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Main Characteristics

The device meets the requirements of DL/T 614-1997 and DL/T 614-2007 "Multifunctional Electric Energy Meter". The function of the device is divided into two parts, one part is to test the conventional functions of the electric energy meter, and the other part is to test the state grid smart meter. special function.

1: General function

(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, fully 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-up test; according to the requirements of the regulations, the waiting time of the start-up test and the waiting time of the creep test can be automatically calculated, and the start-up test can be determined. and whether the sneak 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 setting, various verification schemes, management authority setting, weekly inspection plan, etc.;

(11) Can measure voltage, current, power, power factor, phase, frequency and other parameters;

(12) The phasor diagram and the waveform diagram of the in-phase voltage and current can be displayed 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) The output voltage and current waveform distortion can be measured;

(15) The device is equipped with a serial server or serial communication board; each table is equipped with 1 to 2 485 communication ports. Multi-threaded software technology, parallel communication mode, greatly improve work efficiency.

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

(17) It has the function of running word test.

(18) The device has soft start and stop functions of voltage and current output, protection and alarm functions 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 features

(1) Communication test; communication protocol consistency check; data transmission line anti-jamming test; carrier communication performance test (only for stations with carrier communication module)

(2) Broadcasting school hours;

(3) Daily timing error test;

(4) Data verification inside 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) Check the basic functions of the electric energy meter (including electric energy metering function, tariff and period function, demand reset function, event recording function, programmer preset function, display function, register check, communication interface check), etc.

(14) It has cost control function test, supports two types of electric energy meters, local cost control and remote cost control, and safety certification test.

(15) The trip relay can be tested.

(16) The event recording function of the smart meter can be tested, including voltage loss, current loss, phase loss, full voltage loss, power failure, programming, zero reset, switch cover, and gate opening.

(17) Consistency test; error variation test; error consistency test; load current rise and fall variation test; current overload test (only for directly connected meters)