1 Subject Content and Application Scope
This standard specifies the test methods for measuring radio interference for high voltage equipment
This standard is applicable to the radio interference test for high voltage equipment such as AC high voltage switchgear, voltage transformer, current transformer, coupling capacitor, arrester, insulator and fittings.
Test methods in this standard are limited to the radio interference transmission part of the sample and not involved in the interference of its radiation part.
2 Terms
Terms adopted in this standard are in accordance with the requirements of GB 4365 - 84 "Terms for Radio Interference" and GB 2900. 19- 82 "Electrotechnical Terms-High Voltage Test Techniques and Insulation Coordination".
The unit of radio interference voltage adopted in this standard is μV, which is expressed by dB with 1 μV equaling to 0 dB.
1 Subject Content and Application Scope
2 Terms
3 Test Conditions
4 Test Principle
5 Test Circuit
6 The Background Noise of the Test Circuit
7 Determination of Attenuation Coefficient of Test Circuit
8 The Attenuation Coefficient of the Resistance Network
9 Measuring Result
10 The Test Voltage and the Pressing Mode
11 Test Observation
12 Test Report
Additional Explanations:
