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