WBPWD/SE/SWEC/NIQ72/2024-25

Amount

HT 3 Panel Gear: Overall servicing, cleaning, removal of moisture & dust from all parts of 3 nos breaker (01 no incomer+ 02 nos ougoing), busbar etc. Including following tests with co's own testing set up. a. IR value measurement by 5 KV megger. b. Contact resistance measurement by Milli volt drop method by injecting 100A DC. c. Primary injection of CT, artificial fault simulation by primary injection (over current and earth fault). d. Tripping test confirmation by relay. e. Checking of indication circuit and spring charging mechanism. f. Operation of breaker both electrical and mechanical. g. Major modification of control wiring of 3 nos. panel. h. Tripping test confirmation of WTI. i. Cleaning, servicing and tightness checking of HT Bus-Bar. j. Cleaning, servicing and testing of PT. k. Supply of necessary wire, sockets, ferrule for control wiring modification. l. All setting given as per CT ratio and load pattern. k. Recommissioning of HT panel to make both 750kVA transformer running.

Transformer:- Opening the Dry Type Transformer and close after maintenance work including Cleaning heating as per direction of EIC. Cleaning dust & sludge from Transformer body including tits bits work and necy.testing work by special H.T. technician and labour including following tests with co's own testing set up 1. IR value measurement of HT and LT side by 5 KV and 1 KV motorized megger. 2. Polarization Index value measurement. 3. Magnetizing current checking. 4. Magnetic balance and core balance checking. 5. Ratio checking of Transformer.

750 KVA, Dry type, Dyn 11

Overall servicing & cleaning, removal of moisture dust dirt etc of LT panel part by part with following necy steps 1. IR value measurement of LT breaker by 1KV megger 2. Servicing, cleaning and testing, tightness checking of entire LT bus bar. 3. Checking of indication circuit and spring charging mechanism. 4. Operation of breaker both electrical and mechanical. 5. Setting of all Multi Function meters (make L&T) for all incoming and outgoing switches as per direction of EIC

Main LT panel:1 a. 1250A ACB (I/C) -----1 no b. 630A ACB(O/G), --- 1 no c. all outgoing SFUs (63A to 315A) switches of different Amp rating inluding Bus-bar Main LT panel:2 a. 1250A ACB (I/C) ----2 nos, Bus-coupler-1 no b. 1000A ACB(O/G), -- 1 nos c. all outgoing SFUs (63A to 315A) switches of different Amp rating inluding Bus-bar Emergency panel: a. all its I/C and O/G SFU's (250A-315A) switches of different Amp rating - 6 nos , Change over 630A--1 no inluding Bus-bar Fire Panel: a. all its I/C and O/G SFU's (200A-400A) switches of different Amp rating - 4 nos , Change over 630A--1 no inluding Bus-bar

Supplying & Laying Electrical Insulating rubber mat for Substation Panel & transformer rooms rating (upto 33Kv, Anti skid, Black in colour) as per choice of EIC.

Supply of Heavy Duty Safety Hand gloves set reusable type. (Shock proof upto 33Kv) as per choice of EIC.

Supply & Fixing of 5 mm thick MS Checker plate with iron hook for lifting up manually along with necessary arrangement for fixing over the sub-station cable trench.

Terms & Conditions: All tests mentioned above done by agency as per proper guidline given by EIC with co's own instruments,tools and tackles.Copy of calibration certificate of different instruments must be provided prior to any measurement to the EIC. Test results must be registered and provided by the agency as per proper proforma and guidline given by the EIC and same report should be provided in quadraplicate to the dpt.

M S KAMAL SHAW (BID ID -6195189)

KORUNAMOYEE ENTERPRISE (BID ID -6195136)