company news about EN 50399 Heat Release Rate Test Machine for Bundled Cables | IEC 60332-3-10 Cable Combustion Tester by DAXIAN

EN 50399: The Benchmark for Cable Heat Release and Smoke Production

Under the European Construction Products Regulation (CPR), electrical cables installed in buildings must be classified for reaction to fire. EN 50399 is the test standard that makes this classification possible: it measures heat release rate, total heat release, smoke production rate and total smoke production on vertically mounted bunched cables during flame spread. The data generated is used directly for the Euroclass ranking defined in EN 13501-6, from B2ca down to Eca.

For cable manufacturers exporting to the EU, an EN 50399 compliant test bench is therefore not optional equipment — it is the gateway to CE marking, to CPR declarations of performance and to tender lists that specify low-fire-hazard cables for tunnels, metro systems, hospitals, data centres and high-rise buildings.

Product Overview: DX8348B Bundle Wires and Cables Combustion & Heat Release Rate Test Machine

The DAXIAN DX8348B is a full-scale test apparatus designed to evaluate the ability of vertically installed bundled wires, cables or optical cables to suppress the vertical spread of flame under specified conditions, while simultaneously recording heat release and smoke production data required by EN 50399.

The equipment housing is fabricated entirely from SUS304 stainless steel. The complete system comprises the combustion chamber, air supply and mixing unit, standard steel ladder, emission purification system, ignition source and a PC-based control cabinet running professional LabVIEW software.

Standards Covered

Key Technical Parameters

• Combustion chamber: internal 1000 × 2000 × 4000 mm; external 1200 × 2200 × 5200 mm
• Control cabinet: 900 × 700 × 1600 mm, 19-inch standard rack with industrial computer
• Steel ladders: 500 × 3500 mm standard and 800 × 3500 mm wide version
• Air flow in chamber: 4500–5500 L/min; propane flow 3–30 L/min; compressed air 10–100 L/min
• Burner: ribbon-type propane blowtorch to GB/T 18380.31-2008, height 600 ± 5 mm with adjustable horizontal distance
• Instrumentation: anemometer 0.05–10 m/s, digital thermometer 0–400 °C
• Control: PC + LabVIEW professional software for automated test sequencing and data logging
• Safety: prepared for nitrogen or CO₂ fire extinguishing device
• Power supply: AC 380 V, 25 A; Weight: approx. 1500 kg

Typical Test Workflow

1. Mount the cable sample on the standard steel ladder at the specified bundle spacing and category (A, B, C or D).
2. Position the ribbon burner at 600 ± 5 mm and confirm gas flows with the Venturi mixer and flow meters.
3. Ignite for the standard exposure period while the software records heat release rate, smoke production and flame spread.
4. Export the measured data for Euroclass classification under EN 13501-6 and for the manufacturer's declaration of performance.

Applications

The DX8348B is used by cable manufacturers, third-party testing laboratories, certification bodies and research institutes working on power cables, control cables, instrumentation cables and fibre optic cables. It is particularly relevant for projects specifying halogen-free, low-smoke zero-halogen (LSZH) and fire-resistant cables for infrastructure, rolling stock, marine and renewable energy installations.

Why DAXIAN

Dongguan Daxian Instrument Equipment Co., Ltd. supplies fire testing equipment conforming to IEC, EN, ISO, BS, ASTM and GB standards, with wooden-case export packing, a 12-month warranty and delivery within 5–8 working days. Every system is factory tested before shipment, and our engineering team supports installation, commissioning and operator training.

Request a quotation or technical proposal for your EN 50399 heat release rate test programme today — our engineers will confirm the configuration that matches your cable categories and laboratory space.