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