Digital Meter Calibrator

1 Summary SF-3020A 3P Meter Calibrator is designed in accordance with related national standards & regulations. Without matching an external standard meter, it can automatically or manually calibrate and test class below 0.5 single-phase & 3-phase AC/DC ammeter, AC/DC voltmeter, and power meter. Besides, it can also calibrate frequency meter, phase meter, power factor meter, transducer, power load transformer, and power relay. With standardized cabinet and featured by compact size, light weight, multi-function, high stability & automation, top reliability, easy maintenance, it is an ideal calibrating equipment for meter makers. 2 Main Feature 2.1. Digital frequency modulation, phase modulation, amplitude modulation. Intelligently designed, operation is controlled by the keyboard; 2.2. Voltage output with permanent voltage, current output with permanent current, also with fixed phase & fixed frequency; 2.3. Multi-function standard meter with power, electric energy, AC/DC voltage, AC/DC current standards; 2.4. DC output is separated from AC output; 2.5. Output voltage short circuit, output current open circuit automatically protected, and with voice & light warning; 2.6. LED display with back-light; 2.7. Adopt programming method for calibrating meter, directly display the error and print the testing result; 2.8. With software revising function for standard meter(excluding electric energy meter) 3 Main Technique Parameter 3.1. Voltage output steps/positions: 30V, 100V, 200V, 400V, 600V, with fine regulation 0.01%, each step has 20% allowance; 3.2. Current output steps/positions: 0.1A, 0.5A, 1A, 2.5A, 5A, 10A, 20A, with fine regulation 0.01%, each step has 20% allowance; 3.3. Frequency output range: 45 65Hz, with fine regulation 0.01Hz; 3.4. Phase output regulation: 0 360°, with fine regulation 0.1°; 3.5. Phase angle symmetry degree 120°±0.5°(3P4W voltage); 60°±0.5°(3P3W voltage); current 120°±1°; 3.6. Current & voltage output wave form distortion <0.5%; 3.7. DC voltage and AC voltage is the same, and add DC 75mV step; 3.8. DC current and AC current is the same, and add DC 1mA step; 3.9. DC voltage & current output wave≤1%; 3.10. Output voltage, current, power stability 0.02%/2(minutes); 3.11. Output voltage, current accuracy 0.1%; 3.12. Each phase's rated output capacity of voltage & current is 20VA; output DC voltage, current rated capacity is 15VA; 3.13. Power supply: 220V±10%, 50Hz±1%; 3.14. Working environment: -5 35°; relative humidity≤85%; 3.15. Standardized cabinet size: long350xwide 430xhigh190mm 3.16. Weight: 25kg.