User Manual v16 15
.o.
- Applied test voltage._________________________________________M191 Insulation Tester Calibrator
4.4 HVR High resistance source mode
The calibrator basic function High resistance source mode (HVR).00 99. Maximum allowed working voltage is
from range 000 depending set resistance. Displayed value
varies depending set main resistance value range 000 V.9 250 250
1.99 000 000
20.9 000 000
1. 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 GO. the mode any resistance value range
from 1TO can set and connected the output terminals. Switching the resistance value under test voltage is
allowed limited voltage range.00 99.r. range from 300.00 99.999 000 000
10.99.9 000 000
500.0 999.9 000 000
300.000 9.0 000 000
Tab II. Sign “n/a“ is
displayed instead reading the display line.M 000 1500
100. HVR mode
Following information are displayed the display:
- Set resistance value O. Test current value calculated according to
formula Itest Utest where set resistance value and Utest measured test voltage.0 1000. High resistance mode ranges
In HVR mode the calibrator display enables setting only the main resistance value. Calibrator calculates and displays test current.
During function change, output terminals are always disconnected. Calibrator measures the test voltage when resistance set range from to
300.
- Test current.
Fig.
- max. Green LED goes off and the information
field the display shows the following off symbol .000 9. The internal voltmeter has one range kV. Reading the test
voltage has suppressed zero band +/- VDC. This value test voltage sourced UUT and connected the calibrator
output terminals.0 999.
Calibrator measures continuously test voltage even when output terminals are OFF.
MEATEST, s.999 000 000
10.00 19.0 the test voltage not measured.0 299.1 1000.0 499.Press the OUTPUT button again disconnect the output terminals.99 50
100. Maximum safe test voltage which allowed apply the output terminals.99 000 000
100
