Glow wire testing machine experimental test method
Glow-wire testing machine: Parts of insulating materials or other solid combustible materials that are prone to flame spread inside the equipment may ignite due to glowing wires or glowing components. It is suitable for fire hazard tests of electrical and electronic products, household appliances and their materials, simulating the thermal stress caused by heat sources or ignition sources such as hot components or overload resistors in a short time. 1. Purpose: To standardize the operation, maintenance and maintenance of the glow wire testing machine, so that the equipment can run normally. 2. Scope: It is suitable for flame retardant test of plastic parts of various products. 3. Reference standard: according to GB/T 5169.10-2008<Glow Wire, Basic Wire Test Methods Glow Wire Apparatus and General Test Methods>The experimental requirements of the relevant clauses in the standard: Fourth, the main accessories of the instrument: 1. Relay: Omron. 2. Digital instrument: Use Korean autonics (Autonics) to display. 3. Circuit breaker: Schneider 4. Buttons, switches, indicator lights: Shanghai. 5. Box: Made of 1.2 thick 304 stainless steel, the surface is painted. 5. Operation process 1. Preparation before operation of glow wire testing machine a. Be sure to read the instructions carefully before use, and follow the instruction steps, and operate in sequence; b. Do not use accessories not provided by the original factory to avoid danger; c. The glow-wire tester is placed in a room with degreasing ventilation equipment (or in a small laboratory with a special ventilation hood) for the discharge of exhaust gas after the test. d. Hang the two matching weights with copper wires (connected to the sample holder) under the holder plate through the two pulleys on the left end of the holder (passing through the corresponding holes). e. Know the interest and clamp the sample according to the standard requirements. f. Adjustment of the proximity switch 2. Loosen the nut fixing the proximity switch to move it left and right; 3. Press“left row button”The trolley moves forward automatically. When the sample touches the glow wire, move the proximity switch by hand to stop the trolley and fix the proximity switch. 4. Press“heating”button to adjust the current adjustment knob. According to the requirements of the sample, adjust the appropriate current value, and at the same time check whether the temperature reaches the temperature required by the test requirements. When the test sample touches the glow wire head, the limit electromagnet is released, and it can only move forward 7mm under the pulling force of 1N weight. When the experiment is finished, pop out the heating button, and then turn the current adjustment knob to the minimum. More about Glow Wire Testing Machines: http://www.standard-groups.com/FlammabilityTesting/1039.html
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