Name of Work: Overhauling of HT & LT Breakers of CPP during MTA: 2024- 2025
Sl. No.
Item Description
1
Complete Overhauling & Testing of 11KV Indoor VCB (01 Nos)of M/s Siemens Vacuum Circuit Breaker (VCB) of rating800Aincluding supply and replacing of defective components as mentioned in Annexure-B
2
Complete Overhauling, testing of6.6 KV Indoor,Vacuum Circuit Breakers (VCB) ofM/s BHEL make of rating400 A to 1600 Aincluding supply and replacing of defectivecomponents as mentioned inAnnexure-B
3
Complete Overhauling, testing of 415 V Indoorair circuit breakers (ACB) of rating 630 A to 3200 Aof L&T, Seimens, English Electric, Scnieder, ABB make including supply and replacing of defective components as mentioned inAnnexure-B
4
Supply ofthe following items which will be utilised during Overhauling of Breakers (VCB\"s & ACB\"s)
5
Supply of 220 V DC Tripping coil suitable for 6.6KV VCB\"s of BHEL make of 400A / 800A (INSPROS, 220V DC, 219.2 Ω (OR) Equivalent / Suitable One to One replacement of total assembly including plunger)as mentioned inAnnexure-B
6
Supply of 220 V DC Closing Coil suitable for 6.6 KV VCB\"s of BHEL make of 400A / 800A (3AY1510-OF 220V DC, 484 Ω (OR) Equivalent / Suitable One to One replacement of total assembly including plunger)as mentioned inAnnexure-B
7
Supply of220 V DC Tripping coil Suitable for 415V ACB\"s of L&T make CN-CS 800A/1250A/1600A/3200A/4000A (Shunt release EA 220V DC (OR) Equivalent / Suitable One to One replacement of total assembly including plunger)as mentioned inAnnexure-B
8
Supply of 220 V DC Closing coil Suitable for 415V ACB\"sof L&T make CN-CS 800A/1250A/1600A/3200A/4000A (220V DC Equivalent / Suitable One to One replacement of total assembly including plunger)as mentioned inAnnexure-B
9
Supply ofSpring Charging Motor for 6.6KV VCBs of 400A & 800A of BHEL make (Small Power Motors, Universal Series, 220 V DC, Frame - ATF-4A, Duty Cycle-S3, 8000 RPM (OR) Equivalent / Suitable One to One replacement including motor shaft mounted gear assembly)as mentioned inAnnexure-B
10
Supply of Spring Charging Motor for 415V ACBs of L&T make CN-CS 800A/1250A/1600A/3200A (Wolf make SPM-63, 220 V DC, 15000 NLRPM (OR) Equivalent / Suitable One to One replacement including motor shaft mounted gear assembly) as mentioned inAnnexure-B
11
Supply of SELEC Time delay relay,Voltage 230VAC, ANALOG TIMER -SELEC 800XA -230 VAC 0-30 SEC as mentioned inAnnexure-B
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