What is the cause of transient voltage generation?

The instantaneous voltage will bring great harm, which will not only affect the normal and safe power supply of the power supply system, but also damage the electronic equipment. What is the cause of the transient voltage and how to test it?

Transient voltage, which is defined as the maximum instantaneous voltage that can be withstood by the output of the solid state relay at the specified ambient temperature without being broken down or lost. It is called transient voltage and refers to the occurrence of Some voltage phenomena in a very short time.

Transient voltage disturbances are classified into transient resonance, transient pulses, transient voltage rise or sag.

1. Transient resonance

Cause: switching of lines, loads and capacitor banks;

Consequences: damage to the insulation of the operating equipment, damage to electronic equipment, etc.

2, transient pulse

Cause: The line is subjected to lightning strikes or inductive circuit separation;

Consequence: Destroy the insulation of the running equipment.

3. Instantaneous voltage rise or sag

Cause: The line is subjected to lightning strikes or inductive circuit separation;

Consequences: The operation failure of the electrical equipment, the failure of the sensitive load can not operate normally.

Instantaneous voltage will bring great harm, which will not only affect the normal and safe power supply of the power supply system, but also directly affect personal safety and economic efficiency. Therefore, it is necessary to pay attention to transient voltage.