When the transformer is energized, the on-load voltage regulating switch is operated electrically, and the action should be normal. During operation, the voltage on each side should be within the allowable range of the system voltage.
Under the live conditions of the transformer, the electric operation of the load-on voltage switch should be normal. During operation, the voltage on each side should be within the allowable range of the system voltage.
The operation of on load tap changer under live condition of transformer shall be normal. During operation, the voltage of each side shall be within the allowable range of system voltage.<br>