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
2.09 AUTOMATIC TRANSFER SWITCH / ATS/.
The panel for the diesel generator set) shall include:
1. 2 x 4 pole contactors AC1 category, complete with mechanical and electrical
interlock and of suitable rating.
2. Phase failure, phase rotation, overvoltage and under voltage unit protection
unit with built in adjustable time delay of 0-10Sec.
3. Set of timers for:
a) delay gen. Loading
b) delay return of supply.
c) Delay gen. Start.
d) Gen. Cool down time.
4. Set of relays for complete automatic transfer function.
5. Three attempts generator start unit, (if not included in the generator control
system).
6. Full engine protection to include low oil pressure, high oil temperature, high
temperature, low coolant level, engine overspeed, engine under speed, low
battery charge. (if not included in the generator control system).
7. Electric jacket water heater with built in thermostat to keep coolant at a
constant temperature of at least 50 C.
8. Fully automatic battery charge 15A with automatic trickle/Boost switching.
9. One selector switch with OFF, MAINS, AUTO, TRANSFER position for
A.T.S. functions.
10. One set of indication lamps for mains and generator supply and on-load.
11. Complete set of wiring, power and control terminals, labels and
documentation for above items.
12. European enclosure made from 2mm sheet metal, wall mounted size
2000x1200x400mm W.D.H. floor standing, complete with front door locks
and insulation protection degree to IP55.