GB/T 22264.1-2022Mounted digital display electric measuring instruments—Part 1: Definitions and general requirements common to all parts (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 of Standardization Documents" drafted.

This document is Part 1 of GB/T 22264.GB/T 22264 has published the following parts.

--- Part 1: Definitions and general requirements;

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

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

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

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

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

--- Part 7: Particular requirements for multifunctional instruments;

--- Part 8: Recommended test methods.

This document replaces GB/T 22264.1-2008 "Installed digital display electrical measuring instruments - Part 1: Definitions and general requirements", and Compared with GB/T 22264.1-2008, in addition to structural adjustment and editorial changes, the main technical changes are as follows.

--- Changed the scope and added "This document is applicable to newly manufactured DC below 750V and AC below 690V, with a nominal frequency of Installed digital display electrical measuring instruments for measuring various electrical parameters in 50Hz or 60Hz power distribution systems" (see Chapter 1, Chapter 1 of the 2008 edition).

---According to the standard of electrical terminology, the terms and definitions have been revised according to the actual situation (see Chapter 3, Chapter 3 of the 2008 edition).

- Added terms and definitions such as ammeter, voltmeter, power meter, reference value, reference range, nominal voltage, and nominal current;

- Removed external measurement lines, auxiliary lines, maximum allowable values of input current and voltage, input zero current, input impedance, Terms and definitions of input quantity, auxiliary terminal, auxiliary output signal, output information, output status, output impedance, rated value;

- Changed electrical measuring instrument, analog/digital dual display, warm-up time, pre-processing time, overload, measuring range, step sound Terms and definitions such as time should be used.

---Changed the classification method.

- Added "Classification according to the properties of the measured current. can be divided into DC meters and AC meters" (see 4.1.4);

- Added "Classification according to the method of connecting the instrument to be measured. it can be divided into direct-connected instrument and indirect-connected instrument" (see 4.1.6);

- Changed "Classification of Working Conditions" to "Classified by Environmental Conditions", and added Group III to the group. -40°C~70°C (3K7 level), the relative humidity is changed to "not more than 95%" (see 4.1.9).

--- Increased the standard power value (see 5.1).

--- Changed the reference conditions and allowable deviations in Table 4 (see 5.2.1.2, 5.1.2 and Table 2 of the 2008 edition).

- Change "AC measured frequency" to "frequency (except DC meter and frequency meter)", and its reference value or reference range "45Hz~ 65Hz" is changed to "nominal frequency value", the allowable deviation is ±0.3%;

- The influence amount increases the voltage (except ammeter and voltmeter) and the external electric field of nominal frequency;

- Change the allowable deviation of AC power supply waveform "beta=0.05" to "1% of distortion factor".

--- Added the provisions for the error coefficients a and b given by the manufacturer in the basic error formula (see 5.2.2).

--- Deleted the definition of full-scale value and the relevant provisions of the full-scale value of the phase table and power factor table (see 5.3 of the 2008 edition).

--- Changed the nominal use range limits and allowable changes in Table 5 (see 5.3.1, 6.1 of the 2008 edition).

- Changed "relative humidity" to "relative humidity (non-condensing)", and its nominal use range limit "93%" was changed to "95%";

- The amount of influence increases the voltage (except ammeter and voltmeter);

- Change "AC frequency to be measured" to "frequency (except for DC meter and frequency meter)", and the limit of its nominal use range "see each Relevant part" is changed to "±2% of nominal frequency value";

- Change the limit of the nominal use range of the AC power waveform from "beta=0.5" to "5% of the distortion factor";

- Change the ripple nominal usage range limit of DC supply voltage from "delta V/V0<=1%" to "4%".

--- Refined the relevant safety requirements to help improve and verify the safety performance of the power distribution system (see 5.4, 7.1 of the 2008 edition).

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

--- Changed the limits imposed by the temperature rise voltage/current circuit (see 5.5.2, 7.2.2 of the 2008 edition).

--- Changed the display provisions of the multi-function instrument display (see 5.5.4.2, 7.2.4.2 of the 2008 edition).

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

--- Added "data input interface" and "protection of input and output interface" related content (see 5.5.5.1, 5.5.5.4).

--- Changed the technical requirements for immunity to electromagnetic disturbance, and the electrical fast transient burst test level 2 was changed to level 4 (see 5.7.1, 7.4.1 of the 2008 version).

