PMBZ Automatic Variable Ratio Group Tester

Specifications

Characteristics of tester:
1. Automatic measurement wiring group.
2. Automatic group transformation.
3. Automatic switching phase sequence.
4. Automatic shift ranging.
5. Automatic calibration.
6. Input the standard ratio, it can automatically calculate the relative error.
7.When the measurement is completed, it can cut off the testing voltage automatically .
8. Setting the data, the measured results can be saved automatically, and can be view the previous data.
9. Measuring loaded transformer ratio, only need to enter once.
 
Parameters of tester:
1. Ratio measuring range: 1-10000
2. Group:1-12:00
3. Accuracy: 1-1000  0.2 grade,1000-10000 0.5 grade
4. Power supply: AC220V ± 10%, 50HZ
5. Operating temperature: -5 oC 40 oC
6. Operating humidity: <85%
7. Volume: 430mm × 320mm × 215mm
8. Weight: 10 kg
 
Tester information:
1.Insurance 1 is 2A, Insurance 2 is 0.5A. If the testing line is short-circuit , the high and low voltage will be reversed, will burn the fuse. Once fused, it will be displayed " measuring , wait ! " and then stop to operate and cut off the power.. Please replace the same capacity insurance, then retesting .
2.Maintain the connections is fine. The instrument should be well grounded !
3.Ensure the workplace keep away from strong electric field , magnetic field and high-frequency devices. Power supply interference should be the smaller the better, and use light line. If the power supply interference is still large, it better to use the AC purified power,.the purified AC power supply capacity just larger than 200VA will do.
4.During the operating, if there is disorder on LCD screen, and without any response after press all the button, or the measured value is much very far away from the actual value, please press the reset button, or turn off the power, then restart the operate .
5.If the displays without character display ,or the color is weak, please adjust the brightness potentiometer to the appropriate location . Brightness potentiometer is a multi-turn potentiometer with 10 laps !
6.The instrument should be stored in dry and ventilated place , if unused for a  long-term, or stored in a humid environment, it need to extend the warm-up time before using , to remove  the moisture.
7.Communication port used for debugging.