GB/T 22264.8-2009 in English

《GB/T 22264.8-2009安装式数字显示电测量仪表 第8部分：推荐的试验方法》由TC104（全国电工仪器仪表标准化技术委员会）归口，TC104SC2（全国电工仪器仪表标准化技术委员会电工和电磁量测量设备分会）执行，主管部门为中国机械工业联合会。
GB/T22264的本部分规定了安装式数字显示电测量仪表的通用试验条件、基本误差、改变量、电气要求、机械要求、气候影响、电气安全要求、电磁兼容、平均寿命的试验方法。
本部分适用于以下具有数字显示的测量电参量的安装式电测量仪表:
---电流表和电压表;
---功率表和无功功率表;
---相位表和功率因数表;
---绝缘电阻表;
---频率表。
以及上述形式的任意组合的多功能仪表,也适用于具有模拟/数字双显示的电测量仪表的数字显示部分。
本部分不适用于:
---只具有直接作用模拟指示的电测量仪表。
---便携式数字显示电测量仪表。
---另有国家标准(或行业标准)的特殊用途仪表。

1 Scope

This part of GB/T 22264 specifies general test conditions, intrinsic error, variation, electrical requirements, mechanical requirements, climate influence, electrical safety requirements, electromagnetic compatibility and mean time between failures test methods.

This part is applicable to the following mounted digital display electric measuring instruments measuring electric parameters:

——ammeters and voltmeters;

——wattmeters and varmeters;

——power factor meters and phase meters;

——insulation resistance meters;

——frequency meters.

and multi-function instruments in random combination of above forms; it is also applicable to digital display part of dual analogue-digital display electric measuring instruments.

This part is not applicable to:

——electric measuring instruments only provided with direct acting indicating analogue.

——portable digital display electric measuring instruments.

——the instruments for special purpose specified in national standard (or professional standard).

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 22264. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

GB/T 2423.1-2008 Environmental Testing for Electric and Electronic and Electronic Products - Part 1: Test Methods - Tests A: Cold (IEC 60068-2-1:2007, IDT)
GB/T 2423.2-2008 Environmental Testing - Part 2: Test Methods - Tests B: Dry Heat (IEC 60068-2-2:2007, IDT)
GB/T 2423.4-2008 Environmental Testing for Electric and Electronic Products - Part 2: Test Method - Test Db: Damp Heat, Cyclic (12h+12h Cycle) (IEC 60068-2-30:2005, IDT)
GB/T 2423.5-1995 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Ea and Guidance: Shock (idt IEC 60068-2-27:1987)
GB/T 2423.10-2008 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Fc and Guidance: Vibration (Sinusoidal) (IEC 60068-2-6:1995, IDT)
GB/T 2423.37-2006 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test L: Dust and Sand (IEC 60068-2-68:1994, IDT)
GB/T 2423.38-2008 Environmental Test for Electric and Electronic Products - Part 2: Test method - Test R: Water Test Method and Guidance (IEC 60068-2-18:2000, IDT)
GB 4208-2008 Degrees of Protection Provided by Enclosure (IP Code) (IEC 60529:2001, IDT)
GB 4793.1-2007 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use - Part 1: General Requirements (IEC 61010-1:2001, IDT)
GB/T 5169.10-2006 Fire Hazard Testing for Electric and Electronic Products - Part 10: Glow/Hot-wire Based Test Methods - Glow-wire Apparatus and Common Test Procedure (IEC 60695-2-10:2000, IDT)
GB 9254-2008 Information Technology Equipment - Radio Disturbance Characteristics - Limits and Methods of Measurement (CISPR 22:2006, IDT)
GB/T 17626.2-2006 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Electrostatic Discharge Immunity Test (IEC 61000-4-2:2001, IDT)
GB/T 17626.3-2006 Electromagnetic Compatibility - Testing and Measurement Techniques - Radiated Radio-frequency Electromagnetic Field Immunity Test (IEC 61000-4-3:2002, IDT)
GB/T 17626.4-2008 Electromagnetic Compatibility - Testing and Measurement Techniques - Electrical Fast Transient/Burst Immunity Test (IEC 61000-4-4:2004, IDT)

