Explosion-proof distribution boxes must be installed following strict safety, alignment, and wiring standards to ensure safe operation in hazardous environments.

Site Preparation and Foundation

Before installation, ensure the control room or installation site is clean, safe, and fully prepared, with all interior construction completed. The foundation must be inspected and approved to support the weight and alignment of the distribution boxes .

Equipment Inspection

Upon delivery, inspect each distribution box for deformations, paint loss, completeness of instruments, accessories, and manuals. Record any discrepancies before proceeding .

Placement and Alignment

• Position the boxes on the foundation steel according to the layout plan.
• Align the ends and use a line at two-thirds height from the bottom to ensure proper alignment.
• Adjust with 0.5mm shims, with a maximum of three shims per spot.
• Ensure the top level difference between neighboring boxes is within 2mm, and the total unevenness does not exceed 5mm .

Fixing and Connection

• Secure the boxes using bolts and galvanized screws.
• Weld high and low voltage switchboxes to reserved angle steels firmly.
• Cover cable layers with checkered steel plates and insulate visible parts with 1200mm x 10mm insulation .

Wiring and Component Installation

• Use stainless steel boxes (Baosteel 304 or above) with a minimum thickness of 4mm .
• Electrical components must maintain proper clearance and creepage distances.
• Use galvanized fasteners for wiring, black wires for secondary wiring, and enameled tin for conductor connections.
• Arrange wiring neatly, tie into bundles with nylon tape, and ensure switch terminals match wire cross-sections .

Safety and Compliance

• Ensure all components comply with national or international standards (e.g., GB7251 or ATEX-certified equivalents) for explosion-proof environments .
• Explosion-proof enclosures must contain internal explosions and prevent ignition of external volatile atmospheres. Materials like 316L stainless steel or marine-grade aluminum are recommended for chemical or offshore environments .

Testing and Commissioning

• Conduct handover tests, pre-operation inspections, and trial operations before full commissioning .
• Regular maintenance and inspection should be performed in non-explosive environments to ensure long-term safety and reliability .

Key Considerations

• Maintain proper spacing and alignment between boxes.
• Ensure thermal management to prevent overheating of electrical components.
• Follow manufacturer guidelines for cable routing, power supply, and accessory installation . By following these steps, explosion-proof distribution boxes in Azerbaijan can be installed safely, ensuring compliance with safety standards and reliable operation in hazardous industrial environments.