I.S. EN 60437:1999

FOREWORD
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
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications

Gives 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.