GB/T 17215.305-2025Electricity metering equipment (AC) — Particular requirements — Part 5: Multi-branch electricity meters (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

This document is Part 5 of GB/T 17215.3.GB/T 17215.3 has the following parts published.

— Electrical measuring equipment (AC) Special requirements Part 1: Multifunctional energy meters;

— Electrical measuring equipment (AC) Special requirements Part 2: Static harmonic active energy meters;

— Special Requirements for AC Measuring Equipment Part 3: Digital Energy Meters;

— Special requirements for AC measuring equipment, Part 4: Static energy meters connected via electronic transformers;

— Electrical measuring equipment (AC) Special requirements Part 5: Multi-loop energy meters;

— Special requirements for AC measuring equipment, Part 11.Electromechanical active energy meters (Classes 0.5, 1, and 2);

— Electrical measuring equipment (AC) Special requirements Part 21.Static active energy meters (Class A, B, C, D and...) Class E);

— Electrical measuring equipment (AC) Special requirements Part 23.Static var energy meters (Class 2 and 3);

— Special Requirements for AC Measuring Equipment Part 24.Static Fundamental Component Reactive Energy Meters (0.5S Class, 1S Class, Class 1,... Level 2 and Level 3);

— Special requirements for AC measuring equipment, Part 52.Symbols.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document is under the jurisdiction of the National Technical Committee on Standardization of Electrical Instruments and Meters (SAC/TC104).

This document was drafted by: Harbin Electrical Instrument Research Institute Co., Ltd., Shandong Institute of Metrology, and Zhejiang Chint Instrument Co., Ltd.

Limited Liability Company, Jiangsu Provincial Institute of Metrology (Jiangsu Provincial Energy Metrology Data Center), Chengdu Great Wall Development Technology Co., Ltd.

Jiangsu Ankerui Electric Manufacturing Co., Ltd., Yantai Dongfang Weiston Electric Co., Ltd., Shenzhen Kelun Electronics Technology Co., Ltd.

Wuxi Hengtong Electric Co., Ltd., Shenzhen Youxunda Technology Co., Ltd., Zhejiang Hengye Electronics Co., Ltd., State Grid Shandong Electric Power Power Company Marketing Service Center (Metrology Center), Huali Technology Co., Ltd., Guangzhou Institute of Metrology and Testing Technology, State Grid Jiangsu Electric Power Limited Liability Company, Guizhou Power Grid Co., Ltd. Metering Center, State Grid Jiangsu Electric Power Co., Ltd. Marketing Service Center, Shandong Deyuan Electric Power Technology Co., Ltd.

Technology Co., Ltd., Marketing Service Center of State Grid Fujian Electric Power Co., Ltd., Jiangsu Suyuan Jereh Technology Co., Ltd., Guangxi Power Grid Co., Ltd.

Liability Company, State Grid Inner Mongolia Eastern Electric Power Co., Ltd., Inner Mongolia Electric Power Research Institute Branch of Inner Mongolia Electric Power (Group) Co., Ltd.

Company, Delixi Group Instruments Co., Ltd., State Grid Henan Electric Power Company Marketing Service Center, State Grid Chongqing Electric Power Company Marketing Service Chen Guohua, Lu Wenlong, Sun Zhiyuan, Zhou Jianchuan, Wang Hongtao, Wang Xianqiang, Wang Wei, Gong Jun, Xiang Chao, Zeng Jun, Xue Te, Jiang Xiaoguang, Fan Shuliang, Meng Gen Li Ke, Pan Wentao, Bai Hao.

Introduction

GB/T 17215 "Electrical Measuring Equipment (AC)" is divided into several parts, with GB/T 17215.3 "Special Requirements for Electrical Measuring Equipment (AC)" being one of them.

The special requirements for various AC measuring equipment are standardized and will consist of the following 10 parts.

— Part 1: Multifunctional Energy Meters. The purpose is to standardize the technology and testing of multifunctional energy meters and to establish the requirements for their operation.

The relevant rules to be followed.

— Part 2: Static Harmonic Active Energy Meters. The purpose is to standardize the technology, accuracy, and testing of static harmonic active energy meters.

The relevant rules that need to be followed for static harmonic active energy meters should be verified.

— Part 3: Digital Energy Meters. The purpose is to standardize the technology, accuracy, and testing of digital energy meters, and to establish the digital energy meter standard.

The table needs to follow relevant rules.

— Part 4: Static Energy Meters Connected via Electronic Instrument Transformers. The purpose is to standardize static energy meters connected via electronic instrument transformers.

Energy meter technology, accuracy, and testing; establishing the relevant rules that static energy meters connected via electronic transformers must follow.

— Part 5: Multi-Circuit Energy Meters. The purpose is to standardize the classification and configuration, nominal capacity, structure, and instrumentation of multi-circuit energy meters.

Requirements and verification for labeling and documentation, metrological performance, functionality, climate environment, external influences, metrological performance protection, electrical, etc. method.

