DEH-41473
AKD-20 AR / Entellisys AR Low-voltage Switchgear
Section 8. Operating the Switchgear
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Padlocking Features
The circuit breaker compartment is provided with several
padlocking features as a standard. Optional padlocking front
access and rear access doors are also available.
Padlocking the Racking Access Door
The racking access door can be padlocked to prevent access
to the racking mechanism. The cassette can be padlocked
with the breaker in any position or without the breaker
installed. Up to three padlocks can be placed on a cassette.
A padlock with a hasp thickness of at least 0.120 inches
should be used to padlock the racking shaft door. To padlock
cassette racking door, pull out the racking door locking tab
and insert padlock (Figure 8.13).
Padlocking the Draw-out Rails
DANGER: Electrical arc flash hazard. Personal
protection equipment required. Turn off power to the
equipment before working inside.
WARNING: The breaker compartment door must be
closed and latched to maintain the integrity of the arc
resistant enclosure. The breaker compartment door should
not be opened when the circuit breaker is closed and in the
connected position when the equipment is energized.
WARNING: When a circuit breaker is removed from its
compartment. The future cassette barrier and the future
breaker door cover must be installed and the circuit
breaker compartment door closed and latched to maintain
the integrity of the arc resistant enclosure.
The circuit breaker compartment door must be opened to put
the padlock on; however, there is no interference with the
door after the padlock has been placed in position.
Padlocks will prevent the acceptance of breakers in the
compartment.
The padlock device on the draw-out rails will accept up to
three padlocks on both the left and right sides of the
compartment (Figure 8.14).
Padlocking the Shutter Assembly
The shutter on each cubicle can be padlocked to prevent
access to the live primary conductors. The shutter can be
padlocked without the breaker installed. One padlock can be
placed on a cassette. To padlock the shutter, pull out the
shutter locking tab and insert padlock (Figure 8.15). Pulling
out the shutter locking tab actuates a rod that goes through
moving shutter parts that prevents it from opening.
Shutters are provided as a standard for circuit breaker
compartments in both AKD-20 AR and Entellisys AR
equipment. Refer to DEH-41696 for ordering or further
information for a shutter assembly.
Figure 8.13 Circuit breaker racking door padlock device
Figure 8.14 Circuit breaker draw-out rail padlock device
Figure 8.15 Circuit breaker shutter padlock device
