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WhatIstheDifferenceBetweenExplosion-ProofPositivePressureCabinetandExplosion-ProofDistributionBox|PerformanceCharacteristics

Performance Characteristics

What Is the Difference Between Explosion-Proof Positive Pressure Cabinet and Explosion-Proof Distribution Box

Principle:

Explosion-Proof Positive Pressure Cabinet:

Also known as a positive pressure type explosion-proof cabinet, its working principle involves injecting compressed air or other inert gases into the cabinet, creating a pressure difference between the inside and outside of the cabinet. This prevents smoke and combustible dust from entering, ensuring that no explosive environment forms due to a lack of contact with combustibles. This method effectively protects the equipment and components inside the cabinet.

explosion proof positive pressure cabinet

Explosion-Proof Distribution Cabinet:

Also referred to as an explosion-proof detection cabinet or distribution cabinet, it belongs to the category of explosion-proof products. Its explosion-proof principle allows hazardous gases or combustible dust to enter the cabinet and contain the explosion internally. The length, gap, and roughness are controlled to keep the explosive heat and sparks within the cabinet, preventing the spread of the explosion, although the equipment inside the cabinet may be damaged.

Features:

Explosion-Proof Positive Pressure Cabinet:

1. Comprises a cabinet body, an automatic control system, an air supply system, an alarm system, and a power distribution system. The primary chamber houses the power distribution system, while the auxiliary chamber contains the control system.

2. Utilizes a GGD frame structure with primary and secondary panels in a left-right arrangement, installed inside a cable trench seat and operated via front and rear doors.

3. Constructed using steel plate welding, with the main and auxiliary panels in a top-bottom structure, designed for hanging installation and front door maintenance.

4. Various steel plate bending and welding techniques are employed for manufacturing, with back and auxiliary panels in a front-back arrangement.

5. Available in ventilating and supplementary air types, depending on the air intake method.

6. Requires a clean air or nitrogen source, with a gas pressure range of 0.2 to 0.8 MPa. Normally, the instrument air volume at the user’s site is sufficient.

7. Typically uses cold-rolled steel plates, with stainless steel as an option upon request.

Explosion-Proof Distribution Cabinet:

1. Features a combined structure with explosion-proof distribution cabinets, bus ducts, and outlet boxes all reinforced.

2. Main materials include cast aluminum alloy, Q235 carbon steel, and 304 or 316 stainless steel.

3. Houses mini circuit breakers with high-breaking capacity, offering overload and short-circuit protection, with the option to add leakage protection.

4. Allows for the free combination of various modular circuit structures.

5. Complies with standard requirements.

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