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