Salient Technical Features

“Salient Technical Features of the equipment/systems/services covered in IFB No. 40024357, Bidding Document No. CS-1420-206A-2 are mentioned below. These Salient Technical Features are mentioned only to facilitate the prospective bidders to prima-facie understand the requirements under the tender and shall not in any way limit or alter the scope of work and technical features/specification of equipment/ systems/ services covered in the Bidding Documents. Detailed provisions in regard of scope of work and technical features/ specification of equipment/ systems/ services, contained in the Bidding Documents shall be final and binding.”

A. General Information to Bidder

i). Offered Switchgear/MCC should be suitable for replacing existing Switchgear/MCC.

ii). The bidder is advised to visit Unchahar site before submitting the techno-commercial bid to get acquainted with the system and get detail information of existing Switchgear/MCCs, its connection, orientation, matching with existing foundation plan and location etc. if required.

iii). The bidder shall offer Switchgear/MCC suitable for replacement of existing Switchgear/MCC i.e. there should be no need to change the existing foundation, Cable connection of existing cables, etc.

B. Technical Features

The short-time fault withstand rating of the switchgears shall be 45kA (RMS) for one second and the Dynamic withstand rating shall be 105kA (peak).

The reference ambient temperature is 500 C for all the equipment.

All switchboards shall be of metal enclosed, indoor, floor-mounted, free-standing type of bolted design. All switchboards shall be divided into distinct vertical sections (panels), each comprising of busbar compartment, switchgear / feeder compartment, cable compartment or cable alley and control compartment.

All 415V ACDB modules, Circuit breaker modules and MCC modules shall be of fully draw out type having distinct “Service” and “Test” positions.

The Circuit Breakers / Contactors shall be of air break type & should conform to the requirements of IS 13947 / IEC 60947.MCCB shall be provided for 100A,125A,160A, 200A, 250A, 400A & 630A supply feeders. The motor feeders for 110KW & above shall be Air Circuit Breaker controlled.

All the protective relays associated with the Circuit breaker modules shall be of Numerical communicable type IEC 61850 compliant for Protection, Control, Metering and Status monitoring.