Glow wire tester

Glow wire test machine Instruction

The best method for testing electro technical products with regard to fire hazard is to duplicate exactly the conditions occurring in practice. In most instances, this is not possible. Accordingly, for practical reasons, the testing of l products with regard to fire hazard is best conducted by simulating as closely as possible the actual effects occurring in practice.

Parts of insulating material or other material which are liable to propagate flames inside the equipment may be ignited by glowing wires or glowing elements.

Under certain conditions (for example, a fault current flowing through a wire, overloading of components, and bad connections), certain elements may attain a temperature such that they will ignite parts in their vicinity.

Brief Introduction

The glow wire tester operation instructions according to the GB5169 and GB4706 the design and manufacturing requirements with the standards so called glow wire test method, which apply to the fire danger test on electrical and electronic products, household electrical appliances and materials, simulation heat element or overload resistance of heat or ignition source caused by thermal stress in a short time.

Standards

1. IEC 60695-2-10 Fire hazard testing -- Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure

2. VDE 0471 Fire hazard testing; part 2: test methods; glow-wire test and guidance

Technical parameter

1.Heating temperature: 500-1000  or less continuous tunable range, temperature measurement  accuracy of plus or minus 10

2.More than burning time: 0.1 999.9 s, plus or minus 0.1 s (adjustable time range)

3.Burning time: 0.1 999.9 s, automatic recording, pause manually

4.Residual flame time: 0.1 999.9 s, automatic recording, pause manually

5.Hot wire for sample pressure. Pressure limiting depth of 7 mm

6.Glow wire: nickel chromium (80%), chromium (20%), the size is made according to the rules.

7. Thermocouple:  nickel chromium/nickel aluminum wire, k index

8. Auto off: sample after reaching prescribed burning time, automatically be off from the hot wire

9.Overall dimensions: width,deep,high (1120. 520.520) mm

Features

Transparent safety door

The heat-resistant glass observation window allows the test to be observed at any time during the test while keeping the test free from external environmental disturbances.

Automatic heating, illumination, exhaust device

Glowing-wire automatic heating timing, equipped with automatic control of the glowing-wire contact position, precise control, convenient and reliable, and the test device is equipped with lighting and exhaust.

Intelligent touch screen control panel

The microcomputer control system is more efficient and reliable, and the programmable 7-inch color LCD touch screen realizes various functions such as control, detection, calculation and data display.

Stepping motor control - accurate moving speed

The moving speed of the sample is controlled by high-end stepping, which has high precision and long service life. In addition, the test device is equipped with flame ruler, and the flame height can be observed at any time during the test.

Sample rack dis-assembly type design

The sample holder of the test device can be removed for loading and cleaning,and it use physical pressure, which has precise pressure,convenient operation and high efficiency.

FAQ

1. What is the purpose of a Glow Wire Tester?

The Glow Wire Tester is used to assess the fire hazard of electrical and electronic equipment, solid insulating materials, and other solid combustible materials by simulating thermal stress caused by overheated components.

2. What properties of materials can be evaluated by this test?

The tester evaluates ignition behavior, flammability, Glow Wire Ignition Temperature (GWIT), and Glow Wire Flammability Index (GWFI), which are critical indicators of fire safety performance.

3. Which industries commonly use the Glow Wire Tester?

It is widely used in the electrical and electronics industry, insulation material manufacturing, engineering plastics, automotive components, household appliances, construction materials, textiles, and packaging materials.

4. What temperature range does the tester support?

The glow wire temperature is continuously adjustable from 500°C to 1050°C, with a control accuracy of ±2°C, meeting the requirements of international standards.

5. How is test pressure and penetration depth ensured?

The tester applies a standard force of 0.95 ± 0.1 N and a controlled penetration depth of 7 mm ± 0.05 mm, using a precision limit adjustment system to ensure repeatability and compliance with standards.