Operating the removable voltage transformers
139-2021.9 / 07 NXAIR M 113
15.5 Taking the removable voltage transformers out of the panel
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 and/or removable voltage transformers.
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.
Preconditions
Withdrawable circuit-breaker in test position
Removable voltage transformers in test position
High-voltage door open
Low-voltage connector plugged on
Service truck available
Removing the low-voltage connector
To detach the low-voltage connector, push the longitudinal fastener (1) of the coupling
downwards.
Remove the low-voltage connector (2) carefully upwards.
Fig. 183: Detaching and removing the low-voltage connector
Stow the low-voltage connector away in the shelf on the left inside the panel.
To Next Page
Loading...
