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