I.S. EN IEC 60051-4:2021
Current
The latest, up-to-date edition.
Direct acting indicating analogue electrical measuring instruments and their accessories title - Part 4: Special requirements for frequency meters (IEC 60051-4:2018)
Hardcopy , PDF
English
17-05-2021
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Description, classification and compliance
5 Requirements
6 Information, markings and symbols
7 Package
8 Test rules
Annex A (normative) Nonconformity classification of tests
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