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Calibrator can measure
time interval for what the UUT test voltage presented the calibrator output terminals. Test current not displayed when set
resistance higher than 300. Decrease test voltagebefore continue. Green LED starts light.r.0 GQ. Select resistance range UUTif necessary.
Be aware that the test voltage for high resistance
measurements dangerous and can cause
electric shock!
M191 Insulation Tester Calibrator________________________________________ MEATEST, s.
G. M191 calibrator measures the test voltage and display both test voltage and current. Use test leads delivered with UUT whenever possible.
J. During the
measurement the calibrator goes automatically through sequence statues: OFF, STANDBY, RUNNING, OFF.
16 User Manual
. Insteadofthis “Err1 Toohigh
test voltage! ”isdisplayed. Activate UUT measurement, typically pushing button the UUT. The value
cannot modified.
Change the resistance value allowedonly when attached test voltage lower than Voin TableII. the test voltage is
higher than the limits TableII, calibrator does not execute the ONcommand.
Notes:
Testleads deliveredwiththe calibratorareapprovedforapplication upto5kVDC.
B.
- Accuracy. Confirm the value by
pushing the appropriate unit button kQ, MQ, TQ.
Operating procedure
A.
M191 starts measure test voltage and current. Switch the UUT output OFF remove test voltage from its output.Test current displayed only when output terminals are ON.
In Timer function calibrator automatically connects the output terminals resistance value 100 MO.5 TIMER Timer function
Timer function allows verify Timer features safety testers and megaohmmeters. Use only test leads with guaranteed isolation according test voltage
range UUT.
D.
E. Switch
offthetest voltagefirstordecreaseits valuetolevellowerthanshown inthetableII.
Before the output terminals are switched ONstate, calibrator measures test voltage. Select requested test voltage level UUT.
Don't changesetresistance value when test voltageabove Vois connectedtotheoutputterminals, see tableII. Calibrator displays accuracy selected resistance point %. Compare UUT reading M191 set resistance.
I. Select HVR mode pushing repeatedly FUNCTION FUNCTION DOWN button until HVRlabel
appears the display. Enter requested resistance value using either numerical keyboard rotary button.
C.
F. Usetestleads deliveredwith
UUTsforhighertest voltages. Connect output terminals the M191 pushing the button OUTPUT ON.o.
4. the test
voltageis over Voandattempt change theresistance isregistered, calibrator doesnot disconnect theoutput
terminals andshows errormessage “Err2 Set voltage bellow !”. Connect UUT the output terminals. UUT starts source test
voltage.
H. Disconnect M191 output terminals using the button OUTPUT ON. Setupresistance not changed
