Through the test, it can be judged whether the user has the behavior of stealing electricity, whether the measurement accuracy meets the requirements of the national standard, whether the user causes harmonic pollution to the quality of the power grid, whether the power factor is up to standard, and the loss of the power system is avoided.
The hand-held three-phase electric energy meter field calibrator is equipped with a 500A high-precision clamp type transformer, which can directly measure and diagnose whether the low-voltage energy metering device is normal, and the standby electric monitoring and phase volt-ampere meter function can be used in the power inspection. Power supply, metering, dispatching, and relay protection departments are used as standards and inspection tools, and can realize the functions of various test instruments; it is a very cost-effective equipment.
2. Real-time detection of three-phase voltage, current, active power, reactive power, phase angle, power factor, frequency, primary current and secondary current, ratio, polarity of low voltage CT;
3. Visually display the vector diagram of the three-phase voltage and current, and prompt the 48 metering device wiring judgment results;
4. The three-phase electric energy meter on-site calibrator can carry out the type test of the electric meter, and investigate the user's thief-cutting means for changing the nameplate and the character wheel;
5. Equipped with high-precision clamp-type current transformer, it is easy to sample and safe; it can detect the comprehensive error of three-phase four-wire and three-phase three-wire metering device without power failure and without changing the wiring of the metering circuit (including wiring, electric energy meter, low voltage CT) error);
6. Various types of reactive energy meters can be verified;
7. Can store 2000 pieces of test data, including meter information, voltage, current, phase, power, power factor, vector map, etc.;
8. The three-phase electric energy meter field calibrator has a built-in large-capacity lithium-ion rechargeable battery, which can work continuously for 8 hours;
9. With RS232 interface, it can communicate with computer to realize data management and report printing;
10. It can detect the 2nd to 32nd harmonics and display the content or amplitude of each harmonic; it can automatically calculate the harmonic distortion;
11. Real-time waveforms of voltage and current of each phase can be displayed to determine whether the quality of voltage and current is good;
12. Scalable measurement of CT ratio, polarity, ratio error and angular difference;
2. Electric flow range: 5A, 500A (clamp meter), 5A (built-in current transformer);
3. Frequency range: 45Hz ~ 65Hz, accuracy: ±0.01Hz;
4. Phase measurement range: 0°~360°, accuracy: ±0.1o;
5. Current, voltage, active power, active energy accuracy level: 0.05 or 0.1 (built-in current transformer), 0.3 or 0.5 (clamp-type current transformer);
6. Reactive energy accuracy level: 0.3 (built-in current transformer);
7. Input impedance: voltage loop ≥300kΩ, current loop ≤0.01Ω;
8. Output standard power constant: 10000p/kw.h(5A), 100 p/kw.h(500A);
9. Working temperature: -20 ° C ~ +50 ° C;
10.24 hours variation: ≤0.02%
11. Working power supply: built-in high performance lithium ion rechargeable battery;
12. Power consumption of the whole machine: less than 3VA;
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