... , reactive power, phase, power factor, frequency, power, and a screen display all measured parameters; 3, Measure CT variable ratio ... stability, safety and reliability; 7, Optional 5 A, 20 A, 100 A, 500 A, 1000 A, 2000 A current clamp; 8, Measure 2 ~ 63 times ... be turning to the computer analyzed with; 13, With wireless PDA, convenient operation and data management. Technical Data GF3121Measurement ...