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