Product Series
Fire-resistant cable
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- Product Details
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Product NamePRODUCT Name
Fire-resistant cable
Product ApplicationsProduct applicationApplies to operating conditions related to fire safety and fire rescue, such as the power supply and control circuits for emergency facilities like fire-fighting equipment and emergency exit lights.
Technical ParametersTechnical parameter1. Feature requirements:
1.1. Physical Requirements:
Insulation: HTFE, Tensile Strength: 5500 PSI Min, Elongation: 300% Min
Outer sheath: EPDM, tensile strength ≥ 1000 PSI, elongation at break ≥ 100%
1.2. Bending Test:
(Tested after undergoing thermal shock testing) Minimum of 100,000 cycles @ 907 grams, 20 cycles per minute (bending angle: ±90°, rod diameter: 30 mm; no short circuits or damage to the outer jacket shall occur).
1.3 Tensile Testing: 40 LBS Min/1 Minute—no open circuits, short circuits, or damage to the outer jacket shall occur (one sample is tested repeatedly five times).
1.4. Insulation Resistance: 250V DC, 10 MΩ min between conductors
1.5. Withstand Voltage: 250V AC for 1 minute
1.6. Operating temperature: -30℃ ~ +60℃
1.7. Storage temperature: -57℃ ~ +85℃
1.8. Operating Voltage: 20V DC Max
1.9. Flammability Test: VW-1
1.10. Thermal Shock: The sample is first placed at -57℃ for 2 hours, then at +80℃ for 2 hours. This cycle—switching between the two temperatures every 15 seconds—is repeated continuously for 24 hours. After the test is completed, a bending test is performed (5 pieces must be tested before shipment).
2. Testing items for the wire baking section:
2.1. Tensile Test (5.5X): After undergoing 6 cycles of thermal shock at temperatures ranging from -57℃ to 80℃ for 2 hours, the material is subjected to tensile testing under the following conditions: 5.5X, 300,000 cycles. Resistance change rate < 1 ohm.
2.2. Tensile Test (3X): Perform a tensile test at 3X, with 70,000 cycles; the resistance value change rate shall not exceed 10% of the initial value. After 5 minutes, the length of the heated wire shall recover to within 115%.
2.3. Torsion Testing: Torsion test cycles > 6,000 (internal factory requirement: over 20,000 cycles); resistance change rate < 1 ohm.
2.4. Swing: After undergoing 6 cycles of cold and thermal shock ranging from -57℃ to 80℃ for 2 hours, with a suspended weight of 907g and a swing angle of ±90 degrees at a frequency of 20 cycles per minute, the device must withstand more than 100,000 cycles.
2.5. Traction: When the hanging weight of the baked wire is 250 g, the elongation is 1.4 to 1.65 times the original initial value.
2.6. Ultimate Tensile Strength (6.5X): Record the insulation resistance (500 MΩ) at 300 V and the connection resistance every 10,000 cycles; test each core wire individually. Judgment: If the connection resistance differs from the initial T0 resistance by more than 1 ohm, the result is NG. The test must be conducted at least 100,000 times.
2.7. Combustion Test: (NFPA1802-8.9) Place the specimen in a 915×915×1220 mm oven, preheat it to 95 ± 2°C, and remove it after 15 minutes. Conduct the combustion test within 20 seconds. The flame peak temperature shall be between 815 and 1150°C, lasting for 10 seconds plus or minus 1/4 second. After removing the flame, the specimen must extinguish within 2.2 seconds to pass the test.
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