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 five aspects: 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 as follows:

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 can option 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 0.1W

≥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）

Time 1m~999h59m ±0.05 ％ 1 Second

Harmonics 1~50 times

Real time 24 Hour Format 1 Second

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: