Single-Phase Electricity Tester

1. Overview

The Single-Phase Electric Power Meter Comprehensive Test Instrument is a portable electrical measuring instrument suitable for on-site use. It can directly measure the error of electric energy meters and calibrate the meter constants without interrupting power or altering the metering circuit wiring. It also measures parameters such as voltage, current, frequency, power, and power factor. It can output high and low-frequency energy pulses for external verification purposes. Additionally, it provides three levels of virtual current loads—approximately 0.5A, 2.5A, and 5A—when operating under low load or no load conditions, thereby shortening the verification time and significantly enhancing work efficiency. This tester also features a unique clampless measurement method, ensuring more stable and reliable error measurement with higher accuracy and easier wiring. The operation is simplified with Chinese menu prompts. The working power is directly sourced from the power grid, offering an extremely wide range of adaptability and eliminating your concerns. The interface display utilizes true-color high-resolution LCD with a wide temperature range (-20℃ to +50℃), ensuring clear visibility under any working temperature.

2 Features and Benefits

2.1 Continuous power supply, online measurement of energy meter error and verification of energy meter constants; capable of measuring CT ratio and the composite error of energy meters and CTs.

2.2 Can measure voltage, current, phase angle, frequency, power, power factor, and other electrical parameters in real-time.

2.3 Can measure harmonic content up to 30 times.

2.4 Display voltage and current vector graphics, as well as the waveforms of voltage and current.

2.5 Provides three built-in virtual load settings of 0.5A, 2.5A, and 5A with great convenience, making it easy for on-site calibration when the actual load is zero or nearly zero. The keyboard switch controls the virtual current output, offering easy operation. Using this instrument alone for virtual current calibration of energy meters eliminates the need for a clamp meter, simplifies wiring, and ensures higher accuracy.

2.6 Stores up to 1000 test data entries, featuring a mini-USB interface for transferring data to a computer. It can be connected to the power company's management system as needed, facilitating data management and report printing.