WORK OF OVERHAULING OF 145 KV SF-6 CIRCUIT BREAKER, GENERAL MAINTENANCE AND SERVICING OF 36 KV VCB AND REPAIRING OF BATTERY CHARGER AT 132 KV S/S KASIA, RAJAPAKAR AND LAXMIPUR UNDER ETD-I, GORAKHPUR

Amount

PART-A (WORK)

Servicing , Repairing and Rectification of Fault of 110V / 200AH Battery Charger JVV Make including replacement of all defective parts as supplied above with associated works like complete dedusting of charger by using vacum cleaner , checking charging and discharging current and its limit , cleaning of all cards with Klinit / Standard cleaning agent etc with all other associates work to complete the job satisfactory at 132 KV S/s Kasia & Rajapakar . (service code-S0083/400999)

Work of configuration , testing , commissioning of Siemens make numerical type O/C , O/C & E/F relay towards HV side after retrofiting in existing T/F C&R Panel by use of special means and testing kit , extraction of D.R and relay data . The job also includes dismantling of existing old & obsolete electromagnetic IDMT O/C and E/F relay of 40 MVA T/F-I , providing new ferrule as per numerical relay drawing , reconnection of cables as per drawing , performing satisfactory operation from local , remote and protection relay with all other associated works to complete the job satisfactory . (service code-401551/S0049)

Major Overhauling of mechanism assembly of 145 KV SF-6 C.B spring type installed at different feeders and T/F bays at various substation under ETD-I , Gorakhpur . The work includes overhauling of control block assembly , opening latch , closing latch , support latch , anti-pumping assembly . Opening , cleaning and greasing of motor charging system , replacement of worn out parts like roller-D valve seat , O-ring P-80 , O-ring P-7 and other damaged ring not specified here . Checking of shock absorber , closing damper , etc . Adjustement of all gaps , cleaning and greasing of levers , connecting rods , cam , disc cam etc . Checking of mechanism assembly for wear and tear , rectification / repairing of worn out parts . Checking of limit switch , power contactors , auxiliary contractors for proper fuctioning . Checking and retightening of all electrical connections . Checking and attending the gas leakage of circuit breakers . Measurement of closing / tripping time of circuit breakers . Measurement of contact resistance of circuit breakers with digital meter . Work shall include submission of analysis of closing / tripping time & contact resistance measured for each CB along with any further necessary recomendation for healthy future life of CBs. (service code-401042/S0083)

132 KV S/s Kasia , Kushinagar .

132 KV NISM Bay , (ABB Make) MFY-2006 , Sr. No. 1702028

General maintenance & servicing of operating mechanism , spring charging mechanism of 33 KV V.C.Bs at below mentioned 132 KV S/s including travel measurement of moving rod , checking of 33 KV V.C.B cobtact continuity , dismatling of tie rod assembly , cleaning & greasing of its all roller pins and its re-assembly , cleaning of all moving parts and their greasing , checking and rectification of problem in electrical circuits including Aux. contact block , checking of auto opreation of spring charging motor , setting of limit switches , meaurement of contact resistance of all the pole susing contact resistance meter , Measurements of closing and tripping time of all the poles with the help of digital time measurement equipment , checking healthiness of the vacumm interrupter unit by using vacuum interrupter tester and finally checking of operation of the vacuum circuit breakers via remote / local as well protection mode with all other associated work to complete the job satisfactory (Each breakers test report shall be provided by firm to engineer incharge) .

132 KV S/s Kasia , Kushinagar .

132 KV S/s Rajapakar , Kushinagar .

132 KV S/s Laxmipur .

PART-B (SUPPLY)

Supply of Float controller card (TPEC-1) suitable for 110V / 200AH Battery charger JVV Make . (4100000202)

Supply of Boost controller card (TPEC-2) suitable for 110V / 200AH Battery charger JVV Make . (4100000202)

Supply of Flat Rectifire Thyristor - Diode Module 45A/1200V , Ratanshah/Naina/Hirect/IR/Semikrone Make . ( 4000000274)

Supply of Boost Rectifire Thyristor - Diode Module 70A/1200V , Ratanshah/Naina/Hirect/IR/Semikrone Make . ( 4000000273)

Float Free wheeling & blocking diode , diode-diode module (D4-BDI) , 56A/1200V , Ratanshah /Naina/Hirect/IR/Semikrone make . (4000000222)

Boost Free wheeling & blocking diode , diode-diode module (D4-BDI) , 70A/1200V , Ratanshah /Naina/Hirect/IR/Semikrone make . (4000000221)

Supply of HRC Fuse HQ type size A3 , 50A suitable for above charger . (4100000212)

Supply of 22 Pin Card connector. (4000002467)

Supply of Float Filter capacitor FC-1 , 10000mfd/250V DC Alcon/Sarda/CTR make . (4000000215)

Supply of Boost Filter capacitor FC-2 , 10000mfd/250V DC Alcon/Sarda/CTR make . (4000000216)

110 VDC Trip coil suitable for 132 KV circuit breakers ABB Make (Mfg Year-2006) for fitting in overhauling work.

110 VDC Close coil suitable for 132 KV circuit breakers ABB Make (Mfg Year-2006) for fitting in overhauling work.

Sampada Trading Company (BID ID -5321381)

M/S V P ASSOCIATES WORKS PRIVATE LIMITED (BID ID -5327588)