4 HVR High resistance source mode
The calibrator basic function High resistance source mode (HVR). Calibrator calculates and displays test current. 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.
Calibrator measures continuously test voltage even when output terminals are OFF.99. the mode any resistance value range
from 1TO can set and connected the output terminals.
User Manual v16 15
.Press the OUTPUT button again disconnect the output terminals.M 000 1500
100.0 the test voltage not measured.1 1000.999 000 000
10. High resistance mode ranges
In HVR mode the calibrator display enables setting only the main resistance value.00 99. Maximum safe test voltage which allowed apply the output terminals.000 9.999 000 000
10. range from 300.0 999.0 000 000
Tab II.r.99 000 000
20. Displayed value
varies depending set main resistance value range 000 V.9 000 000
1.00 99._________________________________________M191 Insulation Tester Calibrator
4.0 499.99 50
100.0 GO.9 000 000
500. Test current value calculated according to
formula Itest Utest where set resistance value and Utest measured test voltage. Sign “n/a“ is
displayed instead reading the display line.0 1000.0 999.o.000 9. Calibrator measures the test voltage when resistance set range from to
300.
- Applied test voltage. Maximum allowed working voltage is
from range 000 depending set resistance.
- Test current. Reading the test
voltage has suppressed zero band +/- VDC.9 250 250
1.
Fig.0 299. Green LED goes off and the information
field the display shows the following off symbol .
- max.00 19.
During function change, output terminals are always disconnected. HVR mode
Following information are displayed the display:
- Set resistance value O.99 000 000
100. Switching the resistance value under test voltage is
allowed limited voltage range. The internal voltmeter has one range kV. This value test voltage sourced UUT and connected the calibrator
output terminals.9 000 000
300.
MEATEST, s.00 99
