Public Works Department Tender

Supplying, installation, testing and commissioning of 800A capacity, 4P Air Circuit breaker 50KA suitable for 415V and designed at 690V AC Supply system,3 phase, Insulation voltage (Ui)=1 kv, Impulse Voltage (Uimp)= 12 kv, 50 Hz, Manual draw out type (MDO), front operated with microprocessor-based LCD protection release for adjustable over current, adjustable short circuit, adjustable earth fault & instantaneous protection. The ACB shall havecs=Icu=Icw=100% for 1 sec. for short circuit breaking capacity, full rated neutral, zone selective interlocking with atleast required number of NO and NC switches. ACB shall also confirm to IEC 60947/part 2. Protection release shall have with inbuilt battery back-up. Pre-overload & over temperature protection with individual fault indicating LED's on release. New door as per new ACB's also to be mount as existing panel breaking should have electrical interlocking (Incomer and bus coupler) through under voltage release with proper wiring. Retrofitting to match the ACB with existing panel. Including dismantling of existing ACB complete as required. (Make: Schneider Model No-NW 6H/Legrand Model No- DMX3 MP4/Siemens Model No-3WL ETU45B)

Dismantling of 800A 4 Pole Air Circuit breaker from the existing panel including disconnecting all the electrical connections etc as required.

Providing and fixing 400 A rating 3 pole contactor with 2 NO and 2 NC auxilliary contacts in existing cubicle panel board including drilling holes in cubicle panel, making connections, etc. as required.