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