... , frequency, phase sequence, power, current vector sum. Clamp Size: 35×40mm, Phase: 0~360°, AC Current: 0.0mA~20.0A ... , AC Voltage: 0.00 V~600V, Active Power: 0.0W~12kW, RS232 inferface, Data Storage: 500 sets. .Technical ... to keep data, " DH " symbol appearsData Storage500 setsRS232 InterfaceUSB-RS232 interface, download data to computer for analysis and managementAutomatic ShutdownAutomatic ...