GB/T 22264.5-2022Mounted digital display electric measuring instruments—Part 5: Special requirements for phase meters and power factor meters (English PDF)

Foreword

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

This document is part 5 of GB/T 22264 "Installed Digital Display Electrical Measuring Instruments". GB/T 22264 has issued the following parts:

--- Part 1: Definitions and general requirements;

--- Part 2: Special requirements for ammeters and voltmeters;

--- Part 3: Special requirements for power meters and reactive power meters;

--- Part 4: Special requirements for frequency tables;

--- Part 5: Particular requirements for phase meters and power factor meters;

--- Part 6: Special requirements for insulation resistance meters;

--- Part 7: Special requirements for multi-function instruments;

--- Part 8: Test methods.

This document replaces GB/T 22264.5-2008 "Mounted Digital Display Electrical Measuring Instruments Part 5: Phase Meter and Power Factor Meter".

Compared with GB/T 22264.5-2008, except for structural adjustment and editorial changes, the main technical changes are as follows:

--- Changed the scope and added "This document is applicable to newly manufactured AC 690V and below, with a nominal frequency of 50Hz or Installed digital display phase meters and power factor meters for measuring various electrical parameters in power distribution systems" (see Chapter 1, 2008 Chapter 1 of the edition);

--- Deleted the definition of "phase meter" and "power factor meter" (see 3.1, 3.2 of the 2008 edition);

--- Increased the standard power value, specifying the nominal voltage, nominal current, nominal frequency and its range (see 5.1);

--- Changed the reference conditions and allowable deviations in Table 1 (see 5.2.1, Table 1 of the 2008 edition).

- Change "voltage component to be measured" to "voltage", reference value or reference range "rated voltage or any voltage within the reference range Voltage (or sometimes)" is changed to "nominal voltage or any voltage within the reference range", and the allowable deviation "±2% of rated value" is changed to is "±1.0%";

- Change "measured current component" to "current", and the reference value or reference range "40%~100% of rated current" to "40%~100% of the nominal current value or any current within the reference range", change the allowable deviation to "±1.0%";

- Change "symmetrical voltage and current" to "symmetrical voltage and balanced current";

- Deleted the special requirements for the influence quantity of "the frequency of the voltage and current components to be measured";

- Increased "nominal voltage (current) value or reference range, allowed to be proposed by the manufacturer" provisions.

--- Changed the nominal use range limits and allowable changes in Table 2 (see 5.3.1, Table 2 of the 2008 edition).

- Change "nominal use range limit" to "nominal use range limit";

- Change "distortion measured by AC" to "waveform", delete the classification of frequency sensitivity and insensitivity, and limit the nominal use range The unified regulation is: "distortion factor: 20% (except for non-RMS measuring instruments)";

- Change the "current component to be measured" to "current", and the limit value of its nominal use range to "10%~of the nominal current value 120% or reference current range lower limit -10% and upper limit 10%";

- Change "measured voltage component" to "voltage", and its nominal use range limit to "±10% of the nominal voltage value, or Reference voltage range lower limit -10% and upper limit 10%";

- Change the "frequency measured by AC" to "frequency", and the limit of its nominal use range to "±2% of the nominal frequency value, or the reference The lower limit of the frequency range -10% and the upper limit 10%", the allowable change is changed to "±(a%Ux b%Um)";

- Change "external magnetic field" to "external power frequency magnetic induction".

--- Changed the technical requirements of "self-heating" (see 5.5.1, 7.2.1 of the 2008 edition);

--- Increased Table 3 "short-time overload" (see 5.5.6.3.2);

--- Deleted the conditions for determining the amount of change (see 6.3 of the 2008 edition);

---Change "output interface" to "input and output interface" (see 5.5.5, 7.2.5 of the 2008 edition);

--- Changed the immunity test requirements for electromagnetic disturbances (see 5.7.1, 7.4.1 of the 2008 edition).

- The limit value imposed by the voltage circuit and current circuit is changed from the original "full scale value" to "nominal value or upper limit value of reference range". Bit (power factor) magnitude requirements;

- The allowable change caused by electromagnetic compatibility in Table 4 is deleted;

- Added "Table 4 Requirements for Applied Electricity in Electromagnetic Disturbance Test".

---Changed the radio interference suppression test requirements, the limit value imposed by the voltage circuit and current circuit, changed from the original "full scale value" to "nominal value Or the upper limit of the reference range", increase the magnitude requirements of the phase (power factor) (see 5.7.2, 7.4.2 of the 2008 edition);

---Modified the technical requirements for "average life" and changed "average life" to "reliability" (see 5.10, 7.7 of the 2008 edition);

--- Added "test items and recommended sequence" (see Appendix A).

Introduction

Installed digital display electrical measuring instruments are installed in various distribution cabinets and distribution boxes, and are widely used in industrial and mining enterprises, electric power, metallurgy, chemical industry, In fields such as energy, medical care, and transportation, the application scenarios continue to expand. GB/T 22264 series standards have been promulgated and used for more than 10 years.

And market changes, the standard can no longer adapt to the development of technology and user needs.

GB/T 22264 aims to standardize the technology of installed digital display electrical measuring instruments by combining the latest product technology and user needs at home and abroad.

Specifications and safety requirements, and put forward corresponding test methods, to provide a product specification for manufacturers and users of such electrical measuring instruments, It embodies most of the requirements of the technical specification for product ordering.

GB/T 22264 is proposed to consist of the following eight parts.

--- Part 1: Definitions and general requirements. The purpose is to establish the definitions and common enquiries.

--- Part 2: Special requirements for ammeters and voltmeters. The purpose is to develop special requirements for ammeters and voltmeters.

--- Part 3: Special requirements for power meters and reactive power meters. The purpose is to formulate special requirements for power meters and reactive power meters.

--- Part 4: Special requirements for frequency tables. The purpose is to develop special requirements for frequency tables.

--- Part 5: Special requirements for phase meters and power factor meters. The purpose is to formulate special requirements for phase meters and power factor meters.

--- Part 6: Special requirements for insulation resistance meters. The purpose is to formulate special requirements for insulation resistance meters.

--- Part 7: Special requirements for multi-function instruments. The purpose is to formulate special requirements for multi-function instruments.

--- Part 8: Test methods. The purpose is to standardize the test methods for installed digital display electrical measuring instruments.

In recent years, the international safety requirements for products have become more and more stringent. This revised standard, combined with IEC 61010-1:2010 and GB/T 17215.211-2021, revised the safety-related content, clarified the terms of use, and improved product safety performance.

1 Scope

This document specifies the product classification, classification and compliance, technical requirements, information, general signs and symbols, inspection rules, and packaging, storage and transportation.

This document is applicable to measuring phase or power of newly manufactured power distribution system with AC below 690V and nominal frequency of 50Hz or 60Hz installed digital display phase meter and power factor meter for factor, also suitable for phase meter and power factor meter with analog/digital dual display digital display part.

This document does not apply to:

--- Phase meter and power factor meter with direct acting analog indication only;

---Portable digital display phase meter and power factor meter;

--- There are also national standard (or industry standard) special-purpose phase meters and power factor meters.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 22264.1-2022 Mounted digital display electrical measuring instruments Part 1: Definitions and general requirements

3 Terms and Definitions

The following terms and definitions defined in GB/T 22264.1-2022 apply to this document.

4 Product classification, classification and conformity