主要性能及技術指標

??電網的電能質量是指供給用戶受電端,并供用戶使用的電能品質的優劣程度的量度。它涵蓋五個方面：供電電壓允許偏差、公用電網諧波、三相電壓不平衡度、電力系統頻率允許偏差、電壓允許波動和閃變。

??NADXB電力諧波測量報警儀的測試對象為45～65Hz交流工頻信號的測量，具體技術參數如下：

1.?測量精度：

表1 ?儀表主要性能及技術指標

注：電流量程參照儀表選配的電流鉗，顧客訂貨時應該確認適宜的電流鉗。

2.?其他參數：

輸入方式：電壓電流均為浮置輸入； ??

輸入阻抗：電壓端子：≥ 600 kΩ；

電流端子：電流鉗

測量信號**峰值：電壓電流均為**量程的1.6倍；

轉換速率：約20000次/秒； ????????

顯示更新：約2次/秒； ?????????

整機功耗：

儀表重量：約 4 kg ????????????????

儀表尺寸: ?寬x高x高：（264×117×330）mm

3.?工作環境：

大氣壓力：（86～106）kPa； ?

溫度：（0～40）℃ ?； ?

濕度：≤85 %RH

工作電源： 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

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