AS/NZS 4695.2.10:1996
Superseded
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Fire hazard testing of electrotechnical products Test methods - Glow-wire test methods - General
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English
05-04-1996
30-06-2017
Specifies a glow-wire test to simulate the effect of thermal stresses which may be produced by heat sources such as glowing elements or overloaded resistors, for short periods, in order to assess the fire hazard by a simulation technique. The test described in This Standard is applicable, in the first place, to electrotechnical equipment, its subassemblies and components, but may also be applied to solid electrical insulating materials or other solid combustible materials. This Standard is technically equivalent to and reproduced from IEC 695-2-1/0:1994.
| Committee |
EL-002
|
| DocumentType |
Standard
|
| ISBN |
0 7337 0361 5
|
| Pages |
9
|
| PublisherName |
Standards Australia
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This method of test indicates the relative resistance of solid electrical insulating materials to tracking for voltages up to 600 V when the surface is exposed under electric stress to water with the addition of contaminants.Tracking may occur during this test when voltage is applied between a defined electrode arrangement on the surface of a material and drops of electrolyte are applied between them at defined intervals of time. The number of drops needed to cause failure increases with the reduction of the applied voltage and, below a critical value, tracking ceases to occur.Materials which do not track at the highest test voltage may erode differently. The depth of erosion can be measured. Some materials may ignite during the test.Notes 1. - The grading of materials reached by this method may possibly differ from that obtained by other testing methods for assessing tracking resistance, for example tests based on the use of high voltage, low-current discharges. This test method provides good resolution between materials with relatively poor tracking resistance. It lacks resolution for materials normally required for outdoor use for which the test method in IEC Publication 587: Test Method for Evaluating Resistance to Tracking and Erosion of Electrical Insulating Materials Used under Severe Ambient Conditions, should be used.2 . - The test results as such cannot be used directly for the evaluation of safe creepage distances when designing electrical apparatus.
| Standards | Relationship |
| IEC 60695-2-1/0:1994 | Identical |
First published in Australia as part of AS 2420-1980.
Second edition 1983.
Third edition 1987.
First published in New Zealand as part of AS 2420-1987.
Jointly revised and redesignated in part as AS/NZS 4695.2.10:1996.
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