Download - Daman and Diu Electricity Department, Government of ...

3.3 Control circuit voltage adopted for electrically operated closing and tripping mechanism of
high voltage circuit breakers, auxiliary relays, indicating lamps etc shall be 110V DC.
3.4 Unless otherwise specified auxiliary supply to space heaters, cubicle lamps, sockets etc. shall be
240V, AC single phase fed from auxiliary ACDB located in Control room.
4.0 GUARANTEE
The contractor shall warrant that the plant will be new and in accordance with the
specification and that the equipment structures ect. will be free from defects on materials and
workmanship. The contractor shall furnish performance guarantee for a period of 24 calendar
month (guarantee period) from the date of commissioning for smooth operation of sub
station.
5.0 OTHER REQUIREMENTS
5.1 Accessibility and interchangeability
All working parts, insofar as possible, are to be arranged for convenience of operation,
inspection, lubrication and ease of replacement with minimum downtime. All like parts of
equipment or of duplicate equipment offered shall be interchangeable.
5.2 Quality and Workmanship
5.3 Painting
The quality of materials of construction and the workmanship of the finished products /
components shall be in accordance with the highest standard and practices adopted for the
equipment covered by the specification.
All items of equipment and materials shall be thoroughly cleaned and painted in accordance
with relevant Indian Standards. The finish paint shall be done with two coats of epoxy based
final paint of colour Shade RAL 7032 of IS:5 for indoor equipment
6.0 Approved make of Equipments Make:
a) 66 KV SF-6 circuit Breaker……………..ABB/CG/Siemens/Alstom
b) 66 KV CT……………………………….Hi-voltage/Test field/Mehru/
ABB/BHEL/CGL
c) 66 KV PT……………………………….Hi-voltage/Test field/Mehru
ABB/BHEL/CGL
16