By specifying the angle of application and th B4-CH-11B Bevel-helical gear Reduction Boxes B4

Flender/Flender Gear Units/Bevel-helical gear Reduction Boxes B4

th live parts while mai ntaining compartment and keeping others in services. - Compartment door interlocked ith main power isolating devices. - Bus bar sizes to be selected in accordance with the nominal cur rent rating of incoming load break switch and for ful short circuit power. Incomers and Isolators - The motor control panel shall ha ve one incomer MCCB of suitable rating, 5KA fault level. - The incomers shall be provided with voltmeter and ammeters comp lete with fuse, selector switches and CTs. - All fuses shall be HRC fuses nd shall not be of bolted type in switch fuse units. Contactors - All Power contactors shall be C4 duty as applicable with min. 2A rating. - Shall have at least 2 NO + 2 NC auxiliary contacts with minimum rating of 1A at 1 AC. - For reversible drives mechanically interlocked, contactors shal be used. - All coils shall be suitable for 1 , AC with no economy resis tor. - Insulation of coils shall be class `' or better. Shall pick up positively at voltage between 8% and 1% of the rated value. 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 0 El evators Chapter-0.1 2, MECON Limited, All Right Reserved Page 2 of 3 Auxiliary Relays - Coil voltage 1V AC - 4 NO + 2 NC contacts rated for 1A Timers - Coil voltage 1V AC - ON/OFF relay as required - 2 NO + 2 NC contacts Control Transformer - Control transformer shall be double wound dry type conforming IS: 2- 1 with tapping at +/- 2.5% and +/- 5% on the primary side. Isolating Device . Isolating Devices shall be riple pole with neutral MCCB, apable of safely breaking the full load current of the associated feeder. . All MCCB shall be suitable for rated system fault level. . Control circuit shall be protected by individual control DP MCB with min. short