NIT No.11 Item 02

Dismantling of defective components like capacitors, fuses, post insulators, bus bars etc. from HT APFC panel including dismantling of terminations, mounting arrangements, hardware etc. as required at site

Supply of 400 A, 3.3 kV , 3 ph . HT Vacuum contactors , solenoid coil voltage 220 V , for replacement of defective contactors- make standard

Supply of HT 121 KVAr capacitor bank , rated at 3.3 kv, 3 phase 50 Hz complete with bus bar links post insulators and necessary hardware - make standard

Supply of HT 60.5 KVAr capacitor bank , rated at 3.3 kv, 3 phase 50 Hz complete with bus bar links post insulators and necessary hardware - make standard

Supply of microprocessor HT APFC relay , Aux. Voltage 415 V , with digital display of power factor and other parameter-make standard

Supply of 220 V solenoid coils for replacement of defective coils of HT vacuum contactors- make Standard

Supply of CDI unit for electronic circuit for replacement of defective CDI units of HT vacuum contactors-make Standard

Supply of 100 A, 3.3 KV HT HRC fuses with links and hardware for replacement of blown off fuses - make Anand/Bussman/standard

Supply of 50 A, 3.3 KV HT HRC fuses with links and hardware for replacement of blown off fuses- make Anand/Bussman/standard

Repair of HT isolator including de-rusting of contact blades, providing handle for operation , interlocking arrangement to prevent accidental switching of isolator in open circuit of HT VCB and alignment of closing contact to avoid sparking and subsequent damage to the isolator blades and making the isolator fully functional.

Repair of vacuum contactors including replacement of burnt-out internal wiring, alignment of contacts, de-rusting of various moving components, mechanical functioning of HT VC, auxiliary contactors to make the vacuum contactors fully functional.

Servicing of complete HT APFC panel including complete dusting of all components, cleaning of contactor contacts , tightening of all nut bolts, dressing of control wiring , alignment of doors checking and replacement of defective gaskets, checking and replacement of blown control fuses, checking and replacement of carbonized bus bar insulators and touching of all rusted parts etc. as required at site.

Testing & commissioning of HT APFC panels and fixed capacitor banks as per required parameters including following: i. Continuity and earth test of the circuit ii. Meggering of all equipment for phase to phase, Phase to neutral and phase to earth. iii. All function tests of complete installation iv Setting of APFC relay for target power factor of 0.98 as per required parameters.

Premier Engineering Company