Siemens NXAIR Operating Instructions Manual page 244

Operating the removable voltage transformers
Fig. 432: Turning 90° counter-clockwise to unlock
To rack the removable voltage transformers, push the racking tool into the voltage
transformer compartment as far as it will go (end position).
Fig. 433: Pushing the racking tool to rack
Turn the racking tool 90° clockwise to lock the racking mechanism.
244
NOTICE
Maloperation
Turning the racking tool while racking the removable voltage transformers in the
voltage transformer compartment can cause damages.
Rack the removable voltage transformers always up to the end position.
Turn the racking tool only in stable end positions of the removable voltage
transformers.
NXAIR / ≤ 40 kA
110-0134.9 / 14