Military Engineer Services Tender

Design, Manufacture, Supply, Installation, Testing and Commissioning of 11 kV / 0.433 kV, 500 kVA OEM Factory Manufactured, factory tested ready to install and connections type Compact Substation with an outdoor enclosure, equipped with 500 kVA oil cooled Transfomer, ONAN type, energy efficiency level - 2 as per IS 1180, 3 Way, 11 kV Motorised/Manual Ring Main Unit [SF6 Gas Insulated Switchgear] consisting of 1 Nos, 630A 11 kV Load Breaking Switch & 02 Nos 630A 11 KV VCBs SF6 Gas insulated Vacuum Circuit Breaker and with 1000 Amps, Air Circuit Breaker as secondary side control complete with HT Cable interconnection in between Transformer and RMU and suitable sized Busbar between Transformer and LV Incoming Main Switchgear-ACB for full load output current of the transformer and Internal earthing connections by GI Strips all as a single transport unit complete all as specified as detailed below.

[b] Enclosure: Outdoor type Galvansied enclosure or CRCA sheet painting with two coats of epoxy powder paint over a coat of primer after undergoing a rigourous metal treatment process involving alkalinedegreasing, descaling in dilute sulphuric acid or any other acid and phosphate (seven tank process) having modular construction with 2mm thick Galvanized Sheet or CRCA sheet in Corrugated / Louvered design type wall design for better heat dissipation and providing robust construction. The degree of protection for HT & LT switchgear compartment shall be IP54 & degree of protection of transformer compartment of the enclosure shall be minimum IP34. The enclosure exterior shall be painted with polyurethane paint / epoxy powder coated and tropicalised to Indian weather conditions suitable for A&N Islands. Each compartment shall be provided with the door and pad locking arrangement. Doors of transformer compartment are fitted with Arc reflectors from the inside for providing better safety. The Compartment illumination lamp with door-operated switch shall be provided for each compartment. Structure of the substation shall be able to withstand the gross weight of all equipment. The Compact Substation shall be provided with lifting beams and hooks for easy installation at site and it shall be possible to transport the equipment along with Transformer, RMU & LT Panel from one site to another. Dimensions of enclosure shall be as per the components required and mentioned in BoQ.er the components required and mentioned in BoQ.

[c] HT Switchgear [Inside Compact Sub-Station]: Three way 11KV, 630 Amps, 21 kA / 3 Sec Non-Extensible Ring Main Unit / Compact Switchgear with Copper Busbar, consisting of 630 Amps, one Number [As incomer] fixed Manual & Motorised Load Break Switch & Two Numbers Fixed Manual & Motorised SF6 insulated Vacuum Circuit Breakers [As Outgoing] in SF6 Gas insulated sealed for life in minimum 2 mm Thickness SS 441 stainless steel tank IP 67 degree of protection with Air Insulated Metering Module along with FRTU, One Number fault passage indicator shall be provided for Load Break Switch with 1 NO + 1 NC Contact, One Number manometer shall be provided for each outgoing feeders, One set of 100/1A, 2.5 VA, Class 1.0 for metering & One set of 100 / 1A, 2.5 VA, CL 5P 10 Current Transformers and one number of Digital Multifunction Meter with RS 485 Port shall be provided for each VCB Feeders, One Set of 11 kV / RT3 / 110 / RT3, Class 1.0, 20 kVA PT shall be provided in Metering Module. Vacuum Circuit Breakers shall be with self-powered micro processor based Numerial Over Current and Earth Fault Relay having Charged Open / Closing Mechanism, On / Off Indicators, Mechanical Operation Counters etc. Interconnection between RMU and Transformer shall be using suitable Aluminium unarmoured 11 KV [UE] 3runs X 1 Core X 95 Sq.mm XLPE cable.