Portable Three-Phase Energy Meter On-Site Calibrator
A compact, lightweight, simple, and practical metering calibration tool that can calibrate the error of energy meters on-site, check whether the wiring of the metering device is correct, detect the transformation ratio and polarity of current transformers used for metering, and measure user power quality (including voltage harmonics, current harmonics, voltage balance, total harmonic distortion, etc.); through testing, it can determine whether the user has electricity theft behavior, whether the metering accuracy meets national standards, whether the user causes harmonic pollution to the power grid quality, and whether the power factor meets the requirements, thereby avoiding losses in the power system.
The instrument is equipped with a 500A high-precision clamp-type transformer, which can directly measure and diagnose whether the low-voltage energy metering device is functioning correctly. It also has the functions of power consumption monitoring and phase volt-ampere meter, and can be used as a standard and inspection tool in departments such as electricity inspection, power supply stations, metering, dispatching, and relay protection, and can realize the functions of multiple testing instruments; it is a device with extremely high cost performance.
Portable Three-Phase Energy Meter On-Site Calibrator
Main features:
1. Adopts a large-screen high-dot-matrix color LCD; Chinese characters and graphical display with high clarity;
2. Can detect three-phase voltage, current, active power, reactive power, phase angle, power factor, frequency, primary current and secondary current of low-voltage CT, transformation ratio, and polarity in real time;
3. Intuitively displays the vector diagram of three-phase voltage and current, and directly gives the wiring judgment results for 48 types of three-phase three-wire metering devices;
4. Can perform the running test of the energy meter to detect the theft of electricity by replacing the nameplate and the number wheel;
5. Equipped with a high-precision clamp-type current transformer for convenient and safe sampling; can detect the comprehensive error (including wiring, energy meter, and low-voltage CT error) of three-phase four-wire and three-phase three-wire metering devices without power outage or changing the metering circuit wiring;
6. Can calibrate various types of reactive energy meters;
7. Built-in large-capacity data storage can store detection data of 2000 meters, including meter information, voltage, current, phase, power, power factor, vector diagram, etc.; data can be retained for more than 100 years after power failure;
8. Has RS232 interface, can communicate with computer, realize data management and report printing;
9. Can detect 2nd to 32nd harmonics, display the content or amplitude of each harmonic; can automatically calculate total harmonic distortion;
10. Can display real-time waveforms of each phase voltage and current to judge whether the quality of voltage and current is good;
11. Can expand to measure CT transformation ratio, polarity, ratio error, and angle difference;
12. Built-in high-performance lithium-ion rechargeable battery, can work continuously for more than 8 hours.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
