Specifications
NAIROBI OPERATIONAL HUB
UNOPS Building, UN Lane, Off UN Avenue Tel: +254 20 7621120
P.O Box 783,Village Market, 00621 E-mail: info@unops.org
Nairobi, Kenya Website: www.unops.org
UNOPS is ISO 9001 certified
C. The panel shall be of the cellular cubical type class 2CC FBA and shall be
of the folded sheet steel construction fabricated out of electro galvanized
cold rolled sheets of minimum 2mm thickness for body and frame work
and not less than 1.5mm for doors and cover plates.
D. The panels, after fabrication, shall be thoroughly cleaned in a vapor
degreasing tank to remove all traces of oil and wax and provided with a
coat of electrostatic, polyester powder coating, light grey colour, shade
No. 10A03 to BS 4800.
E. All doors and removable cover plates shall be provided with neoprene
gasket so as to obtain degree of protection IP53 to IEC 144.
F. Each outgoing breaker shall be enclosed in its own compartment (cell)
fitted with a hinged door interlocked with the operating handle in such a
way that:
1. It shall be possible to open the door only when the handle is in ‘OFF’
position.
2. It shall not be possible to switch the unit ‘ON’ when the door is open.
Moreover, no live parts shall be exposed when the compartment door is
open.
G. Protection against shock shall be provided in accordance with the
requirement of BS 5486 Part 1.
H. The switchboard shall be of the rear access pattern and vertical cable way
shall be provided in each section of the switchboard. The cable way shall
be provided with bolt-on covers. All terminals in the cable way shall be
fully shrouded to prevent accidental contact when the covers are removed.
J. All external bolts or screw heads shall be chrome or cadmium plated.
K. The equipment in the switchboard shall be accessible with indicating
instruments mounted not higher than 1.8m. And the centerlines of
operating devices not higher than 1.8m. Above switchboard base. The
switchboard shall be properly fixed to the floor with foundation bolts
grouted in the floor or bolted to channels laid across the cable trench.
L. The switchboards shall have top or bottom cable entry as required.
Basically, main incoming cables shall be bottom entry and outgoing cables
top entry.