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