— Part 11.Electromechanical Active Energy Meters (Classes 0.5, 1, and 2). The purpose is to standardize accuracy classes 0.5, 1, and 2.

The technology and testing of electromechanical active energy meters, establishing accuracy classes of 0.5, 1, and 2 for electromechanical active energy meters, require...

The relevant rules to be followed.

— Part 21.Static Active Energy Meters (Class A, B, C, D, and E). The purpose is to standardize accuracy classes.

The technology and testing of static active energy meters of grades A, B, C, D, and E were used to establish accuracy classes A, B, and E.

The relevant rules that must be followed for Class C, Class D and Class E static active energy meters.

— Part 23.Static Energy Meters (Class 2 and Class 3). The purpose is to standardize static energy meters with accuracy classes 2 and 3.

Reactive energy meter technology and testing, establishing the relevant procedures to be followed for static reactive energy meters with accuracy classes 2 and 3. rule.

— Part 24.Static Fundamental Component Reactive Energy Meters (Class 0.5S, Class 1S, Class 1, Class 2, and Class 3). The purpose is to standardize...

The technology and testing of fundamental frequency static var energy meters with accuracy levels of 0.5S, 1S, 1, 2, and 3 were established to determine accuracy.

The relevant rules that fundamental wave static reactive energy meters of grades 0.5S, 1S, 1, 2 and 3 must follow.

— Part 52.Symbols. The purpose is to provide a standard for the symbols used in standard documents.

This document is used in conjunction with GB/T 17215.321-2021, GB/T 17215.323-2022 and GB/T 17215.324-2022.

This document outlines the minimum test levels required to ensure the instrument functions correctly under normal operating conditions; for special applications, other tests, etc., may be required.

A rating may be necessary, and this should be negotiated between the user and the manufacturer.

Special requirements for electrical measuring equipment (AC) Part 5: Multi-Circuit Energy Meters

1 Scope

This document specifies the classification and configuration, nominal power capacity, structure, markings, and documentation of multi-circuit energy meters (hereinafter referred to as "meters").

Requirements and verification methods for components, metrological performance, functions, climate environment, external influences, metrological performance protection, electrical, etc.

This document applies to the measurement and control of AC power in power grids with a voltage not exceeding 600V and a frequency of 50Hz or 60Hz.

The instrument has an accuracy class of A, B, and C for active power and an accuracy class of 0.5S, 1S, 1, 2, and 3 for reactive power (if any).

The table applies to its type testing.

This document applies to newly manufactured instruments with multiple power measurement loops.

Note 1.The configuration of the nominal voltage and active and reactive power accuracy classes for each circuit is shown in 4.2.

Note 2.Other general requirements for instruments, such as safety and reliability, are specified in GB/T 17215.231-2021 and GB/T 17215.9 (all parts).

Note 3.If the instrument has functions other than measuring active and reactive energy, for example.

— Measurement of voltage amplitude, current amplitude, power, frequency, power factor, etc.

— Measurement of power quality parameters,

— Load control function,

— Data communication interface, The relevant standards apply to these functional requirements, but the provisions for these functions are not within the scope of this document.

Note 4.The regulations for power quality monitoring instruments are covered in GB/T 39853.1-2021, and the measurement methods for power quality monitoring functions are covered in GB / The requirements for power quality monitoring functions are covered in T17626.30-2023.Test requirements for power quality monitoring functions are covered in GB/T 39853.2-2021.

Note 5.If the instrument is designed to be installed in a specified matching socket or rack, the provisions of this document apply, and the instrument shall be installed in the specified mounting position during testing.

The installation shall be carried out on the matching sockets or racks, but the provisions for these sockets or racks are not within the scope of this document.

Note 6.Examples of rack-mounted instruments include. rail-mounted instruments, panel-mounted instruments, etc.

Note 7.If the instrument is designed to have a separate indicator display, the provisions of this document apply, and the instrument is tested with its separate indicator display connected, except... Unless otherwise specified.

This document also applies to auxiliary input and output circuits, operating indicators, and test outputs of electrical energy measurement equipment.

Note 8.For example. pulse input and output, control input and output, power test output.

Note 9.This document distinguishes between.

Single-phase circuits and multi-phase circuits;

— Directly connected circuits and circuits connected via current transformers;

— Instruments with integrated indicators and displays, and instruments with separate indicators;

— Indoor and outdoor instruments.

This document is not applicable to.

— Instruments with a line-to-neutral voltage exceeding 600V derived from the nominal voltage;

— Laboratory and mobile instrument testing equipment;

— Data interface for instrument registers;

— Standard electricity meter;

— Portable instrument;

— Instruments used in special applications such as railway locomotives, rolling stock, aircraft, and ships;

— Instruments connected via electronic instrument transformers (see GB/T 20840.8) and those connected via low-power current transformers (see GB/T 20840.10) The connected instruments.