NIT No-12 EE (EM) M-I/ (24-25) Item No. 09

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 & MCCBs including dismantling of terminations and existing hardware and rusted parts and various other items requiring change in the panel as required at site.

Replacement of Super Heavy Duty 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 aluminum bus bars or copper multistrand cables with lugs, tapes etc. to form banks as per requirement of various capacitor banks.

Replacement 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.

Replacement of capacitor duty contactors for 20 KVAR capacitor for replacement of defective contactors of APFC panels -make Standard.

Replacement of capacitor duty contactors for 12.5 KVAR capacitor for replacement of defective contactors of APFC panels -make Standard.

Replacement of triple pole MCCB of 160 A capacity for operation and safety of individual capacitor bank - make Standard.

Replacement of triple pole MCB of 6 A capacity for operation and safety of individual capacitor bank - make Standard.

Replacement of triple pole MCB of 25 A capacity for operation and safety of individual capacitor bank - make Standard.

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

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

Replacement of LED indication lights of various colors to replace defective/burnt out lights make -Standard.

Supply of Push Button with element of to replace defective push button. 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 APFC Panels 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, Decarbonizing 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: 1. Meggering of complete capacitor installation using 500V megger., 2. Continuity test for checking continuity of all circuits., 3. Programming of APFC relay for target power factor., 4. Monitoring of Power Factor as per specified parameters

bhawani electrical system