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