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