GB/T 22264.8-2022Mounted digital display electric measuring instruments - Part 8: Test methods (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 8 of GB/T 22264 "Mounted Digital Display Electrical Measuring Instruments". GB/T 22264 has issued the following part.

--- 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 22264.8-2009 "Mounted digital display electrical measuring instruments - Part 8: Recommended test methods", and Compared with GB/T 22264.8-2009, 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 DC 750V and AC 690V and below, the nominal frequency is Measuring ammeter and voltmeter, wattmeter and reactive power meter, frequency meter, phase meter in 50Hz or 60Hz power distribution system and power factor meter, insulation resistance meter, and any combination of two or more multifunctional instruments, also suitable for analog/digital Digital display portion of a dual display electrical measuring instrument. "(see Chapter 1, see Chapter 1 of the 2009 edition);

--- Increased the standard power value (see 4.1);

---Change "change caused by ambient humidity" to "change caused by relative humidity (no condensation)" and "humidity setting 93%" For "humidity setting 95%" (see 7.2.2, 5.3 of the 2009 edition);

--- Merge "change amount caused by auxiliary power supply voltage (or battery voltage)" and "change amount caused by auxiliary power supply frequency" into "auxiliary In "power supply", add "AC power supply waveform", "DC power supply voltage" and "ripple of DC power supply voltage" (see 7.2.8, 2009 edition 5.8, 5.9);

---Change "80% full scale" in "the change caused by the measured voltage component" to "the lower limit of the measurement range plus 80% of the range", "Voltage to the lower limit of its nominal use range" is changed to "voltage to 90% of the lower limit of the nominal voltage or reference voltage range", "Voltage to the upper limit of its nominal use range" was changed to "voltage to 110% of the upper limit of the nominal voltage or reference voltage range" (see 7.2.9, 5.11 of the 2009 edition);

---Change "80% full scale" in "the change caused by the measured current component" to "the lower limit of the measurement range plus 80% of the range", "Current to the lower limit of its nominal use range" is changed to "Current to 10% of the nominal current value or 90% of the lower limit of the reference current range Value", "current to the upper limit of its nominal use range" changed to "current to 120% of the nominal current value or the upper limit of the reference current range 110% current value" (see 7.2.10, 5.12 of the 2009 edition);

--- Refinement of safety requirements (see 7.3, 7.5, Chapter 9 of 7.3, 2009 edition);

--- Changed the limit value imposed by the temperature rise voltage/current circuit (see 7.4.2, 6.8 of the 2009 edition);

--- Added "data input interface" and "protection of input and output interfaces" (see 7.4.5);

--- Added "response time of insulation resistance meter used in IT system" (see 7.4.7.3);

--- Added "measurement voltage peak value of insulation resistance meter used in IT system" (see 7.4.14);

--- Added "measurement current peak value of insulation resistance meter used in IT system" (see 7.4.15);

--- Added general requirements for structure (see 7.7.1);

--- Changed the shock test clauses, and summarized the vibration test and shock test clauses to the influence of mechanical force (see 7.7.5, 2009 version 7.1, 7.2);

--- Deleted the operating temperature limit (see 6.9 of the 2009 edition);

--- Changed the terms of high temperature, low temperature and alternating damp heat (see 7.8.1, 7.8.2, 7.8.3, 8.1, 8.2, 8.3 of the 2009 edition);

--- Changed the "average life" and changed "average life" to "reliability" (see Chapter 11 of 7.9, 2009 edition);

--- Added special functional requirements (see 7.10);

--- Added information, general signs and symbols (see 7.11);

--- Added test items and recommended sequence (see Chapter 8);

--- Deleted the schematic diagram of the DC electromagnet (see Appendix A of the 2009 edition).

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 be composed of the following 8 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 changed the safety-related content, clarified the terms of use, and improved product safety performance.

1 Scope

This document specifies the general test conditions, measuring equipment, samples, test procedures, and test data processing of installed digital display electrical measuring instruments. Reasoning and test reports.

This document applies to newly manufactured power distribution systems below 750V DC and 690V AC with a nominal frequency of 50Hz or 60Hz.

Measuring ammeter and voltmeter, wattmeter and reactive power meter, frequency meter, phase meter and power factor meter, insulation resistance meter and any two The multi-function instrument with combination of two or more types is also applicable to the digital display part of the electrical measuring instrument with analog/digital dual display.

Note 1. The above-mentioned "in the power distribution system below DC 750V" does not apply to the frequency meter, phase meter and power factor meter.

This document does not apply to.

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

--- Portable digital display electrical measuring instrument;

--- There are other special-purpose instruments with national standards (or industry standards).

Note 2. This document does not specify the dimensional requirements of the instrument, see GB/T 1242-2000 for the dimensional requirements of the instrument.

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 2423.1-2008 Environmental testing for electrical and electronic products - Part 2: Test methods Test A. Low temperature

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

GB/T 2423.4-2008 Environmental testing for 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 method Test Fc. Vibration (sinusoidal)

GB/T 2423.37-2006 Environmental testing for electrical and electronic products - Part 2: Test methods Test L. Sand and dust test

GB/T 2423.38-2021 Environmental testing - Part 2: Test methods Test R. Water test methods and guidelines

GB/T 4208-2017 Enclosure protection level (IP code)

GB/T 5169.10-2017 Fire Hazard Tests for Electrical and Electronic Products - Part 10: Glow Wire/Hot Wire Basic Test Method Ignition Hot wire apparatus and general test methods

GB/T 17215.9311-2017 Reliability of Electrical Measuring Equipment Part 311: Temperature and Humidity Accelerated Reliability Test

GB/T 17626.2 Electromagnetic Compatibility Test and Measurement Technology Electrostatic Discharge Immunity Test

GB/T 17626.3 Electromagnetic Compatibility Test and Measurement Technology Radio Frequency Electromagnetic Field Radiation Immunity Test

GB/T 17626.4 Electromagnetic Compatibility Test and Measurement Technology Electrical Fast Transient Burst Immunity Test

GB/T 17626.5 Electromagnetic Compatibility Test and Measurement Technology Surge (Shock) Immunity Test

GB/T 17626.6 Electromagnetic compatibility test and measurement technology Conducted disturbance immunity induced by radio frequency field

GB/T 17626.11 Electromagnetic Compatibility Test and Measurement Technology Voltage Dips, Short Interruptions and Immunity Tests to Voltage Changes