SN EN 61557-3 : 1997
Current
The latest, up-to-date edition.
ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 KV A.C. AND 1,5 KV D.C. - EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES - PART 3: LOOP IMPEDANCE
12-01-2013
1 Scope
2 Normative references
3 Definitions
4 Requirements
5 Marking and operating instructions
6 Tests
Table 1 - Calculation of operating error
Annex ZA (normative) Normative references to international
publications with their corresponding European publications
Defines the requirements applying to equipment for measurement of the loop impedance between a phase and protective conductor, or between a phase conductor and neutral or between two phase conductors by means of the voltage drop when the circuit being tested is loaded.
| DocumentType |
Standard
|
| PublisherName |
Swiss Standards
|
| Status |
Current
|
| Standards | Relationship |
| UNE-EN 61557-3:2007 | Identical |
| IEC 61557-3:2007 | Identical |
| I.S. EN 61557-3:2007 | Identical |
| DIN EN 61557-3 : 2008 | Identical |
| BS EN 61557-3:2007 | Identical |
| NF EN 61557-3 : 2007 | Identical |
| NBN EN 61557-3 : 2007 | Identical |
| EN 61557-3:2007 | Identical |
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