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How to Choose Fireproof Cable Trays in the EU

ODN and passive infrastructure knowledge brief Published 29 Oct 2022

Prepared for preliminary research by the GESTIONVAL ODN knowledge desk. Confirm network topology, split ratio, box or cabinet capacity, joint closure rating and loss budget against current standards and product documentation.

Select fireproof cable trays based on fire rating, material, compliance with EU standards, and installation requirements to ensure safety and circuit integrity during a fire.Key Considerations for Selection

1. Fire Performance and Ratings Choose cable trays that maintain circuit integrity during fire. In the EU, fire-resistant trays are often classified by E60 or E90 ratings, indicating the system can function for 60 or 90 minutes under fire conditions without collapse or loss of electrical continuity . Ensure the tray has been tested with the installed cables according to recognized standards like EN 1363-1 or, in the absence of a European standard, DIN 4102-12 . 2. Material Selection

  • Indoor use: Painted steel or galvanized steel trays are common.
  • Outdoor or corrosive environments: Hot-dip galvanized steel, stainless steel, aluminum alloy, or fiberglass-reinforced plastic trays are recommended .
  • Fire-resistant coatings: Options include intumescent paint or aluminized polypropylene scrim wrapping, which insulate and reflect heat to protect cables . 3. Compliance and Certification
  • CE marking: Confirms conformity with EU safety standards.
  • Manufacturer fire test reports: Verify that the tray system has been tested with the intended cable types.
  • Local regulations: Some projects may require additional certifications or adherence to specific fire-tested assemblies . 4. Installation and Accessories
  • Follow the manufacturer's installation instructions strictly to maintain fire performance .
  • Use fire-rated fastenings and cable cleats to prevent collapse and maintain circuit integrity .
  • Ensure proper segregation of power and signal cables to reduce interference and maintain safety . 5. Tray Dimensions and Load Capacity Select tray width and thickness according to the number, weight, and type of cables. Ensure mechanical strength is sufficient to prevent deformation under full load . 6. Maintenance and Inspection
  • Periodically inspect fireproof trays for coating integrity, rust, moisture, or UV damage.
  • Ensure that any repairs or modifications maintain the original fire rating .
Summary

When choosing fireproof cable trays in the EU, prioritize fire rating (E60/E90), material suitability, compliance with EN or DIN standards, proper installation, and ongoing maintenance. Verify that the tray system has been tested with the intended cables and that all accessories are fire-rated to ensure circuit integrity and safety during a fire .

How to Choose Fireproof Cable Trays in the EU - GESTIONVAL ODN INFRASTRUCTURE S.L. [PDF]

How to Choose Fireproof Cable Trays in the EU

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Technical note

This reference is intended for preliminary ODN and passive infrastructure research. Topology, split ratio, box or cabinet capacity, closure rating, cable type, test limits and applicable standards must be verified for the specific project.

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