NIT NO. 7(M-6)ITEM NO.29

RENOVATION OF APFC PANEL Dismantling of defective capacitor units from the APFC panel after suitably discharging the left-over charge on capacitors to ensure safety of the working persons along with dismantling of APFC relay, indications lights, meters, A/M switches, MCBs including dismantling of terminations and existing hardware and rusted parts and various other items requiring change in the panel as required at site

Supply of capacitor units of various capacities, rated at 440v, 3 phase, 50 Hz system complete with terminal cover, cable end entry, mounting structure and hardware etc. -make standard

Banking of capacitor units to form banks of suitable rating by electrical interconnection using aluminium bus bars or copper multistrand cables with lugs, tapes etc. to form banks as per requirement of various capacitor banks

Supply of APFC relay, microprocessor based to replace defective APFC relay with digital display of power factor and other parameters to sense power factor through control CT and give phased impulses to contactor coils for switching ON-OFF required number of capacitors as per requirement to achieve target power factor- make STANDARD

Supply of capacitor duty contactors for 20 KVAr capacitor for replacement of defective contactors of APFC panels -make Standard

Supply of triple pole MCCB of 250 A capacity for operation and safety of individual capacitor bank - make Standard

Supply of Spreader terminal for 250A, triple pole MCCBs for connection with bus bars. make Standard

Supply of triple pole MCB of 32 A capacity for operation and safety of individual capacitor bank - make Standard

Supply of triple pole MCB of 63 A capacity for operation and safety of individual capacitor bank - make Standard

Supply of LED indication lights of various colours to replace defective/burnt out lights make -standard

Power wiring with 10 sq. mm for connection between capacitors and bus bar with copper lugs and necessary hardware etc. as required at site.

Installation of all above components in the existing capacitor banks with suitable fabrication work to accommodate new items in the existing enclosure / structure for alignment of components and ease of termination complete with hardware on the mounting structure and termination of existing cables with lugs, tapes etc. complete with earthing of the capacitor banks, touching the rusted parts of the structure with paint for protection from moisture etc. as required at site

Servicing of APFC panels including complete dusting of the panel, cleaning of contact points, Decarbonising of joints, alignment of doors, checking of all nuts & bolts control circuit and power circuit wiring dressing and renovation of control and power terminations with lugs tapes etc. as required at site

Testing & commissioning of complete APFC Panel installation including following: 01. Dusting of complete panel 02. Meggering of complete capacitor installation using 500V megger 03. Continuity test for checking continuity of all circuits 04. Alignment of doors 05. Tightening of all nuts and bolts 06. Cleaning of all contact points and joints 07. Setting of APFC relay for target power factor

bhawani electrical system