Main Characteristics

1. Regular functions

1. It can verify various electronic and electromechanical three-phase multi-function energy meters, electronic and inductive three-phase energy meters, three-phase multi-rate energy meters, prepaid energy meters and ordinary energy meters. . Reactive energy meters that can verify various measurement principles (natural reactive power and artificial reactive power), including three-phase four-wire true reactive power, three-phase three-wire true reactive power, three-element 90° artificial reactive power, and two-element 90° artificial reactive power Reactive power, two-element 60° man-made reactive power and single-phase electric energy meters, etc.

2. According to the requirements of national verification regulations or power industry standards, automatic verification can be implemented for verification items such as creep, start, basic error, standard deviation, and 24h variation. You can also customize the program for verification; you can also choose test points for single-point verification.

3. It can measure the amount of change caused by the influence of voltage, frequency, harmonics, reverse phase sequence, voltage unbalance, external magnetic field, etc.;

4. Automatically identify the color code, so that the color codes of all the inspected watches stay in the front position, so as to carry out the creep test and start test; according to the requirements of the regulations, the waiting time of the start test and the wait time of the creep test can be automatically calculated, and the start and Whether diving is qualified.

5. Electric energy meters of the same specification, three different constants and different grades can be verified at the same time;

6. Each inspected watch is equipped with a dedicated 6-digit display error calculator;

7. The device has a wide range of output and measurement, and can verify various commonly used energy meters. All current and voltage limits are automatically switched (including 100A current). The output power has a large margin and can work stably for a long time under the maximum load.

8. The verification process is automatically monitored by the computer, the data is rounded off, the verification conclusion is determined, and the data is saved. You can query, browse, and print verification certificates and inspection records.

9. Support barcode input, error curve graph, user system, error upper and lower limit settings, various verification schemes, management authority settings, weekly inspection plans, etc.;

10. Can measure voltage, current, power, power factor, phase, frequency and other parameters;

12. It can display the phasor diagram and the waveform diagram of the in-phase voltage and current in real time;

13. Harmonic influence inspection can be carried out, the harmonic order can be set within the range of 2 to 21, the load harmonic amplitude can be set within the range of 0-40%, and the harmonic phase can be set within the range of 0 to 360°;

14. It can measure the distortion of output voltage and current waveform;

15. The device is equipped with RS-485 or RS-232 communication interface;

16. There is a breakpoint resume function, which allows to suspend the experiment of a certain epitope, and allows to pause and continue the current experiment;

17. It has the function of running word test.

18. The device has the function of soft start and stop of voltage and current output, protection and alarm function of short circuit of voltage output terminal and open circuit of current output terminal, all-round protection of output power amplifier, and high reliability;

2. Special functions

1. Communication test;

2. Broadcast school hours;

3. Daily timing error test;

4. Data validation within the table;

5. Read and write table device number;

6. Time zone period testing and setting;

7. Demand indication error test;

8. Demand cycle error test;

9. Time period switching error test;

10. Combined error test;

11. Voltage drop and interruption test;

12. Positive and negative active power, positive and negative reactive power error test;

13. Basic function inspection of electric energy meter (including electric energy metering function, tariff and period function, demand reset function, event recording function, programmer preset function, display function, register inspection, communication interface inspection), etc.