Explosion-proof Lighting (Power) Distribution Box

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Product Introduction: Explosion-proof distribution boxes are distribution boxes with explosion-proof performance, mainly including explosion-proof lighting distribution boxes, explosion-proof power distribution boxes, and explosion-proof anti-corrosion distribution boxes.

When purchasing explosion-proof distribution boxes, it is essential to choose a safe and reliable manufacturer to ensure their quality meets standards and complies with national explosion-proof regulations. You can trust Shou'an Explosion-Proof to provide you with a sense of security. The production technical indicators of distribution boxes must comply with regulations and design requirements, and they should be produced according to the specified product standards. All components and technical parameters must meet the requirements of the national standard GB7251. After sample production, relevant personnel from the construction unit, supervision unit, and construction unit must be notified for acceptance before full-scale production can proceed.

Explosion-Proof Protection: Explosion-proof distribution boxes are designed according to the standard for electrical equipment used in explosive gas environments. They assemble switchgear, measuring instruments, protective devices, and auxiliary equipment in sealed or semi-sealed cabinets or panels, connecting or disconnecting circuits through automatic or manual switches. In case of faults or abnormal operations, they protect electrical equipment while using measuring instruments to display various parameters for adjusting the circuits inside the explosion-proof distribution box. This strongly ensures the safety of the product during use.

Suitable Range of Explosion-Proof Distribution Boxes

1. Hazardous locations with explosive gases: Zone 1, Zone 2

2. Gas mixtures: IIA, IIB, IIC

3. Combustible dust environments: Zone 20, Zone 21, Zone 22

4. Temperature classes: T1-T6

5. Explosion-proof markings: Exde IIBT6, *Exde IICT6

Main Structure of Explosion-Proof Distribution Boxes

The explosion-proof distribution box shell is made of ZL102 cast aluminum alloy or high-quality stainless steel plates welded to form a flameproof main chamber and a terminal chamber. The main chamber contains C65N and DZ47 series circuit breakers, operated via a mechanism and an external handle. Each circuit has "on" and "off" indicators, along with indicator lights. The terminal chamber has terminals connected to the main chamber, cable entry devices, and internal and external grounding screws.

Product Features of Explosion-Proof Distribution Boxes

1. This product is a composite type. The switch box adopts a flameproof structure, while the busbar box and outlet box adopt an increased safety structure. Modular design allows free selection of various circuits.

2. Equipped with high-breaking small circuit breakers, it provides overload and short-circuit protection. Compact and rational structure, strong versatility, flexible and convenient operation, and good tactile feedback.

3. All fasteners are made of corrosion-resistant 304 stainless steel.

4. Suitable for both conduit and cable wiring.

5. Customizable according to user requirements.

Usage Instructions for Explosion-Proof Distribution Boxes

1. Based on the actual lighting needs of the worksite, determine the installation position and method of the luminaire. Then, prepare a three-core cable of the corresponding length according to the distance from the luminaire to the 220V power connection point (if using conduit wiring, thread the three-core cable through the conduit to the luminaire installation point).

2. First, remove the fixing screws on the terminal chamber and pull out the terminal part of the junction box. Take the sealing ring and connector (with set screws) from the packaging and slide them onto the cable. Then, connect one end of the three-core cable to the terminals marked "L," "N," and ground inside the box. Secure the cable with a cable clamp and fasten it with screws. Tighten the connector, compress the sealing ring, and tighten the set screw from the side.

3. Screw the components from step 2 into the conduit, lock them with set screws from the side, then install the lamp body along the guide rails of the junction box and tighten the screws on the panel.

4. Finally, connect the other end of the three-core cable to the 220V power supply as required by the explosion-proof distribution box.

5. When replacing the bulb, first cut off the power supply. Then, use a hex key to remove the set screws on the housing, unscrew the lamp cover about 6 turns with a large screwdriver or other tool, and carefully remove the lamp cover by hand. Unscrew the old bulb and replace it with a new one.

Functions and Applications of Explosion-Proof Distribution Boxes in Explosive Environments:

1. Containment-Type Explosion-Proof Distribution Box:

This is a relatively traditional explosion-proof form. It places conductive parts inside the housing and prevents the transmission of explosion products outward by increasing the joint surfaces of the explosion-proof distribution box housing. That is, explosive mixed gases enter the explosion-proof box and are ignited by sparks or arcs inside, but when the explosion propagates outward, the joint surfaces of the distribution box cool and disperse the explosion products to a safe temperature, isolating the explosion and preventing outward transmission.

2. Isolation-Type Explosion-Proof Distribution Box:

This type of explosion-proof design seals electrical components that are prone to generating arcs or sparks inside the explosion-proof distribution box. The box is sealed by melting, pressing, or adhesive methods to prevent explosive mixtures from entering the interior, thereby achieving explosion-proof purposes.

3. Medium Isolation-Type Explosion-Proof Distribution Box:

This design places conductive parts of electrical equipment in a safe medium, preventing ignition sources from contacting explosive mixtures, thus achieving explosion-proof goals.

4. Controlled Ignition Source-Type Explosion-Proof Distribution Box:

This type uses high-quality insulating materials, reduces temperature rise, increases electrical clearance, and creepage distance to minimize the possibility of sparks, arcs, and dangerous temperatures during normal operation of the explosion-proof distribution box, thereby reducing safety hazards in production.

Explosion-proof distribution boxes are enclosures used for power distribution and wiring in industrial production. Enterprises should choose explosion-proof distribution boxes suitable for their production environment based on their specific factors.