FULLTEST
3
EN - 21
5.3. INSULATION RESISTANCE (M
)
• According to EN 60204-1, the insulation resistance between shorted active conductors of power
circuit and the earth bonding system must be checked by applying a test voltage of 500 V DC. The
limit value is 1 M
.
• Ensure that all switches on the unit under test are closed in order to test all it’s components. For
purpose of the measurement, all active conductors (L1, L2, L3 and N) must be shortcircuited.
5.3.1. R
ISO
DISPLAY EXPLANATION
Adjustable/selectable parameters:
Utest -
nominal test voltage
100, 250, 500 or 1000 V DC
MODE - operation mode
MANUAL, TIMER or AUTO
LIMIT - insulation resistance limit
0.01
100.0 M
TIMER – measurement time
00:05
10:00, res. 1 s
Figure 11: Display with R
ISO
test result
1 ..... Selected function.
2 ..... Progress bar, it follows measurement time during the measurement (in TIMER mode only).
3 ..... Test voltage applied during the measurement.
4 ..... Measurement screen touch-screen key.
5 .....
Utest
touch-screen key to select nominal test voltage (100, 250, 500 or 1000 V). Currently selected
value is displayed on the bottom of the key.
6 .....
MODE
touch-screen key to select operation mode (MANUAL, TIMER or AUTO). Currently selected
mode is displayed on the bottom of the key.
7 .....
LIMIT
touch-screen key to select limit insulation resistance. Currently selected value is displayed
on the bottom of the key.
8 ..... Measurement value (in green colour - result OK, in red colour - result not OK).
9 ..... Real time clock (hh.mm.ss).
10 ... Unit of the measurement result M
).
11 ... Set measurement time (in TIMER mode only).
12 ... Measurement result status (symbol
in green colour - result OK, symbol
in red colour - result
not OK).