ELECTRICITY METERING EQUIPMENT (AC) - ACCEPTANCE INSPECTION - PART 21: PARTICULAR REQUIREMENTS FOR ELECTROMECHANICAL METERS FOR ACTIVE ENERGY (CLASSES 0,5, 1 AND 2)
International Electrotechnical Committee
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
4 Test conditions
4.1 Place of inspection
4.2 Reference conditions
4.3 Uncertainty of measurement of percentage error
4.4 Cover and seal
5 Inspection procedure
5.1 Tests to be performed and inspection methods
5.2 Preliminary tests and pre-conditioning
5.3 Test No. 1: AC voltage test
5.4 Test No. 2: Test of no-load condition
5.5 Test No. 3: Starting
5.6 Tests No. 4 to 9: Accuracy tests
5.7 Test No. 10: Verification of the register
5.8 Other tests
6 Criteria for lot acceptance non-acceptance, disposal of
unacceptable lots
7 Test record and evaluation
Bibliography
Specifies particular requirements for acceptance inspection of newly manufactured direct connected or transformer operated electromechanical meters for active energy (classes 0,5, 1 and 2) delivered in lots in quantities above 50.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 13 |
