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ZC25 Megger Tester Manual1) Application:Use to test motor, cable, transformer, and other electrical insulationresistance.2) Tolerance: +/- 10% 0 to 1000Mohm- Operating temperature and relative humidity: -25 to 40 degree Celsius.RH<80%- Swing speed: 120 RPM- Environment EMF: @0.4kA/m, meter acceptable variation is index value100%.- Tilt affect: Tilt at 5 degree from leveling, acceptable variation is indexvalue 50%.- Insulation resistance: Meter and housing >20Mohm- Max AC 50Hz Voltage: ZC25-4: 1500V- Display range: 65mm- Weight: 2kg- Size: 205X120X145mm3) Circuit Diagram:G-Hand Swing GeneratorE- GroundL- CircuitG- Protective RingRv- Limiting voltage resistorRi- Limiting Current resistoLv- Meter Voltage WireLi- Meter Current WireC- CapacitorV- Rectifier Diode4) Instruction:- Application must be leveling and away from strong EMF.- Under test unit, one terminal connects to “E” Socket, another terminalconnects to “L” Socket. Swing the handle in 120 RPM (around is ok). ThenCan read the insulation resistance. (Graph 1)- To test the ground insulation (Graph2)- To test cable outer and core resistance (Graph3)5) Caution:- Prevent vibration- Don’t use the meter around high voltage area, especially not at lightning- Don’t try to use the meter to measure under testing unit with AC or DCvoltage.- Increase the rotational speed slowly.Shipping package:ZC25-4 unit x 1pc