HRPX Industrial Frequency Phase Meter
  The main technical indexes
Measuring method of phase: either two lines U-UU-II-I
Measuring precision of phase: 0.2 grade
U(U-I method), 10mA10A divided into 4 grades
I(on-line detaction100mA5A)
Range of frequency testing: 4060Hz, maximum error is 0.01Hz , and it can measure the frequency of either one line or two lines
Signal voltage input: 5500V
Current signal input: 0.55A
Range of tested power factor: cos10 sin01