Burning wire tester, material combustion performance testing equipment

10.11,20230

Brief Introduction

Overview of the hot wire tester:
The hot wire tester is a program simulation test project using flameless ignition sources as specified in standards such as IEC60695-2-10 and UL 746A. The hot wire tester heats a specified material (Ni80/Cr20) and shape of electric wire (Φ 4 mm nickel chromium wire) with high current to the test temperature (550 ℃~960 ℃) for 1 minute, and then burns the test sample vertically at the specified pressure (0.95N) for 30 seconds. The ignition hazard of the finished electrical and electronic equipment is determined based on whether the test sample and the substrate ignite or hold on for a certain period of time; Determine the ignition properties, ignition temperature (GWIT), flammability, and flammability index (GWFI) of solid insulation materials and other solid combustible materials.

Performance characteristics of the hot wire tester:
1. Adopting microcomputer control is more precise.
2. Intelligent 7mm limit adjustment.
3. The fixture is suitable for various shapes and sizes of specimens.
4. Thermocouples can withstand temperatures up to 1300 ℃.
5. The X and Z directions can move freely, making it convenient for customers to locate the sample.
6. Adopting one click operation, the entire testing process is completed with one button during the experiment, without the need to switch between complex buttons.
7. The sample car adopts a fully enclosed structure and will not overturn.
8. Equipped with a flame height gauge for easy observation of flame height.
9. Full color touch screen.
10. Overtemperature protection.
11. Overcurrent protection.
Technical parameters of the hot wire tester:

Heating wire temperature	500~1000 ℃± 2 ℃ continuously adjustable
Burning time	0-99.9s ± 0.1s adjustable (usually selected as 30s)
Ignition time	0-999.9s ± 0.1s, recorded by wire control
Extinguishing time	0-999.9s ± 0.1s, recorded by wire control
thermocouple	Φ 1mm armored (K-type) thermocouple
glow wire	4 mm nickel chromium wire (Ni80/Cr20)
Heat depth	7mm ± 0.5mm, dedicated 7mm depth control module, capable of meeting the needs of both flat and curved specimens
Sample pressure	0.95N±0.1N
Test speed	18±3mm/s
U-head standard	IEC60695-2-10
Test procedure	Automatic control of the test program, motor release method, all pressure applied to the sample is from weight pressure, independent ventilation
reference standard	IEC60695-2-10，UL746A
protect	Various protective measures such as overcurrent protection and over temperature protection are taken to ensure the safety of equipment and critical components, and to improve their lifespan
Operational efficiency	The experimental control process achieves one click operation, making the experiment fast and efficient
Standardization of experimental standards	Write a test program based on the actual experimental process

Working conditions of the hot wire tester:
1. Power supply: AC220V, 1KVA;
2. Environmental temperature: 10 ℃~40 ℃;
3. Relative humidity: ≤ 80%;
4. The working environment should be clean, free of corrosive media, without obvious electromagnetic interference, and have reliable grounding wires;
5. The laboratory should have a smoke exhaust system or a space capable of directing smoke outdoors;
6. Equipped with an experimental table, with a depth of>700mm.

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