Preventive Maintenance of 2x 500 KVA Substations at TE Palayam and TE Vellayil under Calicut BA

Amount

PART A; TE PALAYAM

Servicing of 1000A/ 800 A draw out type M Pact GEC ALSTHOM/ L & T /C&S make LT ACB including cleaning /checking all insulators ,mechanical parts ,all moving and fixed contacts ,secondary isolating contacts ,all connection of CTs ,control wiring ,lubricating all mechanical parts, cleaning contact tips, applying petroleum jelly on all contacts, Checking the mechanical interlock etc as reqd (work should be carried out by appropriately qualified and experienced mechanic)

Checking the complete MV panel for loose connections at termination of cables/bus bars, all controls /metering wires except for the ACBs ,checking/servicing and of all out going switches, tightening of bolts /nuts, screws, cleaning etc as reqd a) MV panel -1-[24 outgoings]

Servicing 3 Panel HT panel comprising of 1 No 400 Amps isolator as incoming and 2 Nos 400 A OCB as out going including checking all connections/filing of contacts, cleaning of carbon deposits, applying varnish on all HT spouts & CTs, lubricating all mechanical parts, testing commissioning etc as required.

Carrying out filtration of transformer oil of 11KV/433 V 500 KVA indoor transformer/OCB, including heating, filtering, and bringing the breakdown strength of transformer oil to the required value as per standards, etc as required

Supplying and filling of transformer oil confirming to IS 335 suitable for 11KV/433 V step down transformer for topping up the oil level etc as required

Recharging breather using fresh silica gel after removing the hydrated gel, cleaning etc as reqd

Revamping of existing earth pit masonry enclosure and cover plate by removing the deposited soil, i/c replacing the rusted watering funnel, painting the cover plate and masonry work, sign writing etc as reqd.

Painting of 4 pole HT yard structure members with single coat industrial primer and 2 coats of aluminium paint after thorough rubbing of existing paint and rust i/c Tightening of all jumber/lightning arrester/DO fuse/insulator connections, replacing corroded nut bolts, giving standard colour code to all the component and connecting leads with enamel paint of approved colour, laison work for getting shutting down of HT line from KSEB and restoration of supply arrangement etc. as reqd.

Painting of existing metering kiosk of size 1.0m (H) x 0.60m (W) x 0.50m with a coat of zynchromate primer and 2 coats of branded enamel Paint after scratching and rubbing of existing paint etc. as reqd

Painting of existing yard fencing with a primer coat of zynchromate primer and 2 top coats of aluminium paint after scratching the rusted area , cleaning etc as reqd. ( approx. 40 Sq.mtr)

Servicing of 11KV AB switch including testing all contacts applying soft grease/petroleum jelly etc as required

S/F following items in the HT structure to make the system in healthy condition i/c removing the faulty items, giving connections, testing, commissioning etc as reqd

11 KV Pin insulator

11 KV Disc insulator

11 KV Lightning arrestor

S/F following items in the MV panel to make the system in healthy condition i/c removing the faulty items, giving connections, testing, commissioning etc as reqd

2A HRC Fuse (cylindrical type)

LED cluster type indication lamps for Red/Yellow/Green indication(M/s Vaishno/ss)

Supplying and fixing following items in the substation room with suitable metallic stand etc as reqd. a) Rubber gloves 15000 V rating with ISI mark

Dismantling the top cover and associated part of the transformer, arrest the oil leakage through the LT side bush of tank using suitable gasket / O ring/ Oil seal etc. Refixing the top cover with required packings etc as reqd.

PARTB: TE VELLAYIL

Servicing of 1000A/ 800 A draw out type M Pact GEC ALSTHOM/ L & T /C&S make LT ACB including cleaning /checking all insulators ,mechanical parts ,all moving and fixed contacts ,secondary isolating contacts ,all connection of CTs ,control wiring ,lubricating all mechanical parts, cleaning contact tips, applying petroleum jelly on all contacts, Checking the mechanical interlock etc as reqd (work should be carried out by appropriately qualified and experienced mechanic)

Checking the complete MV panel for loose connections at termination of cables/bus bars, all controls /metering wires except for the ACBs ,checking/servicing and of all out going switches, tightening of bolts /nuts, screws, cleaning etc as reqd a) MV panel -1-[39 outgoings]

Servicing 3 Panel HT panel comprising of 1 No 630Amps Vacuum Circuit Breaker as incoming and 2 Nos 630 A LBS as out going including checking all connections/filing of contacts, cleaning of carbon deposits, applying varnish on all HT spouts & CTs, lubricating all mechanical parts, testing commissioning etc as required.

Carrying out filtration of transformer oil of 11KV/433 V 500 KVA indoor transformer, including heating, filtering, and bringing the breakdown strength of transformer oil to the required value as per standards, etc as required

Supplying and filling of transformer oil confirming to IS 335 suitable for 11KV/433 V step down transformer for topping up the oil level etc as required

Recharging breather using fresh silica gel after removing the hydrated gel, cleaning etc as reqd

Revamping of existing earth pit masonry enclosure and cover plate by removing the deposited soil, i/c replacing the rusted watering funnel, painting the cover plate and masonry work, sign writing etc as reqd.

Painting of 2 pole HT yard structure members with single coat industrial primer and 2 coats of aluminium paint after thorough rubbing of existing paint and rust i/c Tightening of all jumber/lightning arrester/DO fuse/insulator connections, replacing corroded nut bolts, giving standard colour code to all the component and connecting leads with enamel paint of approved colour, laison work for getting shutting down of HT line from KSEB and restoration of supply arrangement etc. as reqd.

S/F of out door metering kiosk of size 70 cm x 60cm x 25 cm in sheet steel fabricated out of 16swg MS sheet duly painted with zynchromate primer and 2 coats of approved color enamel paint with rain guard arrangement welded at top, i/c P/F of angle iron bracket at the bottom at a height of 20cm on both side of the kiosk, i/c P/F 13 terminal Test Terminal Box to facilitate the connection etc, i/c dismantling the existing completely rusted kiosk, necessary liaison works with KSEB TMR Division complete as reqd.

Painting of existing yard fencing with a primer coat of zynchromate primer and 2 top coats of aluminium paint after scratching the rusted area , cleaning etc as reqd. ( approx. 26 Sq.mtr)

Servicing of 11KV AB switch including testing all contacts applying soft grease/petroleum jelly etc as required

S/F following items in the HT structure to make the system in healthy condition i/c removing the faulty items, giving connections, testing, commissioning etc as reqd

11 KV Pin insulator

11 KV Lightning arrestor

S/F following items in the MV panel to make the system in healthy condition i/c removing the faulty items, giving connections,testing, commissioning etc as reqd

2A HRC Fuse (cylinderical type)

LED cluster type indication lamps for Red/Yellow/Green indication(M/s Vaishno/ss)

Supplying and fixing following items in the substation room with suitable metallic stand etc as reqd. a) Rubber gloves 15000 V rating with ISI mark

S/F of High Voltage HRC fuse of 20A rating with 40kA breaking capacity suitable for 11 KV/12 KVHT Load Break Switch