This large combustion cabinet is strictly produced in accordance with UL1581 section 1080.1-1080.14 standards and fully complies with the VW-1 (Vehicle specific) Flame Test combustion test standards. Applicable to VW-1 of UL1581, UL13, UL444, UL1655, as well as FT-1 and FT-2 of CSA. Economically applicable and widely used in the wire and cable industry

The entire experiment was conducted in a sealed laboratory with a volume of 4.32 cubic meters.

Test method: Adjust the flame height, place the top of the flame under the specimen, burn for 15 seconds, extinguish for 15 seconds, repeat 5 times, and check the condition of the specimen. The combustion extinguishment time and number of repetitions can be set, and automatic operation can be performed.

Main reference standards: This testing device meets the requirements of UL1581-2001 sections 1060 (vertical/FT1 test, 1080 section VW-1 combustion test, 1090 section (horizontal combustion test for electrical wires), and 1100 section (horizontal specimen/FT2 combustion test).

Technical specifications:

1. The test box adopts an aluminum alloy frame+electrolytic plate electrostatic spraying, which has the characteristics of beautiful appearance, rust prevention and corrosion prevention

2. The top of the box is equipped with a strong ventilation and smoke exhaust system. When the test is completed, it opens simultaneously with the air supply system, which can discharge the exhaust gas outdoors. During the test, this system is in a closed state.

3. The rear side of the box is equipped with an air supply door. At the completion of the experiment, when the exhaust system is turned on, move it into the box

During the air supply test, this enclosure needs to be closed.

4. The front of the box is equipped with a tempered glass observation window that can be sealed during the testing process, making it easy to observe and test

Verify the situation.

5. There is a hole below the glass observation window where hands and arms can be extended to operate the test chamber. This hole is equipped with sealed gloves, and the operator uses the sealed gloves to operate the combustion nozzle. (6) The volume specification of the test chamber is: effective space of 2.4m (length) * 1m (width) 1.8m (height)

Volume: 4.32m3. The external dimensions are 2.4m (length) * 1m (width) and 2.5m (height).

Temperature measurement system：

(1) The structure of the thermal sensor (copper conduit and thermocouple) should be electrolytic copper with extremely high conductivity. Length is 19.14+0.02mm

(2) K-type thermocouple, equipped with a 0.5mm diameter stainless steel tube as the outer sleeve

(3) The digital Taiwan Taishi thermometer matches the K-type thermocouple imported from the UK. Reading greater than 1000 ° C

(4) The entire testing system is movable, and it is placed in the test box for temperature measurement.

(5) Equipped with electronic stopwatch: precise to 0.1S (for backup during temperature measurement verification)

Test equipment and test fixtures

(1) Main fixtures: test bracket and combustion nozzle

(2) Test bracket: made of stainless steel, with independent horizontal and vertical brackets, namely FT1 and FT2

VW-1 has three specifications. The vertical bracket and the plane where the spray lamp is located are parallel to the observation window plane, making it easy to observe and operate.

(3) Combustion spray lamp (UL1581 specified spray): meets the requirements of ASTM D5025-9 standard power: 500W vertical, 225W horizontal KT

(4) Spitfire diameter: 0.90+0.03mm

(5) Spray lamp length: 1.60+0.05mm,

(6) The spray distance from the air inlet height is 102mm:

(7) Spray angle: 90 degrees horizontally and 20 degrees vertically (the longitudinal axis is maintained in the vertical plane and forms a 20 degree angle with the vertical direction). (8) Frame: Add wedges, and the spray lamp is required to be installed on the wedges and easy to move, while accurately moving back to the specified position. (9) Equipped with a set of rulers that can measure the internal and external flames during horizontal and vertical combustion

(10) Equip a steel ruler with an accuracy of 500mm to 1mm for testing purposes