PD CLC TR 50579-2012 PDF

Full title and description

PD CLC/TR 50579:2012 — Electricity metering equipment (a.c.). Severity levels, immunity requirements and test methods for conducted disturbances in the frequency range 2 kHz – 150 kHz. This European Technical Report specifies severity levels, immunity requirements and test methods for conducted disturbances affecting static watt‑hour (active energy) meters for residential, commercial and light‑industrial use (class indexes A, B and C), as an extension to EN 50470‑1 and EN 50470‑3.

Abstract

This technical report defines conducted‑disturbance immunity requirements and test procedures for a.c. electricity meters in the 2 kHz–150 kHz frequency range. It distinguishes between direct‑connected and transformer‑connected meters and specifies test severity levels intended to ensure meter performance in the presence of conducted high‑frequency currents/interference commonly found on distribution networks. It is intended as a supplement to the EN 50470 series for active energy metering.

General information

• Status: Active / current (published as PD CLC/TR 50579:2012).
• Publication date: 2012 (document issued in 2012; national adoptions reported in late 2012).
• Publisher: CLC (CENELEC) technical report published as PD CLC/TR (also available through national bodies such as BSI and national standards shops).
• ICS / categories: 91.140.50 — Electricity supply systems / electricity metering equipment.
• Edition / version: 2012 (first published as CLC/TR 50579:2012 / PD CLC/TR 50579:2012).
• Number of pages: Approximately 14 pages (typical published PDF length reported by national catalogues).

Scope

The report applies to newly manufactured static watt‑hour meters intended for measurement of alternating‑current active energy in 50 Hz networks for residential, commercial and light industrial use (class indexes A, B and C). It specifies particular immunity requirements and conducted‑disturbance test methods for direct‑connected and transformer‑connected meters as an extension to EN 50470‑1 and EN 50470‑3. The document does not apply to meters with terminal‑to‑terminal voltages exceeding 600 V, portable meters or reference meters.

Key topics and requirements

• Severity levels and defined test levels for conducted disturbances in the frequency range 2 kHz – 150 kHz.
• Immunity test procedures for conducted interference on meter current and voltage circuits.
• Specified immunity amplitudes: for direct‑connected meters up to 2 A (2 kHz–30 kHz) and up to 1 A (30 kHz–150 kHz); for transformer‑connected meters expressed as a percentage of Imax (2 % Imax for 2 kHz–30 kHz and 1 % Imax for 30 kHz–150 kHz).
• Differentiation between meter class indexes A, B and C and between direct and CT/VT operated meters for test application.
• Defines applicability to single‑purpose active‑energy metering parts of multi‑energy or multi‑function meters (i.e., applies only to the active energy metering element if other functions are present in the same enclosure).

Typical use and users

Primary users are electricity meter manufacturers, test laboratories, conformity assessment bodies, distribution utilities and regulators concerned with meter immunity and electromagnetic compatibility. The report is used when designing/testing meters to ensure reliable billing performance in networks with conducted high‑frequency disturbances and when demonstrating conformity alongside EN 50470 series requirements.

Related standards

EN 50470‑1 (General requirements for active energy meters), EN 50470‑3 (Particular requirements for static meters) — this technical report is an extension to those standards for conducted disturbance immunity in the 2 kHz–150 kHz band. Other related EMC and meter‑specific standards (national adoptions and guides) may be relevant when performing compliance testing.

Keywords

electricity metering, watt‑hour meter, immunity, conducted disturbances, EMC, 2 kHz–150 kHz, severity levels, EN 50470, direct‑connected meters, transformer‑connected meters, meter testing

FAQ

Q: What is this standard?

A: PD CLC/TR 50579:2012 is a European Technical Report that specifies severity levels, immunity requirements and test methods for conducted disturbances (2 kHz–150 kHz) affecting a.c. active‑energy (watt‑hour) meters; it supplements the EN 50470 series.

Q: What does it cover?

A: It covers static watt‑hour meters for residential, commercial and light‑industrial use (classes A, B and C), defining test levels and procedures for conducted interference injected on current/voltage circuits and specifying differing severity/application for direct‑connected and transformer‑connected meters. It excludes meters with terminal voltages above 600 V, portable meters and reference meters.

Q: Who typically uses it?

A: Meter manufacturers, EMC and metrology test laboratories, utilities, certification bodies and regulators use the report to design, test and demonstrate immunity of billing meters to conducted high‑frequency disturbances.

Q: Is it current or superseded?

A: The document is published as PD CLC/TR 50579:2012 and is listed as active in national catalogues; users should check national/regulatory databases for any later revisions or superseding documents before relying on it for compliance decisions.

Q: Is it part of a series?

A: Yes — it is a Technical Report associated with the EN 50470 series (EN 50470‑1 and EN 50470‑3) and should be used in conjunction with those standards when addressing general and particular requirements for active energy metering.

Q: What are the key keywords?

A: Conducted disturbances, immunity, EMC, electricity metering, watt‑hour meters, 2 kHz–150 kHz, EN 50470, severity levels, direct connected, transformer connected.