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