Description

Application

Glow Wire Tester to determine the fire hazard of electrical parts and components. For example, overload, short circuits, poor connections, or others that could ignite and spread the flame to the other part. This instrument is suitable for testing plastic and non-metallic insulating material parts for electrical and electronic products, components, and household electrical appliance parts, e.g. switch housings, relay sockets, etc.

TESTEX Glow Wire Tester, using the indirect method. (Known as the IEC method, compared to the direct method defined in UL94 method). This device applies heat to the specimen over a period of time, simulating an overloaded resistor or other ignition sources, to reproduce as closely as possible what actually occurs.

In addition, we have other flammability test equipments that cater to different test ranges and requirements, they comply with complies with ASTM D1230, FTMS191-5908, BS EN71-2:2006, ISO 15025, FMVSS 302, ASTM D6413, UL HB, etc.

Test principle

The glow wire test apparatus simulates the possibility of ignition of insulating materials inside the equipment that is susceptible to flame spread due to the hot wire. Under certain conditions, such as fault currents flowing through the conductor, overloading of components, and poor contact, certain components can reach a certain temperature and cause the nearby parts to ignite.

Specifications

• Glow Wire Ø 4mm ± 0.04mm Ni/Cr (80/20), standard
• Temperature Range: indoor temperature ~ 960°C, adjustable
• Sample pressure: 1N ± 0.2 N
• Test speed: 18 ± 3 mm/s
• Test mode automatic control, independent convulsions
• Chamber ≥0.5m³
• Control single chip microcomputer + touch screen control

Features

• Equipped with an automatic control system. After start-up, the trolley loaded with specimens will automatically run to the scorching wire and then will return automatically after reaching the set scorching time, making it easy to operate.
• The unit has an illuminated unit with a digital display of time and temperature, a large viewing window, and black walls, so it is easy to observe and record.
• The temperature controller with the thermocouple provided allows for accurate measurement of the glow tablet temperature.
• The fully automatic instrument has a control unit circuit fully protected by fuses and a miniature circuit breaker, and also with a large box on the outside for maximum operator safety.

Weight

123 kg

Power

220/110 V

50/60 Hz

Dimensions

Length: 1130 mm

Width: 570 mm

Height: 1200 mm

Standards

IEC 60695-2-10

ASTM D6194

GB/T 5169.10~13

The Distinction among GWIT, GWFI, GWT

GWT consists of three tests from IEC 60335 (GWIT, GWFI, and GWT), which are slightly similar but not the same, and can distinguish as follows.

1. GWFI: Glow-wire flammability index

The GWFI is a test of the ignition temperature. If the flame of the sample is extinguished within 30 seconds after the removal of the glow wire, the sample is not ignited by the packaging paper under the sample, and the sample does not ignite, then this temperature can record as a pass.

2. GWT: Glow Wire Test

The GWT and GWFI tests are similar because they both use the above conditions to determine if the test is passed after a specific temperature has been selected.

3. GWIT: Glow-wire Ignitiontemperature

GWIT is the minimum temperature at which the material ignites and burns for more than 5s when the heating element comes into contact with the sample. (Ignition is judged to be flaming for ≥ 5 seconds).

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