Bevel-helical gearboxes B3 Backstop Sz Backstop Sz Backstop Sz B3KV-3-C

Flender/Flender Gear Units/Bevel-helical gearboxes B3

ruments and other panel mounted components effectively) bonded to the earth bus. Hinged doors earthed through flexible multi-stranded insulated copper wire. Looping of earth connection resu lting in loss of earth connection to other devices when the loop is broken not permitted. looping is allowed fo connection of multiple components to earth bus. 1 of 1 INDRADHANUSH GAS GRID LIMITED TECHNICAL SPECIFICATION FOR NATURAL GAS COMPRESSOR STATION FOR NORTH EAST GAS GRID PIPELINE PROJECT ______________________________________________________________________________________________ TS NO.: MEC//2UU/0/2/0 Electrical system Chapter-0.0 2, MECON Limited, All Right Reserved Pag 3 of 2 Withdrawable units provided ith self aligning, spring loaded, copper earth contacts of make before/break after type, ensuring earth contin uity from service to the test position. 1.0 Protection Requirement 1.1 Electrical Protection Selection of protective scheme ill be based mainly on reliabil ity, sensitivity, selectivity. All main protections shall be fast acting type in order to clea the faulty system from the healthy system in earliest possible time to minimize damage to equipment and ensure continuity of power supply. 1.2 Protective scheme requirement Protective relays shall be provid ed as per the specified protec tion for each type of feeder . All relays shall conform to the requirements of IS:3 1 / IEC-6 / IEC 6 or other applicable standards All protective relays shall be of microprocessor based numerical type and shall comply to IEC 6 standard, Edition-2 for communication. Further, the test levels of EMI as indicated in IEC 6 shall be applicable. Th relays shall generate GOOSE messages as per IEC 6-9-2 standards for inte rlocking and also to ensure interoperability with third party relays. Each relay should also generate an ICD file in EXCEL format for engineering/ i