BS 62058-21:2010 pdf download – Electricity metering equipment (a.c.) — Acceptance inspection Part 21: Particular requirements for electromechanical meters for active energy (classes 0,5, 1 and 2 and class indexes A and B)
1 Scope
This part of IEC 62058 specifies particular requirements for acceptance inspection of newly manufactured direct connected or transformer operated lectromechanical 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.
The process described herein is primarily intended for acceptance inspection between the manufacturer and the purchaser.
This European standard applies to meters of accuracy classes 0,5, 1 and 2, as well as to meters of class }
indexes A and B.
NOTE It can also be used for other purposes, for example to support initial verification.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 62058-1 1 :2008, Electricity metering equipment (a.c.) – Acceptance inspection – Part 11: General acceptance inspection methods
ISO/IEC GUIDE 98: 1 995, Guide to the Expression of Uncertainty in Measurement
EN 50470-1 :2006, Electricity metering equipment (a.c.) – Part 1: General requirements, tests and test conditions – Metering equipment (class indexes A, B and C)
EN 50470-2:2006 , Electricity metering equipment (a.c.) – Part 2: Particular requirements – Electromechanical meters for active energy (class indexes A and B)
3 Terms, definitions, symbols and abbreviations
For the purposes of this document, the terms, definitions, symbols and abbreviations of
IEC 62058-1 1 apply.
4 Test conditions
4.1 Place of inspection
Subclause 5.1 5 of IEC 62058-1 1 applies.