Bevel-helical gear Reduction Boxes B3 ering data continued Low speed shaft LSS Oil qu B3-VV19-B

Flender/Flender Gear Units/Bevel-helical gear Reduction Boxes B3

ormance. ) HT Switchboards ) Routine tests Physical, dimensional and fitme nt & alignment checks including: ) Checking with respect to genera arrangement like feeder dispos ition, appearance, termina tions, wiring etc. ii) Checking of mechanical work like , finish, movement and proper engagement of withdrawable breakers, fixing of doors, etc. iii) Verification of BOQ. iv) Interchangeability of drawout breakers of the same rating. Operational, functional & interlock Checks with respect to single line diagram and control circuits. Operation test for circuit breakers etc. with normal control vo ltage and closing at 8-1% and trip at 7-1% of normal control voltage. Tests to check polarity of CTs and primary injection test Insulation test and ielectric test of the switchboard. Checking of protective earthing circuits Measurement of total contact resistance for feeders. Breaker closing/ opening time & co ntact resistance for 2% of he breakers. ) Type tests Short circuit breaking, making & withstand capacity of all CB atings used. Mechanical and electrical endur ance test of al CB ratings used . Short circuit withstand capacity of switchboard.(For same ratin &same design of switchboard) 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 2 of 2 Internal arc withstand test fo switchboard as per IEC 6-2. (For same design of switchboard & enclosure) Temperature rise test as per IEC 6-2. (For same rating & same design of switchboard) Impulse withstand test as per IEC 6-2. (For same voltage & design of switchboard