CEI EN 61557-3:2007-07
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Electrical safety in low-voltage distribution systems up to 1000 V AC and 1500 V DC - Apparatus for testing, measuring or controlling protective systems Part 3: Ring impedance
Published date
01-07-2007
Publisher
Superseded date
12-08-2025
Superseded by
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This Standard specifies the requirements applicable to apparatus for measuring the ring impedance between a phase conductor and the protective conductor or between a phase conductor and the neutral or between two phase conductors; The measurement is made using the voltage drop that is determined when the circuit under test is loaded.
| Committee |
CT 85/66
|
| DocumentType |
Standard
|
| PublisherName |
Comitato Elettrotecnico Italiano
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| IEC 61557-3:2007 | Identical |
| EN 61557-1:2007 | Identical |
| EN 61557-3:2007 | Identical |
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