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