Pay attention to the suitability of choosing ppe

In an explosion hazardous environment, the installation location, laying method, wire material, and connection method of the explosion-proof electrical equipment line should be compatible with the regional hazard class and should meet the following requirements.

(1) Location.

Electrical wiring should be laid at a location where the risk of explosion is small or distant from the source of release. Electrical lines should be laid along the external walls of buildings that are at risk of explosion. When the dangerous gases or vapours are heavier than air, the electrical lines should be laid at high places, and the cables should be buried directly or covered with cable trenches; When the gas or vapor is lighter than air, the electrical line should be laid in a low place, and the cable should be laid with a cable trench. The overhead lines below 10kV and 10kV shall not cross over the dangerous explosion environment; when the overhead line is adjacent to the explosion hazardous environment, the distance between them shall not be less than 1.5 times the height of the tower.

(2) Wiring and wiring.

Explosion hazard environment mainly uses explosion-proof steel pipe wiring and cable wiring. Use thick-walled pipes as much as possible, and some may do pressure test.

1.40A can choose 6mm2 YJV cable.

2.380V, 6KW optional 3X4+1X2.5

3. Three-phase four-wire 220V, 1.7KW, 10A optional 2.5mm2

4. Optional 2.5mm2 for single phase 220V, 1.65KW, 8A devices

5. Single phase 380V, 60A equipment optional 2x10MM2

6. When the device is 380V, 100A should choose 3X35+16 In fact, 3*50+25 and 4*35+16 The first digit of 3 and 4 is to see your needs If the device needs zero line and ground then use Five cores, if you do not need the zero line can be used four cores (three phase line and a ground wire on the line) the zero line and the ground line should not be less than 1/2 of the phase line.

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