5.2.2.3 "TIMER" MODE
GO
At the end of the test, in case the
resistance
value
results to be lower than R
(depending on the selected voltage
see following Table 1) and the test is
effected at the selected rated
voltage value, the instrument emits a
double sound signal indicating the
positive
outcome
displays one screen similar to the
screen alongside.
Rated voltage value selected for the Timer test.
The values of measured resistance of isolation always must be confronted with the
normative limits for being able to assert if the system is to norm.
SAVE
Note The maximum resistance value R
depends on the rated voltage selected for the test. In particular:
Table1:
Table of maximum resistance values which can be measured under MΩ
mode depending on the rated voltage selected.
Press the GO key. The instrument effects the measurement ending
when the set time has elapsed.
999 seconds → Maximum value of the test duration.
10 seconds → Minimum value of the test duration.
Note: Pressing the GO key again the test gets immediately
interrupted.
MΩ
detected
MAX
of
the
test
The test can be stored pressing the SAVE key twice (according to
paragraph 0).
Rated voltage selected
for the test
50VDC
100VDC
250VDC
500VDC
1000VDC
R
ISO
2.07
500 V
20
TIMER
Timer mode.
which can be measured in mode MΩ
MAX
R
= Maximum resistance
MAX
99.9MΩ
199.9MΩ
499MΩ
999MΩ
1999MΩ
18
Insulation
resistance
value R
ISO.
MΩ
s
Duration of the set
test.
value