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Determine the clearance
- Jun 29, 2018 -

Determine the clearance.jpg

1. Determine the operating voltage peak and effective value;

2. Determine the equipment's supply voltage and the type of power supply facility;

3. According to the over-voltage category to determine the size of the transient over-voltage into the device;

4. Determine the pollution level of the equipment;

5. Determine the type of insulation across the gap (functional insulation, basic insulation, supplementary insulation, reinforced insulation).