7
Fig. 22
Then secure the capacitor unit with 2 off M5 screws (screw
length 10mm max. torque to 7Nm) and lock washers to the
tapped holes in the mechanism side plate (Figs 22 & 23).
Fig. 23
Pushbutton padlocking
Denies unauthorised access to ON/OFF pushbuttons (Fig. 24).
Fig. 24
Raise the appropriate window(s) and pass padlock hasp
through the locking eye.
Use padlock with hasp 8mm diameter maximum (6mm
minimum).
To latch OFF pushbutton in depressed position
Depress the button fully and hold. Using a flat bladed
screwdriver, turn the latch above the OFF button anti-
clockwise through 90°.
Access to both pushbutton and latch can be denied by
application of a padlock as above.
Circuit breaker security padlocking
To lock in the DISCONNECTED position for security.
With position indicator showing DISCONNECTED, remove
racking handle from the operating position.
Pull the locking bar until the locking eye is exposed and hold
while inserting padlock hasp.
Note: Up to three padlocks (required hasp diameter 6mm) may
be applied for extra security (Fig. 25).
Fig. 25
Locking bar
Safety shutters
Security padlocking
Ensure the circuit breaker is DISCONNECTED and the racking
handle removed.
Pull out TOP or BOTTOM shutter bar, or both as required,(Fig
26) to reveal the locking eye. Hold while inserting padlock(s).
(Hasp diameter 8mm max - 6mm min).
Note that the “BUSBAR” and “CIRCUIT” designation labels
provided are to be applied at installation.
Fig. 26
Prop open feature
For use by trained personnel
To inspect the main fixed contacts each shutter (or both) may
be propped open.
Warning. Unless previously isolated, the fixed contacts on
the incoming side will be ‘live’.
Remove the circuit breaker from its cassette. Push the slide
rail in until the mechanism opens the required shutter.
Note: Viewing the cassette from the front, the slide rail on the
left opens the bottom shutter. The right hand rail opens the top
shutter (Fig 27).
Top shutter propped open
Fig. 27
Pull the racking rails out to re-close the shutters.
Locking bars
Slide rails
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