Table of Contents
Advertisement
Operating the circuit-breaker panel
10.5 Closing the high-voltage door
Instruction label on high-voltage door:
In addition to these instructions, an instruction label on the high-voltage door describes safe closing of the
high-voltage door before executing a switching operation.
Fig. 35: Instruction label on high-voltage door
32
WARNING
Reduced safety
The closed high-voltage door is an important safety element of the switchgear.
The high-voltage door is exclusively opened for performing operational activities
inside the switching-device compartment, such as removing or inserting a
withdrawable circuit-breaker.
Close the high-voltage door:
If an activity inside the switching-device compartment is interrupted.
Immediately after an activity inside the switching-device compartment was
completed.
Before leaving the panel front.
CAUTION
Injury
The mechanism inside a withdrawable part can cause injuries by getting
squeezed, caught or cut.
Do not remove any parts of the covering.
HINT
Unexpected motor noise and vibration
When auxiliary voltage is applied, a motor inside the circuit-breaker starts
immediately after plugging on the low-voltage connector, in order to charge the
spring energy store. This is a permissible operating state.
Expect motor noise and low vibration.
NXAIR M
139-2021.9 / 07
Advertisement
Table of Contents
