Specifications

NAIROBI OPERATIONAL HUB
UNOPS Building, UN Lane, Off UN Avenue Tel: [phone]
P.O Box 783,Village Market, 00621 E-mail: [e-mail]
Nairobi, Kenya Website: www.unops.org
UNOPS is ISO 9001 certified
Wherever specified/indicated, the stabilizer shall be constructed on booster
transformer principle. The rating of the stabilizer shall be as indicated on
drawings or as specified in the B.O.Q
Technical Requirements
Ambient Temp. up to 50 °C
Cooling type Natural air cooled
Input 415V AC ±15% at 50Hz
Output 415V AC±2% at 50 Hz
The stabilizer shall be equipped with filters for transients, compensator for
unbalanced load in 3 phases, protection against faults and malfunctions. The
stabilizer shall be fixed with 3 Ammeters, voltmeters
PART 3 – EXECUTION
3.01 CIRCUITS AND CONNECTIONS
A. Provide all outgoing circuits with separate compartment and/or screen so
that equipment for any one circuit can be maintained without risk of
contact with line connections on any other circuit.
B. Connect feeders, for circuits rated upto 63A, to terminal blocks located in
separated compartments at top or bottom, conveniently arranged to
facilitate termination of cables and suitably identified.
C. For feeders, rated more than 63A, suitably extend copper links rigidly
supported and covered with coloured PVC sleeves.
D. Provide all feeders with cable lugs and brass cable glands.
E. Provide removable gland plates suitable for the glands required for the
specified cables. Where cables are single core, the gland plates shall be of
a non-ferrous metal.
F. Provide all small wiring of stranded copper, not less than 2.5mm
2
with
PVC insulation to B.S. 6231. Small wiring shall be neatly bunched and