range from 300.9 000 000
300. Reading the test
voltage has suppressed zero band +/- VDC.99 000 000
20.
User Manual v16 15
.0 000 000
Tab II.0 499.
- max.99 000 000
100. Green LED goes off and the information
field the display shows the following off symbol ._________________________________________M191 Insulation Tester Calibrator
4.4 HVR High resistance source mode
The calibrator basic function High resistance source mode (HVR).999 000 000
10. Maximum allowed working voltage is
from range 000 depending set resistance.00 99.r.0 999.0 299.9 000 000
1. Test current value calculated according to
formula Itest Utest where set resistance value and Utest measured test voltage.1 1000.0 GO.M 000 1500
100. Maximum safe test voltage which allowed apply the output terminals.00 99.00 99.0 the test voltage not measured. Calibrator measures the test voltage when resistance set range from to
300. Sign “n/a“ is
displayed instead reading the display line.
- Applied test voltage. The resistance partial ranges, absolute voltage limits and maximum applicable
test voltage when the resistance switched over are shown the table:
Resistance range (fi) Vmax Absolute test voltage
(V)
Vo Maximum test voltage for
overswitching (V)
10.0 1000.9 250 250
1.0 999.
- Test current. The internal voltmeter has one range kV. Calibrator calculates and displays test current. High resistance mode ranges
In HVR mode the calibrator display enables setting only the main resistance value.
MEATEST, s.00 19.o. This value test voltage sourced UUT and connected the calibrator
output terminals.000 9.000 9.Press the OUTPUT button again disconnect the output terminals.999 000 000
10.
Calibrator measures continuously test voltage even when output terminals are OFF.9 000 000
500. Displayed value
varies depending set main resistance value range 000 V. the mode any resistance value range
from 1TO can set and connected the output terminals.
Fig.
During function change, output terminals are always disconnected.99 50
100. Switching the resistance value under test voltage is
allowed limited voltage range.99. HVR mode
Following information are displayed the display:
- Set resistance value O
