IEC 62058-31-2008 PDF

Full title and description

Electricity metering equipment (AC) - Acceptance inspection - Part 31: Particular requirements for static meters for active energy (classes 0,2 S, 0,5 S, 1 and 2). This part of IEC 62058 specifies the particular acceptance‑inspection requirements, sampling and tests for newly manufactured direct‑connected or transformer‑operated static meters for active energy delivered in lots (typically >50 units), supplementing the general procedures of IEC 62058‑11.

Abstract

IEC 62058‑31:2008 defines the test program, reference conditions and acceptance criteria for lot acceptance inspection of static electricity meters for active energy (accuracy classes 0,2 S; 0,5 S; 1; 2). It covers pre‑conditioning, visual checks, AC voltage tests, no‑load/start tests, accuracy (percentage error) tests, register verification and reporting requirements to determine lot conformity.

General information

• Status: Published / active international standard (adopted by CENELEC as EN 62058‑31:2010 in the European context).
• Publication date: September 2008 (Edition 1.0).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 17.220.20 (measurement of electrical and magnetic quantities); 91.140.50 (electricity supply systems).
• Edition / version: Edition 1.0 (2008).
• Number of pages: 27 pages (bilingual English/French IEC publication).

Scope

Specifies particular requirements for acceptance inspection of newly manufactured static meters for active (real) energy — direct‑connected or transformer‑operated — of accuracy classes 0,2 S, 0,5 S, 1 and 2, when delivered in lots of quantities above 50. The standard is intended primarily for manufacturer‑to‑purchaser acceptance testing; methods for smaller lots are to be agreed between parties. It complements general acceptance procedures given in IEC 62058‑11.

Key topics and requirements

• Reference test conditions and environmental/test bench setup (voltage, frequency, temperature and measurement uncertainty adjustments).
• Visual inspection and identity checks (type markings, seals, mechanical condition) and pre‑conditioning (thermal stabilization).
• AC voltage withstand/insulation checks and no‑load (open‑circuit) tests.
• Starting‑current (starting) tests and defined accuracy test points (percentage error limits corrected for measurement uncertainty).
• Verification of register/energy display and special‑service meter checks where applicable.
• Sampling plans and lot acceptance/non‑acceptance criteria tied to IEC 62058‑11; test records and reporting requirements.

Typical use and users

Used by electricity meter manufacturers, factory inspection teams, independent testing laboratories, utilities and purchasing/procurement teams, national metrology and conformity assessment bodies, and regulators to verify lot conformity before shipment or initial verification. It is also referenced by organisations preparing national or regional adoptions (e.g., EN adoption).

Related standards

Commonly used alongside: IEC 62058‑11 (general acceptance inspection procedures and sampling), IEC 62052 and IEC 62053 series (general metering and accuracy test methods), and other legal‑metrology or type‑approval standards for electricity meters (and regional adoptions such as EN 62058‑31:2010).

Keywords

Acceptance inspection, static meters, active energy, electricity metering, lot acceptance, sampling plan, accuracy classes, IEC 62058, EN 62058‑31, starting current, no‑load test, register verification.

FAQ

Q: What is this standard?

A: IEC 62058‑31:2008 is Part 31 of the IEC 62058 series and sets particular acceptance‑inspection requirements for static AC electricity meters for active energy in specified accuracy classes.

Q: What does it cover?

A: It covers test conditions, inspection procedures (visual, AC voltage, no‑load, starting and accuracy tests), sampling and lot acceptance criteria, register verification and test reporting for newly manufactured static meters delivered in lots.

Q: Who typically uses it?

A: Meter manufacturers, factory inspectors, independent test laboratories, utilities, procuring organisations, national metrology institutes and conformity assessment bodies.

Q: Is it current or superseded?

A: The publication date is September 2008 (Edition 1.0). It was adopted in Europe as EN 62058‑31:2010; available records show the 2008/2010 editions as the published/adopted versions. Users should check national or regional catalogues for any later amendments or replacements before relying on the text for regulatory compliance.

Q: Is it part of a series?

A: Yes — IEC 62058 is a multi‑part series on acceptance inspection for electricity metering equipment; Part 31 is the meter‑specific supplement for static meters for active energy and links to general procedures in IEC 62058‑11.

Q: What are the key keywords?

A: Acceptance inspection, static electricity meters, active energy, accuracy classes 0,2 S/0,5 S/1/2, sampling plan, lot acceptance, IEC 62058‑31.