29
A K D - 20 A N D E NTE LLYS I S
LO W VO LTAG E S W I TC H G E A R
Space heaters, Fig. 3.31 are provided as standard
equipment. They provide protection against
condensation of moisture that could, in
combination with air-borne contaminants,
deteriorate insulation or cause corrosion.
One 1000-watt, 240-volt, operating at 120V (250-
watts) AC heater is located on the floor of the bus
compartment of each outdoor switchgear section.
The heaters should be energized at all times to
prevent condensation within the switchgear.
Heaters are fed by the control power transformer.
The on-off control switch is located in the walk-in
front aisle.
1. Rear cable compartment floor (standard on
outdoor - optional on indoor) (not shown)
2. Run backs and cable lugs (compression type)
3. Space heater
Outdoor switchgear may also be provided without
the walk-in front aisle. Non-walk-in outdoor
equipment is not equipped with an overhead
breaker lifting device. A portable breaker lifting
device, available as an optional accessory, is used
for lifting the EntelliGuard breakers.
—
Fig. 3.31
Location of space heater
(indoor enclosure)
2
3