ETCR4020 Large Caliber Double Clamp Digital Phase Voltmeter (also known as: full-automatic double clamp digital phase voltmeter) is a full-automatic, multifunctional, digital and intelligent instrument specially developed by our company for field testing, is a comprehensive upgrade of mechanical knob type phase voltammeter, which reduces the complexity of operation and reduces the possibility of misoperation. It has the characteristics of high accuracy, high stability, low power consumption and convenient to use etc. Under the condition of the tested circuit does not open-loop, it can measurement of three-phase AC voltage, current, phase between voltages, phase between current, phase between current and voltage, frequency, phase sequence, active power, reactive power, apparent power, power factor, current vector sum, judge transformer wiring group, sensibility and capacitive circuit, test the secondary circuit and differential bus protection system, read the phase relationship between differential protection between each groups CT, check watt hour meter wiring correctly or not, maintenance line equipment, etc., to provide a safe, accurate and convenient new power meter for electricity inspectors.

ETCR4020 Large Caliber Double ClampDigital Phase Voltmeter select and use with new type material to design and manufacture the out shell mould,with shake proof, skid proof, and high insulation sheath. Adopts 2.8 inch color LCD screen, all parameters are displayed on the same screen, clear and obvious, which shows the exquisite and luxurious appearance. The meter is equipped with USB interface, which can store 1200 groups of data, upload the stored data to the computer by the system software, realize online real-time monitoring and historical query, dynamic display, and also can read, save, report, print historical data, etc. The instrument adopt large caliber current clamp, suitable for testing of thick conductor, can meet different place test demand.

Large Caliber Double Clamp Digital Phase Voltmeter also name full-automatic double clamp digital phase voltmeter, multifunction double clamp digital phase voltmeter, full-automatic phase voltmeter, digital phase voltmeter etc., including the functions of the general mechanical double-clamp digital phase voltmeter, suitable for electric power, petrochemical, metallurgy, railway, industrial and mining enterprises, scientific research institutions, measurement departments. Especially suitable for electric energy billing system and relay protection system, its power supply Marketing Department of electric energy measurement, electricity inspection, electric power inspection, the production and technology department of the table connected to electricity, relay protection, differential detection, starting test, transformation maintenance, or electric power training, skills competition and so on.