NATIONAL ALUMINIUM COMPANY LIMITED - Rites

High mast fittings (Non-integral integral type) : 2 nos
Non-integral integral type asymmetrical beam flood light fittings with 2x400W MH lamps complete
with control gear, accessories, etc suitable for installation on 30 M high lighting mast as per
technical specification ion (Bajaj BGENF 22 or equivalent with MH lamps) shall be mounted on the
lantern carriage of each of the high lighting mast.
Lamps
All lamps shall be of high lumen output and with long life.
Incandescent Lamp
All general service incandescent lamps shall be gas filled, clear finished and coiled coil type
where possible. Incandescent lamp cap shall be of screwed type having GES/ES thread
depending on the sizes of the lamp.
Fluorescent Lamp
All fluorescent lamps mps shall be of day day-light light type unless otherwise specified and shall be suitable
for suitable for switch-start start with bi bi-pin type cap.
Sodium vapour lamps shall be suitable for universal burning position. The elliptical outer bulb
shall be coated inside the diffusing powder and shall have good colour appearance. The
sodium vapour lamp shall be of screwed type E40/E27 base depending upon the wattage of
the lamp.
Ballast
The ballast shall be of electronic type and well tried out design to give trouble trouble-free operations
with long service life having provisions for suitable tappings in steps.
Capacitor
Capacitor shall consist of element wound from layers of higher purity aluminum foil and
capacitor paper contained in aluminum cylindrical can. The capacitor sh shall be vacuum dried
and impregnated. The can shall be hermetically sealed and terminals provided over porcelain
insulations. The capacitor shall conform to IS 1569.
Lamp Holder
The lamp holders shall have spring loaded contacts for positive contact wit with pins so as to
prevent the lamp from being extinguished due to vibration. The holder shall be such that the
lamps can be removed easily whenever required for cleaning or replacement purposes.
For fluorescent lamp, bi-pin pin lamp holder shall be provided. TThe
he holder of incandescent lamps
upto 200 W shall be of ES type.
Technical Specification:Sec-6, Electrical
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