Megger BM121 Gebrauchsanleitung Seite 3

Terminal Characteristics
Accuracy (at 20°C):
Temperature Coefficient:
Temperature Range:
Operating:
Storage:
Humidity:
Display:
Auto Shut off:
Default Voltage Wa r n i n g :
The circuit under test must be switched off, de-energised and isolated before
making any tests. If an external voltage >25V (ac or dc) is detected, normal
testing is inhibited and the display flashes a 'V' warning. Caution: This
warning does not function if the instrument is 'Off' or if the battery is
exhausted.
Automatic Discharge:
Capacitive circuits will be automatically discharged when the test button is
released following an insulation test (Internal 360 kΩ resistance).
Power Supply:
Battery life:
N o t e :
Low Battery:
Battery Replacement: The rear cover must not be opened if the test leads
are connected. To remove the rear cover, release the screw at the bottom of
the cover and lift the cover upwards. To avoid the possibility of shock, do not
press the test button or touch the fuse when changing battery cells.
Fuse:
To check this fuse, open circuit the test leads and press the test button until
a reading is obtained. Display of the fuse symbol
indicates a ruptured fuse. Located under the rear cover, this fuse can be
replaced by the user. The rear cover must not be opened if the test leads
are connected. The replacement fuse must be of the correct type and rating.
To avoid the possibility of shock, disconnect the battery before touching the
fuse.
0,01Ω - 9,99Ω ± 3% ±2 digits(I
10Ω - 99,9Ω ± 5% ± 2 digits (I
<0,1% per °C
-0°C to +40°C (full measurement range)
-20°C to +60°C (to 100 M Ω maximum)
-25°C to +65°C
90% RH at 40°C max
3 digit L.C.D. Maximum reading 999
Auto shut off operates after 5 minutes of
inactivity by the instrument.
6 x 1,5V cells IECLR6 (AA) type only.
Typically 2000, 5 second operations (worst case).
Battery cells should not be left in an instrument which
may remain unused for extended periods of time.
The low battery indicator symbol
when the battery cells are exhausted.
500 mA(F) H.B.C.10 kAmin (32mm x 6mm).
Limiting Value Curve
=210mA)
SC
=21mA)
SC
will appear
, or an error code