 1100 Volt grade 95 sq.mm Single core multistrand copper cable

Finishing the end of 95 .sq.mm Copper cable by crimping method.

Dis-connection and dismentling of In-coming and outgoing cable of 2 nos 750 KVA Trans former & 3 nos HT VCB ( 10 sets) very carefully and shifting the cable at safe site for work clearence as per instruction of EIC

Re-connection of In-coming and outgoing cable of 2 nos 750 KVA Trans former & 3 nos HT VCB ( 10 sets) very carefully incl. S&F necessary nuts & washer etc as required as per site condition

Lifting & Shifting including loading and un-loading 2 nos 750 KVA Trans former & 3 nos HT VCB ( 10 sets) very carefully as per instruction of EIC ( Two times)

Supply and fixing of 15mm thick rubber mat in front of the Transformer & HT Gear ( Size 8ft x2 ft)

S& fixing MS chequered plate having size of (2mtr X 1 mtr) 8mm thick for covering the cable duct including MS handle of appropiate size as per direction of EIC.