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