M191 Insulation Tester Calibrator________________________ MEATEST.o.
Don'tdisconnecttest wires whenmeasuringisinprocess.
Be aware that the test voltage for high resistance
measurements dangerous and can cause
electric shock!
Testleads deliveredwiththe calibratorareapprovedforapplication upto5kVDC.
Notes:
The capacitancefunction designedfor DCapplications. Any other application not
recommended.
4.8 DPP Dielectric andpolarization parameters
DPP function enables direct calibration isolation meters which are equipped with function DAR (dielectric
absorption ratio), (polarization index) (polarization ratio).
PI (600s) (60s)
PR parameter defined ratio resistance measured after the test voltage connected the
measured object and resistance measured 180 after the test voltage connected. Disconnection can cause damageofthe calibrator. When using
ACvoltageover 100 Vthe calibratorcanbedamaged. test voltage not allowed apply.
Depending status, the DAR mode can one following submodes:
Operating modes
20 User Manual
. Similarly the PSP mode the DPP mode is
based switching three different values resistance the output terminals predefined time sequence. defined ratio resistance R1measured after the test voltage is
connected the measured object and resistance measured 600 after the test voltage connected.
Thecapacitancefunctionisdesignedfortestingofinsulationmetersandmegaohmmeters which canmeasure the
capacitance test circuit based charging and discharging the circuit.Disconnect M191 output terminals using the button OUTPUT ON.
Parameters definition
In isolation testers DAR parameter defined ratio resistance R1measured after the test voltage is
connected the measured object and resistance measured after the test voltage connected.
DAR (60s) (30s)
PI parameter has similar definition.
PR (180s) (15s)
The calibrator has predefined the time sequences both for DAR and parameters simulate these parameters.r. Usetestleads deliveredwith
UUTsforhighertest voltages. s
