I.Overview

Power quality refers to the quality of the AC power supply via the utility grid to the user, which normally means the good or bad situation of the electric energy in transmission line. Power quality problems are mainly caused by the load side of the terminal. For example, impact reactive load will lead to serious fluctuates to power network voltage, and decrease the quality of power supply.

With the development of power electronics technology, on one hand, it brought positive side to the modern industrial energy efficiency and energy conversion. On the other hand, while the power electronic devices are widely used in all walks of life, it also has brought new and more serious damage to the power quality, and has become the main source of harmonic in grid.

When it is interfered or contaminated, grid power quality can’t reach the national standards, so it has to be targeted on the grid power quality improvement. To understａnd the actual situation of power quality, you must have the appropriate equipment to test and analysis the actual situation. Counter the domestic condition, our company developed the professional power quality analysis instrument, which is suitable for the country.

II.Technical Data

1. Input characteristics

Voltage measuring range: 0～200V～800V, automatic cutting gear.

Current measurement range

Clamp transformers (three types): 5A / 25A (standard)

100A / 500A (optional)

400A / 2000A (optional)

1000A / 5000A(optional)

Phase angle measuring range: 0 ~ 359.99 °.

Frequency measurement range: 45 ~ 55Hz.

Voltage channels: three-channel (UA, UB, UC).

Current channels: three-channel (IA, IB, IC).

Maximum harmonic analysis times: 63 times.

2. Accuracy

Measurement of electrical parameters section:

Voltage: ± 0.1%

Frequency: ± 0.01Hz

Current, power: ± 0.5%

Phase: ± 0.2 °

Power quality section:

Fundamental voltage tolerance: ≤0.5% F.S.

Fundamental current tolerance: ≤1% F.S.

Before using the instrument, please read this manual, and operate and maintain the instrument according to the manual to prolong its service life.

"Just a light press, the test will be completed automatically" is the operating characteristics of this instrument.

If you are satisfied with this instrument, please tell your colleagues; if you are not satisfied with this instrument, please call (0312) 6775656 to tell you to serve you at all times-Baoding Huazheng Electric Manufacturing Co., Ltd., our company will definitely make you satisfied