The capacitive voltage divider of the voltage transformer is equipped with a gap protection between its ground terminal and the tail end. When the capacitor fails, a certain degree of high voltage will be generated at the tail end of the capacitor as a gap protection measure. The device can not only protect the voltage divider capacitor but also the federal filter. The top of the voltage transformer is equipped with a metal expander for protection. This is a complete sealing device that serves as an isolator, allowing air and oil to circulate, ensuring normal breathing for the voltage transformer. It also provides explosion protection in case of winding rupture failure. The top of the voltage transformer can withstand a certain high voltage, reducing corona and extending the service life of the voltage transformer.

There are many factors that can lead to the burnout of a CT. Once the underlying factors are identified, appropriate treatment measures can be taken for the CT. The main purpose is to inform everyone about the measures that have been taken.

Firstly, the current transformer is equipped with a circuit breaker, ensuring that the entire line will not experience power outages and that the branch fault waveform will not exhibit power outages. It is crucial to ensure that the branch circuit breaker can trip safely. The current transformer is connected to the back of the circuit breaker. When the current transformer fails, the circuit breaker can respond correctly to eliminate the fault. Conducting a high-voltage insulation test on the current transformer helps to quickly understand the degree of insulation aging of the current transformer. If the current transformer is too old, it should be replaced in time to avoid burning out the current transformer and causing power outages.

High and low voltage transformers are primarily used for high and low voltage applications. Since various measuring instruments and devices cannot directly handle high voltage, these transformers effectively protect relays and measuring instruments, as well as address production technology challenges. Due to the secondary measurement result of 10V from the voltage transformer, it standardizes and instrumentalizes the relay voltage coil. In fact, the principle and structure of a voltage transformer are composed of the same components as a regular transformer. The phase voltage insulation state of the primary winding of the voltage transformer varies with the level of voltage, having relatively more turns, while the secondary winding has fewer turns but does not short circuit. The secondary winding voltage is 10V, connected to the corresponding voltage circuit, determined by the current passing through the impedance. If there is a short circuit, it means the impedance is relatively low. If the flow increases, the secondary fuse will blow, causing damage to the voltage transformer.

The secondary circuit of the voltage transformer must be grounded to prevent insulation damage to equipment and personal injury.