Hot-Wire

Hot Wire Ignition Tester (IS/IEC 60947-1:2004 Annexure M.)

Lab Test

SCR ELEKTRONIKS manufacture HOT WIRE IGNITION TESTER to conduct the flammability test of the material as discussed in IS/IEC 60947-1:2004 Annexure M.

The HWI test indicates a materials resistance to ignition when exposed to abnormally high temperatures resulting from a component failure such as a conductor carrying far more than its rated current. HWI performance is expressed as the mean number of seconds required to ignite a specimen when wrapped with an energized non-chrome resistive wire that dissipates a specified level of energy.

  • Why flammability test?
  • A material's ability to resist ignition from electrical sources is an important factor that must be considered in the selection and evaluation of a material for use in electrical equipment. Possible electrical ignition sources in equipment are: overloaded (overheated) electrical conductors and components; arcing parts, such as the open contacts of switches and relays; and arcing at broken or loose connections, e.g., splices or terminals. Polymeric materials in direct contact with or in close proximity to overloaded or arcing electrical parts could ignite. The three basic tests used to evaluate a material's ability to resist ignition are the hot-wire ignition (HWI), high-current (or high-amp) arc ignition (HAI), and high-voltage arc tracking rate (HVTR). Details of the test criteria can be found in UL 746A, the Standard for Safety of Polymeric Materials -- Short-Term Evaluations. The recognized component directory tabulates the results of the small-scale tests conducted on the materials.

  • Advantages
  • This test ensures that your product meet high standards of quality &safety. This product is meant for all switchgears/insulator/polymer/electro plastic manufacturers and manufacturers who use insulators in their products e.g. wiring accessories, appliances, etc.

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