Name: PTW20 Secondary voltage drop and load tester

　　Functions and characteristics:

　　1. PT secondary voltage drop testing functions: test the ratio value, angle value and voltage drop.

　　2. CT secondary load testing functions: test current transformer's load, resistence and reactance.

　　3. PT secondary load testing functions: test potential transformer's load, conductivity and electrical susceptance

　　4. PT、CT secondary voltage circuit, current, phase and frequency measurement

　　5. PT、CT secondary circuit active, reactive and frequency factor's measurement

　　6. Support three phase online measurement sumultaneoously

　　7. Measurement of the kernel adopts ARM Crotex-M3 processor

　　8. Gather the spot temperature and humidity at actual time

　　9. Test the content of three power harmonic

　　10. 640x480 full LED big screen, full chinese menu operation

　　11. Large capacity lithium battery power supply, and display the rest electricity