CONSIDERATION OF REFERENCE IMPEDANCES AND PUBLIC SUPPLY NETWORK IMPEDANCES FOR USE IN DETERMINING DISTURBANCE CHARACTERISTICS OF ELECTRICAL EQUIPMENT HAVING A RATED CURRENT <= 75 A PER PHASE
International Electrotechnical Committee
FOREWORD
1 Scope
2 Normative references
3 Systems of low-voltage supply
4 Supply impedances
5 Reference impedances
6 Impedance at frequencies above the
supply frequency
Annex A (informative) - Methods for determining
the maximum modulus values of public
electricity supply low-voltage network
impedances relevant to three-phase
services of more than 100 A per phase
at 50 Hz
Annex B (informative) - Methods for determining
the maximum modulus values of public
electricity supply low-voltage network
impedances relevant to three-phase
services of more than 100 A per phase
at 60 Hz
Annex C (informative) - Measurement of supply
impedance and survey method
Bibliography
Defines the information that was available and the factors that were taken into account in arriving at the reference impedances that were incorporated in IEC 60555 and which are now incorporated in some parts of IEC 61000-3.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 77 |
| Supersedes |
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