Bundle Wire and Cable Burning Test Machine Manufacturer | IEC 60332-3 & EN 50399 Cable Fire Test Equipment
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Whats/App: +86 156 1874 6768
Web: standard-groups.com
E-mail：info@standard-groups。com
Features
1. Equipped with a standard stainless steel ladder, conforming to the requirements of GB/T18380.31;
2. Two sample support racks are included;
3. The ladder is made of stainless steel, which is corrosion-resistant and easy to clean;
4. An air inlet port measuring 800±20(W) × 400±10(D) is located in the lower part of the chamber, 150±10mm from the front of the chamber;
5. A K-type armored thermocouple with a 2mm diameter is installed inside the chamber;
6. The airflow inside the combustion chamber can be stably controlled at (5000±500) L/min.
Parameters
| Feature/Specification | Details |
|---|---|
| Overall Space Size | 2500mm (length) * 3200mm (width) * 4500mm (height) |
| Material | Thermal insulation with a heat transfer coefficient of 0.7W∙m⁻²∙K⁻¹, i.e., coated 65mm thick mineral fiber stainless steel plate |
| Air Source | Control gas flow through the box at (5000 ± 500) L/min, stabilize air flow rate during test; spraying device to forcibly stop burning after test completion |
| Steel Ladder Type | Standard steel ladder width: 500mm; Wide steel ladder width: 800mm |
| Discharge Purification Device | Test box equipped with a collection and washing smoke device that does not alter air flow through the test box |
| Ignition Source | One or two belt-type propane gas burners with supporting flow meters and venturi mixers; fire supply surface drilled with 242 flat metal plates with 1.32mm diameter apertures, center distance of 3.2mm, staggered in three rows of 81. 80. and 81 holes respectively, within a nominal size of 257×4.5mm; additional guide holes on each side of spout plate to maintain steady flame burning |
| a) Flow Control | Each burner equipped with a rotameter for accurate control of propane and air inflow rate |
| b) Airflow Rate (Test Conditions: 100kPa, 20℃) | Air: (77.7 ± 4.8) L/min; Propane: (13.5 ± 0.5) L/min |
| Ignition Source Position | Torch placed horizontally, (75 ± 5) mm away from front surface of cable sample, (600 ± 5) mm away from bottom of test box, symmetrical with axis of steel ladder; ignition point located in center between two rungs of steel ladder, at least 500mm away from lower end of sample |
| Observation Window | Tempered glass observation window surrounded by stainless steel edge |
| Exhaust System | Spiral exhaust fan; 2 sealing push and pull plates; 2.0mm stainless steel |
| Air Inlet | 1 (Φ160mm) |
| Bottom Fixed Frame | 40mm * 40mm square tube production |
Test Procedures
Sample Preparation: Cut a wire harness or cable sample of the specified length (e.g., ≥600mm) according to the standard, and remove the outer sheath from both ends (if necessary), ensuring the sample condition meets the test requirements.
Equipment Inspection: Check the sealing of the combustion chamber, gas supply, ignition device, and ventilation system to ensure the equipment is in normal working condition.
Sample Installation: Secure the sample horizontally on the support inside the combustion chamber, adjust the distance between the sample and the flame nozzle (e.g., 175mm), ensuring the lower end of the sample is aligned with the top of the burner.
Parameter Setting: Set the burning time (e.g., 15 seconds/30 seconds), flame height (e.g., 125mm), and gas supply pressure according to the test standard (e.g., UL1581. IEC 60332. etc.).
Start the Test: Ignite the flame, and after the flame stabilizes, start the test. Observe the burning of the sample, record the burning time, flame spread distance, and whether the dripping material ignites the filter paper below.
End of Test: After the burning time is reached or the sample is completely burned out, turn off the gas, activate the ventilation system to clear the smoke, and remove the sample residue.
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