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 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:supply voltage 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 are asfollows:

1. Measurement accuracy:

Table 1. main instrument performance and technical indicators

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:<5W;

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