As per SBD.

Amount

Providing, Installation, testing and Commissioning of 1000KW Liquid Rotor Starter at LIS Rajpora 2nd with required fittings: LRS SPECIFICATION:- Enclosure: the starter shall be floor mounting type with welded steel tank, with drip proof enclosure, complete with three insulated metal chambers inside the tank, overflow outlet, level indicator, drain with gate valve and screened vapour relief vent. Electrolyte: the starter shall be supplied with liberal quantity of dry alkaline salt, sodium carbonate, for preparation of first filling of electrolyte with sufficient spare quantity. Electrode: The starter shall be provided with easily renewable moving electrodes of suitable design to provide equal resistance between each pair of electrodes for balanced and stable star point in all positions of moving electrodes. The starter shall be complete with liberal dimensioned copper shunts, copper straps and heavy copper to copper shorting bars to carry maximum balanced three phase rotor currents and creating an insulated star point outside the motor in the rotor circuit. The moving electrode system shall be operated by a pilot motor suitable for operation on 400/200 ± 10% V, 50 Hz supply. Necessary gear box shall be provided/fitted to reduce the speed of electrodes, Limit switches shall be provided to cut off the motor circuit at the end of traverse of moving contacts in either direction to prevent over travel of electrodes. Indicating lamps shall be provided at conspicuous place on the starter. Complete provision shall be made for operation of starter manually by hand cranking. Other Requirements: The starter shall be liberally designed to meet and satisfy the starting and continuous full load running requirements of the motor. To protect the motor windings against starting surge the design of the starter shall be such as to ensure that the rotor circuit is never open circuited in the starter and even in off position of the starter a star balanced high resistance is forced in the electrolyte. S. No Particulars Material/Remarks 1. 2 Type Liquid Resistance Starter/ LSHM-4 2. 3 Rating Suitable for 1000 KW,11KV , 3 Phase, stator Voltage 66A, H.V slipring Motor. 3. 4 Design Voltage & Frequency 11± 10 % KV 50±3%Hz The starter shall be provided with local push button control for operation of the pilot motor of the starter in either direction. This push button control shall be duplicated in respective motor control panel board and also on the operating console. An emergency push button shall be provided on the starter for emergency tripping. Another push button shall be provided for remote closing of motor control HT switch gear from starter itself. Testing & commissioning on full load. Make: Engineering Enterprises, Jyoti, Kilburn, Parimal, EMEI.

NATIONAL ELECTRO-MECH COMPANY

M/S D M ELECTRICALS