The equipment requirements for an explosion-proof electric hoist are stringent to ensure safety in hazardous environments where explosive gases, vapors, or dust may be present. Below are the key requirements:

1. Explosion-Proof Certification and Standards Compliance

The hoist must comply with relevant national and international explosion-proof standards, such as:

IECEx (International Electrotechnical Commission System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres)

ATEX (Directive 2014/34/EU for equipment and protective systems intended for use in potentially explosive atmospheres)

GB standards (China's national standards for explosion-proof equipment, e.g., GB 3836 series for explosive gas environments and GB 12476 series for explosive dust environments).

The hoist must bear the appropriate explosion-proof certification mark (e.g., Ex d, Ex e, Ex tD, etc.) indicating its suitability for specific explosive environments.

2. Explosion-Proof Enclosure and Construction

The hoist's electrical components, including the motor, control box, and wiring, must be housed in explosion-proof enclosures designed to prevent the ignition of surrounding explosive atmospheres.

Enclosures must be rated for the specific explosive environment (e.g., Zone 1, Zone 2 for gases; Zone 21, Zone 22 for dust).

Materials used in construction must be non-sparking and resistant to corrosion and mechanical damage.

3. Electrical Components

Motor: Must be explosion-proof, typically with a flameproof enclosure (Ex d) or increased safety (Ex e) design.

Control System: Includes explosion-proof contactors, relays, and switches. The control panel must be sealed to prevent the ingress of explosive gases or dust.

Wiring: Must be explosion-proof, with cable glands and conduits designed to maintain the integrity of the explosion-proof enclosure.

4. Mechanical Components

Brakes: Must be designed to prevent overheating and sparking. Explosion-proof brakes or brakes with non-sparking materials are required.

Gears and Chains: Must be lubricated to prevent friction-induced sparks. Non-sparking materials may be used for critical components.

Hooks and Load Chain: Must be robust and designed to prevent accidental disengagement. The load chain should be resistant to wear and corrosion.

5. Limit Switches and Safety Devices

Upper and Lower Limit Switches: Must be explosion-proof and designed to cut off power to the hoist when the load reaches its maximum or minimum travel limits.

Overload Protection: Must be included to prevent the hoist from lifting loads beyond its rated capacity.

Emergency Stop Button: Must be easily accessible and explosion-proof.

6. Environmental Conditions

The hoist must be suitable for the ambient temperature, humidity, and altitude of the installation site.

For outdoor use, additional protection against weather elements (e.g., IP65 or higher ingress protection rating) may be required.

7. Installation and Maintenance

The hoist must be installed by qualified personnel in accordance with the manufacturer's instructions and relevant standards.

Regular maintenance and inspection are required to ensure the continued explosion-proof integrity of the equipment.

Maintenance tools and procedures must not compromise the explosion-proof enclosure.

8. Documentation and Labeling

The hoist must be accompanied by detailed documentation, including explosion-proof certification, installation manuals, and maintenance instructions.

Clear labeling must indicate the explosion-proof rating, serial number, and other relevant information.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment