GB/T 44932-2024 in English
VALIDTesting equipment for DC electrical energy meters
- Issued on:2024-12-31
- Implemented on:2025-07-01
- File Format:PDF
- Delivery:Within 1 day
$338.00
| Standard No: | GB/T 44932-2024 |
| Document status: | VALID |
| Title in English: | Testing equipment for DC electrical energy meters |
| Title in Chinese: | 直流电能表检验装置 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2024-12-31 |
| Implemented on: | 2025-07-01 |
| ICS Classification: | 17.220.20-Measurement of electrical and magnetic quantities |
| Chinese Classification: | N29-Electrical parametric test and power supply unit |
| Professional Classification: | GB-National Standard |
| Related Keywords: | standard source method device needs
0.05-level standard meter method device source method equipment above level electric energy meter inspection devices |
| Related Topics: | electrical energy
First-class electrophoresis experimental device AC and DC power supply unit Meter Packaging Inspection Form AC and DC power supply unit DC sensor calibration device |
《GB/T 44932-2024直流电能表检验装置》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。
Introduction
Analysis of the core content of the standard
GB/T44932-2024 standard systematically specifies the structural performance, measurement characteristics and test methods of DC electric energy meter inspection devices. The main technical points include:
| Key indicators | 0.01 level | 0.02 level | 0.05 level | 0.1 level | 0.2 level |
|---|---|---|---|---|---|
| Basic voltage error (%) | ±0.005 | ±0.01 | ±0.02 | ±0.05 | ±0.1 |
| Ripple factor (%) | 0.5 | 0.5 | 1.0 | 1.0 | |
| Power stability (%) | 0.002(Source method) | 0.005(Source method) | 0.01(Source method) | 0.02(Source method) | 0.05(Source method) |
Technological evolution and innovation
Compared with the previous version, this standard mainly strengthens the requirements in three aspects:
- Electromagnetic compatibility: Clarify the limit requirements of GB4824-2019 for Group 1 Class A equipment
- Safety protection: Added glow-wire test for 960℃ terminal block and 650℃ shell
- Multi-channel output: Specify the error consistency requirements of isolated output circuits (≤30% basic error limit)
Typical application scenarios
A provincial metrology center uses 0.05-level standard meter method device to carry out DC power meter testing:
- Configure the working standard meter with an accuracy of ≥0.05 level
- Control limit 1V-1500V/10mA-600A
- Ripple factor controlled within 0.5%
- 8-hour stability <0.02% (40% of the limit)
Implementation suggestions
| Links | Key Control Points | Reference Clauses |
|---|---|---|
| Factory Inspection | Basic Error, Insulation Resistance, Appearance Inspection | Appendix B Table B.1 |
| Periodic Verification | Annual Stability, Multi-channel Output Consistency | 7.8.3/7.7 |
| Environmental Control | 15-30℃ Temperature Control for Equipment Above Level 0.05 | Table 16 |
Special Note: The standard source method device needs to be equipped with a standard timer, and its error limit is one order of magnitude stricter than the device level (for example, a 0.01-level device requires a ±0.001% timer).
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