主要性能及技术指标
电网的电能质量是指供给用户受电端,并供用户使用的电能品质的优劣程度的量度。它涵盖五个方面:供电电压允许偏差、公用电网谐波、三相电压不平衡度、电力系统频率允许偏差、电压允许波动和闪变。
NADXB电力谐波测量报警仪的测试对象为45~65Hz交流工频信号的测量,具体技术参数如下:
1. 测量精度:
表1 仪表主要性能及技术指标
参 数 | 测量范围 | 工 作 误 差 | 分辨力 | 备 注 |
交流电压 | ( 10~500)V | ±(0.4%读数+0.1%量程) | 0.1V | **:600V |
交流电流 | 选配电流钳 | 0.001A | **:1.1倍 | |
功 率 | U*I*PF | PF=1.0:±(0.4%读数+0.1%量程) PF=0.5:±(0.8%读数+0.2%量程) | ≥200W 1W | 测试电流 > 0.01*电流量程 |
功率因数 | 0.20~1.00 | ±0.02 | 0.01 | > 0.5A; |
频 率 | (45~65)Hz | ±0.01 Hz | 0.01 Hz | U > 50 V |
电 能 | 9999.9 MWh | PF=1.0:±(0.4%读数+0.1%量程) PF=0.5:±(0.8%读数+0.2%量程) |
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时 间 | 1m~999h59m | ±0.05% | 1 秒钟 |
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谐 波 | 1 ~50次 |
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实时时钟 |
| 24 小时格式 | 1 秒钟 |
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注:电流量程参照仪表选配的电流钳,顾客订货时应该确认适宜的电流钳。
2. 其他参数:
输入方式:电压电流均为浮置输入;
输入阻抗:电压端子:≥ 600 kΩ;
电流端子:电流钳
测量信号**峰值:电压电流均为**量程的1.6倍;
转换速率:约20000次/秒;
显示更新:约2次/秒;
整机功耗:
仪表重量:约 4 kg
仪表尺寸: 宽x高x高:(264×117×330)mm
3. 工作环境:
大气压力:(86~106)kPa;
温度:(0~40)℃ ;
湿度:≤85 %RH
工作电源: AC 220V±15% 50/60Hz
The main performance and technical indicators
This power quality of the power grid is a measure of the quality of the power supplied to the user at the receiving end and for the user to use. It covers fiveaspects:supplyvoltage tolerance, utility harmonic, three-phase voltage unbalance, power system frequency tolerance, voltage fluctuation and flicker.
NADXB power harmonic measurement alarm object for the 45 ~ 65Hz AC frequency measurement of the signal, The specific technical parameters areasfollows:
1. Measurement accuracy:
Table 1. main instrument performance and technical indicators
Data | Measuring range | Working error | Resolution | Remarks |
AC Voltage | ( 10~500)V | ±(0.4%Reading + 0.1% of range) | 0.1V | Max:600V |
AC Current | Current clamp canoption | 0.001A | Max:1.1 times | |
Power | U*I*PF | PF=1.0:±(0.4%Reading + 0.1% of range) PF=0.5:±(0.8%Reading + 0.2% of range) | ≥200W 1W | Test current > 0.01*Current range |
Power factor | 0.20~1.00 | ±0.02 | 0.01 | > 0.5A; |
Frequency | (45~65)Hz | ±0.01 Hz | 0.01 Hz | U > 50 V |
Electricity | 9999.9 MWh | PF=1.0:±(0.4%Reading + 0.1% of range) PF=0.5:±(0.8Reading +0.2% of range) |
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Time | 1m~999h59m | ±0.05% | 1Second |
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Harmonics | 1~50 times |
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Real time |
| 24Hour Format | 1Second |
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Note: The current range of reference meter matching current clamp, customer orders should confirm the appropriate current clamp.
2. Other parameters:
Input mode: voltage and current are floating input;
Input impedance: Voltage terminals: ≥600 kΩ;
Current terminal: current clamp
Measurement signal maximum peak: voltage and current are 1.6 times the maximum range;
Conversion rate: about 20,000 times / second;
Display update: about 2 times / sec;
Power consumption:
Instrument weight: about 4 kg
Meter size: width x height x height: (264 ×117×330) mm
3. Working environment:
Atmospheric pressure: (86 ~ 106) kPa;
Temperature: (0 ~ 40) ℃;
Humidity: ≤85% RH
Working power: AC 220V ±15% 50 / 60Hz