IEC 62058-21:2008

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

IEC 62058-21:2008 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. The method of acceptance of smaller lots should be agreed upon by the manufacturer and the customer.


This publication is of high relevance for Smart Grid.