LWS 3900 Active Three-phase Watt-hour Meter Field Calibration Device characteristic: 1. The meter source is integrated to detect the error of various three-phase single-phase electric energy meters and the word error; 2. After setting the test point, the internal automatic shift does not require human intervention; 3. The core circuit related to the accuracy has anti-corrosion, dust-proof and moisture-proof shielding treatment, and the long-term stability of the accuracy is higher. 4. Ultra-strong electromagnetic compatibility processing mechanism, cooperating with electromagnetic experimental equipment to detect other measurement standard products. 5. It can provide pulse output for positive and negative active power, positive and negative reactive power and apparent power, and the constant is programmable output. 6. Provide LAN, RS232, USB and other communication interfaces. 7. The 7-inch TFT display interface is clear. 8. Provide machine software communication protocol interface to establish automatic calibration and detection system for secondary development. 9. Assess all kinds of electric energy meters or electric energy metering equipment that are lower than their grades. 10. As the production and test standard for various AC current, AC voltage, frequency, phase, power and other electrical parameters meters. 11. Check the error of various mechanical and electronic energy meters, and check the error of each voltmeter, current, frequency, phase and other meters. 12. The double error test channel can simultaneously verify the error of active and reactive power or the error of two electric energy meters. 13. Voltage test points: 80%, 90%, 100%, 110%, 120%. 14. Current test points: 1%, 5%, 10%, 20%, 50%, 100%, 120%. 15. Phase test points: 0.5L, 0.86L, 1.0, 0.86C, 0.5C. (Any angle can also be set) 16. The amplitude of three-phase voltage and current can be adjusted separately, and the adjustment fineness: 10%, 1%, 0.1%, 0.01%; The adjustment range is up to 125%. Technical parameters: measuring range Voltage output: AC 0-440V capacity 120VA Current output: 0.01-60A current circuit 180VA Frequency: 45-55Hz Phase range: - 180 degrees to+180 degrees (0 degrees to 360 degrees) Output distortion Voltage: ＜ 0.5% Current: ＜ 0.5% Electric energy accuracy Active electric energy: ± 0.05%, ± 0.1% Reactive electric energy: ± 0.05%, ± 0.1% Power: ± 0.05%, ± 0.1% Voltage: ± 0.05%, ± 0.1% Current: ± 0.05%, ± 0.1% Phase: ± 0.1 degrees Frequency: ± 0.01Hz Output gear Voltage range: 55V, 110V, 220V, 440V (maximum 120% per range) Current gear: 60A, 20A, 10A, 5A, 1A, 0.2A (maximum 120% per gear)
characteristic: 1. The meter source is integrated to detect the error of various three-phase single-phase electric energy meters and the word error; 2. After setting the test point, the internal automatic shift does not require human intervention; 3. The core circuit related to the accuracy has anti-corrosion, dust-proof and moisture-proof shielding treatment, and the long-term stability of the accuracy is higher. 4. Ultra-strong electromagnetic compatibility processing mechanism, cooperating with electromagnetic experimental equipment to detect other measurement standard products. 5. It can provide pulse output for positive and negative active power, positive and negative reactive power and apparent power, and the constant is programmable output. 6. Provide LAN, RS232, USB and other communication interfaces. 7. The 7-inch TFT display interface is clear. 8. Provide machine software communication protocol interface to establish automatic calibration and detection system for secondary development. 9. Assess all kinds of electric energy meters or electric energy metering equipment that are lower than their grades. 10. As the production and test standard for various AC current, AC voltage, frequency, phase, power and other electrical parameters meters. 11. Check the error of various mechanical and electronic energy meters, and check the error of each voltmeter, current, frequency, phase and other meters. 12. The double error test channel can simultaneously verify the error of active and reactive power or the error of two electric energy meters. 13. Voltage test points: 80%, 90%, 100%, 110%, 120%. 14. Current test points: 1%, 5%, 10%, 20%, 50%, 100%, 120%. 15. Phase test points: 0.5L, 0.86L, 1.0, 0.86C, 0.5C. (Any angle can also be set) 16. The amplitude of three-phase voltage and current can be adjusted separately, and the adjustment fineness: 10%, 1%, 0.1%, 0.01%; The adjustment range is up to 125%.
