IEC 60255-25:2000

1 Scope and object
2 Normative references
3 Definitions
4 Emission limits
      4.1 Conducted emission limits
      4.2 Radiated emission limits
5 General measurement requirements for emission tests
      5.1 Ambient noise in measurement test sites
      5.2 Requirements for measurement of conducted
             emissions
      5.3 Requirements for measurement of radiated
             emissions
6 Test procedure for emission tests
      6.1 General configuration of the EUT
      6.2 Measurement of conducted emissions
      6.3 Measurement of radiated emissions
      6.4 Measurement of radiated emissions at
             alternative distances
7 Criteria for acceptance
8 Test report
Annex A (informative) The use of measuring relays and
                      protection equipment in other
                      locations
Annex B (informative) Explanatory notes on the origin of
                      this emission standard
Annex ZA (normative) Normative references to international
                     publications with their corresponding
                     European publications
Figure 1 - Dimensions of test site
Figure 2 - Minimum size of metal ground plane
Table 1 - Conducted emission limits
Table 2 - Radiated emission limits

Specifies the general requirements for the measurement of radio-frequency emissions emanating from measuring relays and protection equipment for power system protection, including the control, monitoring and process interface equipment used with such systems. Is based on CISPR 22.