... AC current and voltage, frequency, power factor, phase sequence, power, synchronization instructions and other non-power measurements. It has been widely used ... s2(15g), 490m/s2(50g). RMS acceleration, 6.06g. vibration time,15 min. Anti mechanical shock,complies with the standard ... twice, 3 times and so on according to the user’s requirements. Its function is to indicate the approximate transient ...