GB/T 4207-2003 Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions

Standard No.: GB/T 4207-2003
Language: Chinese
Release Date: 2003
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Replace By: GB/T 4207-2012
Lastest: GB/T 4207-2022

Scope: This test method measures the relative resistance to tracking of solid electrical insulating materials at voltages up to 600 V when the surface is exposed to water containing impurities under an electric field. Tracking may occur in this test case when a voltage is applied between a defined electrode arrangement placed on the surface of the material and electrolyte is dripped between the two electrodes at defined time intervals. The number of droplets necessary to cause material destruction increases with decreasing applied voltage, and below a certain limit, tracking does not occur. When the material does not track under the highest test voltage, it can have different degrees of corrosion, and the corrosion depth can be measured. Certain materials are capable of burning during the test.

2022 GB/T 4207-2022 Method for the determination of the proof and the comparative tracking indices of solid insulating materials
2012 GB/T 4207-2012 Method for the determination of the proof and the comparative tracking indices of solid insulating materials
2003 GB/T 4207-2003 Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions

GB/T 4207-2003Method for determining the comparative and the proof tracking indices of solid insulating materials under moist conditions