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