AL421 Power Harmonic Measurement
Performance standards:
GB156-1993, GB/T762-1996, GB/T14549-1993.

Features:
1, the input and output isolation technology used to make equipment more secure.
2, portable structure, small size, light weight, built-in high-performance lithium battery, use more convenient.
3, using high-precision A / D (16 bits), sampling rate, high precision.

4, using DSP + CPLD core processing speed, the software feature-rich, greatly improving the test efficiency.
5, line measuring the grid frequency, harmonics, power factor, real power quality parameters of the national standard.
6, real-time display three phase voltage and currentwaveform.
7, real-time display three phase voltage and current harmonic content of 1 to 51 and the spectrum.
8, real-time display of three-phase voltage and current angle and phase diagram.

9, provide USB interfaces for data transfer to your computer.
10, built-in miniature thermal printer that can print on-site real-time test data at any time and historical data.
11, built-in 4M memory, can store 2000 test data set.External 256M U disk, you can store 3 consecutive months of historical data.

12, configuration management and powerful back-analysis software, user-friendly, with a graphical and curve analysis.
Product parameters:
1, the frequency measuring range: 45 ~ 55Hz, error: ≤ 0.02Hz.
2, input voltage range: 10 ~ 450V.
3, the input current range: 5A.

4, the amplitude of fundamental voltage and current: voltage tolerance ≤ 0.5 cage FS; current allowable error ≤ 1% FS.
5, the phase difference between fundamental voltage and current measurement error: ≤ 0.5 .
6, the harmonic voltage measurement error: ≤ 0.1%.
7, harmonic current with measurement error: ≤ 0.2%.
8, three-phase voltage unbalance error: ≤ 0.2%.
9, the voltage deviation of the error: ≤ 0.2%.
10, the power deviation: ≤ 0.5%.
11, Working Hours: The internal battery can work continuously for 10 hours.
12, Dimension (mm): 300x225x135.
13, Weight: 2kg.