1 Summary

 SF-3020W 3P Meter Calibrator is designed in accordance with related national standards & regulations. It can calibrate and test class below 0.5 single phase ammeter, voltmeter, frequency meter, power factor meter, 1P/3P active power meter & reactive power meter, phase meter.

This calibrator is composed of 3 parts: microcomputer control system, signal source digital synthesis and power magnification. 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 Function

2.1. Voltage output provides 3 steps/positions: Can conduct consecutive regulation within 0~400V; Current output provides 5steps/positions: Can conduct consecutive regulation within 0~40A, with regulation fineness 0.01%;

2.2. Frequency can be regulated within 45Hz~65Hz, with regulation fineness 0.01Hz;

2.3. Phase can be regulated within 0~360°, with regulation fineness 0.1°;

2.4. Outputted voltage & current of each step/position displayed digitally;

2.5. Input operation displayed directly by the monitor;

3 Main Feature

3.1. Integrated meter calibrating power supply & standard, portable for on-the-spot calibrating;

3.2. Digital frequency modulation, phase modulation, amplitude modulation synthesized by digital wave form;

3.3. Intelligently designed, operation is controlled by the keyboard;

3.4. Output voltage short circuit, output current open circuit automatically protected;

3.5. Long-term power stability is high;

3.6. Voltage output with permanent voltage, current output with permanent current, also with fixed phase & fixed frequency;

3.7. Simple calibrating operation, convenient for user. 

4 Technique Parameter

4.1. Calibrator's synthetic error: Power class 0.1; Voltage & current class 0.2;

4. 2. Voltage output provides 4 steps/positions: 100V, 220V, 380V, each step can be consecutively regulated within 0~120%, with fine regulation 0.01%;

4.3. Current output provides 6 steps/positions: 40A, 10A, 5A, 2.5A, 1A, each step can be consecutively regulated within 0~120%, with fine regulation 0.01%;

4.4. Outputted power stability <0.05%/2minutes (peak ~ peak value);

4.5. Current & voltage output wave form distortion <0.5%;

4.6. Each phase's maximum output capacity of voltage & current is 20VA, at 40A it can reach 40VA;

4.7. Phase output can be regulated within 0~360°, with fine regulation 0.1°;

4. 8. Frequency output can be regulated within 45Hz~65Hz, with fine regulation 0.01Hz;

4.9. Output A phase voltage & current monitored by 41/2 digits, accuracy 0.2%; B & C phase voltage & current monitored by 3 1/2 digits, accuracy 0.5%;

4.10. 3 phases' phase angle symmetry degree 120°±0.5°(3P4W); 60°±0.5°(3P3W) ;

 4.11. Working environment: -5~40; relative humidity≤75%;

 4.12. Power supply 220V±5%,50Hz±1%;

 4.13. Standardized cabinet size: long350xwide 430xhigh190mm

 4.13. Weight: 28.5kg.

Digital Meter Calibrator