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
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:< 5W;
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 maiperformance andechnical indicators
This power quality ofhe power grid is a measure ofhe quality ofhe power suppliedohe user atheeceiving end and forhe usero use. Icovers fiveaspects:supply voltageolerance, utility harmonic,hree-phase voltage unbalance, power system frequencyolerance, voltage fluctuatioand flicker.
NADXB power harmonic measuremenalarm objecforhe 45 ~ 65Hz AC frequency measuremenofhe signal, The specificechnical parameters are asfollows:
1. Measuremenaccuracy:
Table 1. maiinstrumenperformance andechnical indicators
Note: The cueange ofeference meter matching cuenclamp, customer orders should confirmhe appropriate cuenclamp.
2. Other parameters:
Inpumode: voltage and cuenare floating input;
Inpuimpedance: Voltageerminals: ≥600 kΩ;
Cueerminal: cuenclamp
Measuremensignal maximum peak: voltage and cuenare 1.6imeshe maximumange;
Conversiorate: abou20,000imes / second;
Display update: abou2imes / sec;
Power consumption:<5W;
Instrumenweight: abou4 kg
Meter size: width x heighx height: (264 ×117×330) mm
3. Working environme:
Atmospheric pressure: (86 ~ 106) kPa;
Temperature: (0 ~ 40) ℃;
Humidity: ≤85% RH
Working power: AC 220V ±15% 50 / 60Hz