Foreword i
1 Scope
2 Normative References
3 General Test Conditions
3.1 Reference Conditions
3.2 Heat Stability
3.3 Preconditioning
3.4 Test Device Error
3.5 Multi-phase Test
3.6 Multi-function Instruments with Multiple Measurement Ranges
3.7 Test Wire
4 Intrinsic Error Test
4.1 Selection of Test Points
4.2 Test Procedures
4.3 Calculation of Error
5 Variation Test
5.1 Selection of Test Points
5.2 Variation Caused by Ambient Temperature
5.3 Variation Caused by Ambient Humidity
5.4 Variation Caused by External Magnetic Field
5.5 Variation Caused by Ripple of Measured DC Quantity
5.6 Variation Caused by Waveform Distortion of Measured AC Quantity and Peak Factor
5.7 Variation Caused by Measured AC Quantity Frequency (Excluding Frequency Meter)
5.8 Variation Caused by Auxiliary Supply Voltage (or Battery Voltage)
5.9 Variation Caused by Auxiliary Supply Frequency
5.10 External Constant Magnetic Induction
5.11 Variation Caused by Voltage Component of Measured Quantity
5.12 Variation Caused by Current Component of Measured Quantity
5.13 Variation Caused by Power Factor (Applicable to Wattmeter and Varmeter)
5.14 Variation Caused by Phase Balance
5.15 Variation Caused by Interaction between Measuring Elements of Multi-phase Instrument (Applicable to Wattmeter and Varmeter)
6 Test for Electrical Requirements
6.1 Self-heating
6.2 Permissible Overload
6.3 Resolution
6.4 Response Time
6.5 Stability Error
6.6 Interference Rejection Test
6.7 Power Consumption
6.8 Temperature Rise
6.9 Limit Value of Operating Temperature
6.10 Repeatability Error
6.11 Display Function Test
6.12 Output Interface
6.13 Open-circuit Voltage of Insulation Resistance Meter
6.14 Nominal Current of Insulation Resistance Meter
6.15 Measured Current of Insulation Resistance Meter
6.16 Output Voltage of Insulation Resistance Meter
6.17 Internal Impedance and Internal DC Resistance of Insulation Resistance Meter Used for IT System
7 Mechanical Requirements
7.1 Vibration Test
7.2 Shock Test
7.3 Heat Resistance and Flame Retardance
7.4 Waterproof Test Procedures
7.5 Dust Prevention Test Procedures
7.6 Enclosure
7.7 Key and Button
7.8 Adjustable Mechanism
8 Climate Influence
8.1 High Temperature Test Procedures
8.2 Low Temperature Test Procedures
8.3 Cyclic Damp Heat Test Procedures
9 Electrical Safety Requirements
10 Electromagnetic Compatibility
10.1 Test Conditions
10.2 Radiofrequency Electromagnetic Field Immunity Test Procedures
10.3 Radio Interference Test Procedures
10.4 Test Procedures for Conducted Disturbance Immunity Induced by Radio-frequency Field
10.5 Electrostatic Discharge Immunity Test Procedures
10.6 Fast Transient Burst Test Procedures (Only for Instrument with AC Power Supply)
10.7 Test Procedures for Voltage Dips and Short Interruptions
10.8 Surge Voltage Test Procedures
10.9 Damped Oscillation Wave Test Procedures
10.10 Voltage Change Test Procedures
10.11 Electromagnetic Compatibility Test of Insulation Resistance Meter
11 Mean Time between Failures
Annex A (Informative) Schematic Diagram for DC Electromagnet
Table 1 Timing of Short-term Supply Voltage Change
Figure 1 Test Circuit Diagram of Series Mode Anti-interference Ability
Figure 2 Test Circuit Diagram of AC Common Mode Interference Rejection Capability
Figure 3 Test Circuit Diagram of DC Common Mode Interference Rejection Capability
Figure 4 Circuit Diagram for Measurement of Active Power Consumption
Figure 5 Wiring Diagram for Measuring Open-circuit Voltage and Current of Insulation Resistance Meter
Figure 6 Wiring Diagram for Measuring Output Voltage of Insulation Resistance Meter