The secondary side of the voltage transformer must not be short circuited during operation

Due to the high short-circuit current generated during a short circuit, the transformer may be burnt out. Therefore, fuses are installed on both the primary and secondary sides of the voltage transformer for protection.
One end of the secondary side of the voltage transformer is grounded. This is to prevent the primary high voltage from entering the secondary side when the insulation of the primary and secondary coils is broken down, endangering personal and equipment safety.
The secondary side of the current transformer is close to a short circuit during operation. The rated current of the secondary coil is 5A
The secondary side of the current transformer is never allowed to open circuit during operation,
One end of the secondary side of the current transformer is grounded to prevent high voltage from entering the secondary side when the insulation of its primary and secondary coils is broken down.
When connecting current transformers, attention should be paid to the polarity of their primary and secondary coils. In China, the polarity reduction labeling method is used for transformers.
During installation, attention should be paid to correct and reliable wiring, and fuses or switches should not be connected to the secondary side. Even if for some reason the instrument or other device on the secondary side needs to be removed, short circuit the secondary side first before proceeding with the removal.
Low voltage switches refer to isolating switches, circuit breakers, fuses, etc. below 1KV
The load controlled by the low-voltage distribution device should be clearly divided, and it is strictly prohibited to control multiple switches and mix them up.