--- Added general requirements for structure (see 5.8.1).

--- Changed the vibration test and impact test clauses (see 5.8.5, 6.5.5 and 6.5.6 of the 2008 edition).

--- Changed the terms of high temperature, low temperature, and alternating damp heat (see 5.9.1, 5.9.2, 5.9.3, 7.6.3, 7.6.4, 7.6.5 of the 2008 edition).

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

--- Changed information (see 6.1, 9.1 of the 2008 edition).

- Change "measured unit" to "measured name or unit";

- Change "reference model given by the manufacturer (if any)" to "product model";

- Change "rated value" to "nominal value";

- Removed "Display digits are 5" Temperature reference value or reference range of the instrument above the "Input impedance value of each range" and other information;

- Increased measurement range.

--- Changed the table of signs and symbols for instruments (see Table 14, Table 6 of the 2008 edition).

- Added C-1~C-11 safety symbols;

- Deleted the general symbols of F-31, F-42, and F-43.

--- Changed the terms of packaging, storage and transportation (see Chapter 8, Chapter 8 of the 2008 edition).

--- Added the normative appendix "Relationship between relative humidity and ambient temperature" (see Appendix B).

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 the fields of energy, medical care and transportation, the application scenarios are constantly expanding. The 2008 edition of GB/T 22264 series of standards has been promulgated and used for more than 10 years In recent years, with the changes of technology and market, it has been unable to adapt to the development of technology and user needs.

GB/T 22264 aims to standardize the technology of installed digital display electrical measuring instruments in combination with the latest product technology and user needs at home and abroad Specifications and safety requirements, and propose corresponding test methods, to provide a product specification for manufacturers and users of such electrical measuring instruments, It reflects most of the requirements of product ordering technical specifications.

This revision intends to revise the name of Part 8 of GB/T 22264.GB/T 22264 consists of the following 8 parts.

--- Part 1: Definitions and general requirements;

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

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

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

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

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

--- Part 7: Particular requirements for multifunctional instruments;

--- Part 8: Test methods.

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

1 Scope

This document specifies the terms and definitions of mounted digital display electrical measuring instruments, product classification, classification and compliance, technical requirements, information information, general signs and symbols, packaging, storage and transport, and inspection rules.

This document applies to newly manufactured power distribution systems below 750V DC and below 690V AC with a nominal frequency of 50Hz or 60Hz Installed digital display electrical measuring instrument for measuring various electrical parameters in the system.

Note: The above-mentioned "in the power distribution system below DC 750V" does not apply to the frequency table, phase table and power factor table.

This document applies to the following installed electrical measuring instruments with digital display for measuring electrical parameters.

--- ammeter and voltmeter;

--- Power meter and reactive power meter;

---Frequency table;

--- Phase table and power factor table;

--- Insulation resistance meter;

--- Any two or more combinations of multifunctional instruments in the form above;

--- The digital display part of an electrical measuring instrument with an analog/digital dual display.

This document does not apply to.

--- Electrical measuring instruments with direct-acting analog indication only;

--- Portable digital display electrical measuring instrument;

---There are also special-purpose instruments of national standards (or industry standards).

Note: This document does not specify the size requirements of the instrument, see GB/T 1242-2000 for the size requirements of the instrument.

2 Normative references

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

GB/T 2423.1-2008 Environmental Testing of Electrical and Electronic Products Part 2: Test Methods Test A. Low Temperature

GB/T 2423.2-2008 Environmental testing of electrical and electronic products - Part 2: Test method Test B. High temperature

GB/T 2423.4-2008 Environmental testing of electrical and electronic products - Part 2: Test method Test Db. Alternating damp heat (12h 12h cycle)

GB/T 2423.5-2019 Environmental Testing Part 2: Test Methods Test Ea and Guidelines. Shock

GB/T 2423.10-2019 Environmental Testing Part 2: Test Methods Test Fc. Vibration (Sinusoidal)

GB/T 2829-2002 Periodic Inspection Counting Sampling Procedure and Table (Applicable to Inspection of Process Stability)

GB/T 4208-2017 Protection class of enclosure (IP code)

GB/T 5169.10-2017 Fire Hazard Test for Electrical and Electronic Products Part 10: Glow Wire/Basic Test Method for Glow Wire Hot Wire Apparatus and General Test Methods

GB/T 13384 General technical conditions for packaging of mechanical and electrical products