IEC 60437:1997

INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 Measurement frequency
5 Radio noise limits and test voltage
6 Measuring instruments
    6.1 Standard CISPR measuring apparatus
    6.2 Other measuring apparatus
7 Measuring circuit
8 Requirements for the test voltage
9 Atmospheric conditions
10 Test area
11 Arrangement of insulators for test
    11.1 Mounting of insulators
    11.2 Condition of insulators before test
12 Insulators for type test
    12.1 Number of insulators
    12.2 String insulator units
13 Procedure for type tests
    13.1 Checking and calibration of test circuit
    13.2 Voltage application and RI characteristics
    13.3 Acceptance criterion
14 Procedure for sample tests
    14.1 Insulators subject to sample tests
    14.2 Number of samples
    14.3 Mounting arrangement
    14.4 Test procedure
    14.5 Acceptance criterion
15 Test report

Specifies the procedure for a radio interference (RI) test carried out in a laboratory on clean and dry insulators at a frequency of 0,5 MHz or 1 MHz or, alternatively, at other frequencies between 0,5 MHz and 2 MHz.