What Standards Should Be Followed When Selecting The Size Of A Surge Protector?
The primary function of a surge protective device is to prevent overvoltage. When the voltage reaches a certain range, such as when a lightning strike or other factors cause excessive voltage, the surge protector will break down and conduct. So, how do you choose a suitable surge protector? What standards should be followed when selecting one?
The most important factor in selecting a surge protector is the power supply. Surge protection is divided into three levels. Level 1 surge protection requires a current of not less than 60kA between the transformer and the main distribution panel surge protector; Level 2 surge protection requires not less than 40kA; and Level 3 surge protection requires not less than 20kA. These are the key factors to consider when selecting a surge protector.
1. Level 1 Surge Protector
- When selecting a surge protection device, a surge protector with a suitable waveform should be chosen. However, the specific model should be selected based on the actual situation.
2. Level 2 Surge Protector
- How to choose a suitable surge protector? Its maximum current carrying capacity is much higher than that of a Level 1 surge protector, reaching 60kA (8/20μs).
3. Three-stage surge protector
- Its maximum current carrying capacity is 40kA (8/20μs).
4. Four-stage surge protector
- Also known as the final-stage surge protector, its maximum current carrying capacity is much lower, only 20kA (8/20μs).
