1. Various structural designs, integrated or split structure; special aluminum alloy frame, fireproof composite material table, beautiful appearance.

2. Dual-current loop design, each meter is equipped with two high-quality 100A magnetic latching relays (or using current CT isolation); it can perform automatic primary and secondary loop error tests on the electric energy meter with anti-theft double-loop measurement; manual, Automatic verification; no need to connect the meter twice, through the method of relay switching, the live wire (L) circuit and the neutral wire (N) circuit can be tested separately without decoupling, which can be completed at one time; the two current circuits can be switched through the keyboard or through the calibration meter Software automatic switching;

3. Using the improved digital pulse width modulation technology power source, the output voltage (current) efficiency is high, the heat generation is low, and the stability is high, which completely solves the problem of small current and large deterioration.

4. Perfect fault detection, location, protection and alarm functions, with protection functions such as voltage short circuit, current open circuit, power amplifier overheating, and poor contact.

5. The 2nd to 21st harmonics are superimposed, and the amplitude and phase can be set freely (the harmonic amplitude is within 40% of the fundamental wave, and the phase is 0 to 360.). Harmonic analysis can also be performed on the output quantity and waveforms can be drawn; the harmonic influence test can be performed on the electric energy meter. .

6. Each meter is equipped with independent pulse input with high voltage protection function, multi-function signal input, 485 communication signal interface, multi-function display board with 6-digit digital display (displaying basic error, number of word pulses, meter clock, various status logo, etc.).

7. The test plan is flexibly set, which can complete the basic error, constant check, submerged start test, multi-rate electric energy, voltage, current, power factor, zero line current indication error, etc., daily timing error, time period switching error, need Quantity indication error, demand cycle error, etc. All accuracy requirements are tested.

8. It can perform voltage influence, frequency influence, harmonic influence and other influence tests on various electric energy meters.

9. Tests such as voltage drop and power interruption, and slow rise and fall of power supply can be carried out.

10. Using multi-serial card and multi-channel 485 communication, advanced multi-thread software technology enables multi-position 485 parallel communication, greatly improving communication efficiency.

11. Zero line voltage open circuit test, test the internal zero line open circuit test of the electric energy meter.

12. Chinese and English PC control and management software, the interface is concise and clear, and the full menu graphic mode is easy to learn and use. Database query, statistics, printing and networking are all available.