Trial Operation of Industrial Grade Explosion-proof Telephone_Safety Inspection of Equipment in Operation

Trial Operation of Industrial Grade Explosion-proof Telephone_Safety Inspection of Equipment in Operation

Although there are various types of mobile phones, they are constantly changing with the progress of the times. However, there is still a need for telephones in life, especially industrial-grade explosion-proof telephones. Explosion-proof telephones are widely used in some special dangerous occasions. The next product that Shenzhen Eight Baitong Smart will talk about is industrial-grade explosion-proof telephones.

1. Trial operation of explosion-proof telephone equipment

The shell temperature of explosion-proof telephone equipment does not exceed the specified value, including the internal temperature of increased safety and non-sparking equipment.

After the internal wiring of the junction box is tightened, the electrical clearance and creepage distance between the exposed live parts and between the metal shell should meet the requirements.

The air outlet of positive pressure type electrical equipment should be free of sparks. When the wind pressure and air pressure are reduced, the micro-pressure relay should act reliably.

The protective devices and interlocking devices of explosion-proof electrical equipment should act correctly and reliably.

2. Safety inspection of explosion-proof telephone equipment in operation

Explosion-proof electrical equipment and wires in use should essentially ensure the safe operation of the equipment. Prevent the occurrence of electric sparks, arcs and dangerous temperatures due to improper installation of equipment, defects, improper maintenance and other reasons, which may cause fire or explosion accidents.

Whether the explosion-proof electrical equipment is divided according to the hazardous area to ensure the explosion-proof structure of the corresponding explosion-proof electrical equipment.

Whether to determine the corresponding explosion-proof electrical equipment according to the level and group of the explosive mixture.

Whether the overall explosion-proof performance of explosion-proof electrical appliances meets the design requirements, including instrument alarms and communication equipment.

Whether to strictly control the use of mobile electrical appliances and sockets.

3. Explosion-proof telephone electrical wiring

Laying of lines:

Is it far away from the source of release;

Whether to determine the height of the cable or wire according to the specific gravity of the explosive gas;

Whether the hole of the line is blocked;

Whether the line avoids the damaged area;

Technical requirements for line laying:

Whether the rated voltage is not less than 500V;

The current carrying capacity of the wire is not less than 1.25 times of the rated current of the fuse;

Whether the galvanized steel pipe is sealed and whether the thread engagement meets the requirements;

The cross-section of cables, etc. ≥2.5mm (a copper core area);

Zone 1 of the junction box is of flameproof type, and zone 2 is of flameproof or increased safety type. The wires are strictly prohibited to be connected by twisting.

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Tag: explosion-proof telephone, industrial explosion-proof telephone

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