WBPWD/EE/CED/e-NIQ-09/2024-25

Amount

Sub station servicing and testing & Commssioning, condition monitoring of electrical assets:- HT Panel: Overall servicing, cleaning, removal of moisture & dust from all parts of 3panel HT breaker(1no incomer+2no outgoing)i.e from breaker,busbar, PT etc. with co's own tools, tackles & cleaning agents,duster etc. as per direction of EIC

3 panel HT breaker (at MJN Main Sub Station)(One number incomer+Two no Outgoiung)

3 panel HT breaker (at Mother & Child Hub Sub Station)(One number incomer+Two no Outgoiung)

Different tests to be performed on above HT breakers (i.e for each all Incoming & Outgoing) with Co's own testing arrangements & submission of test report as per direction of EIC. 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.(if required) h. Tripping test confirmation of WTI of the Transformers i. Supply of necessary wire, sockets, ferrule for control wiring modification.(if required) J. Modification of setting as per CT ratio and load pattern as per direction of EIC. k. all mechanical parts must be cleaned by appropiate CRC and approved lubrication Kit must be used.

Transformer:- Opening the Dry Type Transformer part by part and assemble the same after thorough maintenance work including Cleaning, heating as per direction of EIC. Cleaning dust & sludge from Transformer body including tits bits work with co's own tools.tackles & cleaning agents, duster etc. as per direction of EIC. 500 kVA,dry type Transformer (at MJN main Sub station)

500 kVA,dry type Transformer (at Mother & Child Hub Sub station)

Different tests to be performed on above Transformers (i.e for each transformers primary as well as secondary side) with Co's own testing arrangements & submission of test report as per direction of EIC. 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.

LT panels Overall servicing & cleaning, removal of moisture dust dirt etc of LT panel part by part by co's own tools,tackles & cleaning agents,duster etc. as per direction of EIC

Main LT panel:(MJN Main Sub station) a. 800A ACB (I/C 2nos, B/C 1no)----3nos b. 1000/800A ACB (interconnection from other SS)---1no along with overall cleaning of LT bus bar and outgoing MCCB/Main switches, bus bar joints etc. and tightness of all joints with proper nut bolt tightness wrench set

Main LT panel:(Mothet & Child Hub Sub station) a. 800A ACB (I/C 2nos, B/C 1no)----3nos b. 800/1000A ACB (2nos DG incomer or other)----2nos along with overall cleaning of LT bus bar and outgoing MCCB/Main switches, bus bar joints etc. and tightness of all joints with proper nut bolt tightness wrench set

Different tests & meter setting to be performed on above LT panels as per direction provided by the EIC 1. IR value measurement of LT breaker by 1KV megger 2. Checking of indication circuit and spring charging mechanism. 3. Operation of breaker both electrical and mechanical. 4. Setting of all Multi Function meters (make L&T) for all incoming and outgoing switches

Supply & replacement of existing defective LED indication lamps (22.5mm) (Make---L&T/ABB/Legrand) Red,Yellow,Green colour

Supply & fixing of Multi function meter inplace of existing old Ammeter/voltmeter for each incomer (Transformer & DG) in both sub ststion as per direction of EIC and make the open cutout close by appropiate size of bakelite cover (Make L&T, cat no WL501011OOOO, MFM5010 LED meter cl-1 with RS 485/equivalent schneider-converze)

Supply & replacement of SS nut bolts inplace of existing rusted/MS nut & bolts used in bus bar joints, cable joints etc of different sizes as per site requirement as per direction of EIC (Make reputed & must be approved from EIC prior to any installation work)

Cost of transporation of different meters & testing arrangements for performing the above mentioned tests upto each sub ststion etc. all complete. Note: 1) 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. Note: 2) Rate Quoted including G.S.T. @ 18% & L.W.Cess @ 1%

THREE-D ELECTRIC PROJECT SERVICES PRIVATE LIMITED

BGA Electrical and Services Pvt. Ltd.