Glow Wire Test Method

The reason why LED lighting is easy to spread the flame inside the equipment insulation material or other solid combustible material parts may be ignited by the glowing wire or hot components. Under certain conditions, such as fault current flowing through wires, component overload, and poor contact, some components will reach a certain temperature and cause nearby parts to ignite. The glow wire testing machine uses simulation technology to evaluate the fire hazard of thermal stress caused by heat sources such as hot components or overload resistance in a short time. It suit for electrical and electronic equipment and its components and parts, as well as solid electrical insulating materials or other solid combustible materials. LISUN design the ZRS-3H Glow-wire Test Apparatus is according to IEC60695-2-1, IEC60695-2-10, IEC60695-2-11, IEC60695-2-12, IEC60695-2-13 (GB/T5169.10, GBT5169.11, GBT5169.12, GB/T5169.13) < basic testing methods of Glow wire, basic testing methods of Glow wire device>, UL 746A, IEC829, DIN695 and VDE0471.

ZRS-3H Glow-wire Test Apparatus

Glow wire test procedure
1. Fix the test product on the test frame and adjust the required size of the test insert. (The instrument is placed in a room with ventilation equipment or in a small laboratory with a special ventilation hood, so that the exhaust gas can be discharged after the experiment.)

Glow wire test procedure

2. Plug in the power supply at the back of the chassis and confirm whether the incoming power supply is well grounded, and the power supply voltage is AC220V.
3. Adjust the chronograph: the time range required for “ta”“ti”“te ”test.
4. Turn on the power switch and check whether the meter is normal.
5. When the temperature meter shows the value to the temperature required for the test, press the start key to enter the test. Note: the two keys of ti.te are self-locking keys. If the“ ti”“te” key pops up, press the start key to enter all timing status.

Glow wire test procedure

6. When the heating time is over, the sample loading trolley will automatically disengage. Stop heating.
7. Observe the test object, press the “ti” button when it starts to ignite, and the chronograph “ti” starts timing.
8. Observe the residues dropped by the test product during the combustion process, press the“ te” button immediately when the test product is burned and extinguished, and the chronograph“ te ”starts timing. Record the flame height when burning.
9. At the end of the test, press the “exhaust button” to exhaust the smoke.
10. Turn off the power switch and press the ti and “te” keys.
11. Remove the test product, record the test result, clean the dirt in the box, close the exhaust vent, and turn off the main power switch.
• The chronograph“ ta” is the test time.
• The chronograph “ti ”is the time from the test to the ignition-off time of the test product.
• The chronograph“ te ”is the time from the test to the extinguishment of the test product.

Notes：
• The user of this device recommends using a regulated power supply, otherwise the temperature will change due to excessive voltage fluctuations. 　
• The glow wire should not work for a long time under high temperature, so as not to shorten the service life of the thermocouple. After each use, the current should be reduced in time, or the power supply should be disconnected.
• After the test is completed, the exhaust fan can be used to exhaust the exhaust gas generated during combustion, but do not turn on the fan during the test, so as not to affect the test results。
• If maintenance is required, especially the replacement of the glow wire, attention should be paid to re-tightening the screws that have been turned, otherwise the current loop will be affected by poor contact and high temperature of the interface will be generated. After replacing parts, users should tighten all screws.
• This machine has an over-temperature protection function. When the set temperature is reached, the heating circuit will be automatically disconnected. Therefore, the preset temperature cannot be lower than the normal working temperature, otherwise it will not work normally.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

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