26 GMC-I Messtechnik GmbH
Electromagnetic Compatibility (EMC)
Interference emission EN 61326-1:2006 class B
Interference immunity EN 61326-1:2006
Ambient Conditions
Accuracy
temperature range 0 ... +40 °C
Operating temperature –10 ... +50 °C
Storage temp. range –25 ... +70 °C (without batteries)
Relative humidity Up to 75%
(max. 85% during storage/transport),
no condensation allowed
Elevation Max. 2000 m
Calibration interval 1 year (recommended)
Mechanical Design
Dimensions 225 x 130 x 140 mm
Weight Approx. 1.4 kg with batteries
Protection Housing: IP 52, measurement cables and
connectors: IP 40 per DIN VDE 0470,
part 1 / EN 60529,
housing category 2
Extract from table on the meaning of IP codes
Displays
Digital display With additional bar graph or pointer
depending on selection with a.disp
parameter, backlit (transflective);
leading zeros can be suppressed at the
digital display depending on 0.disp
parameter;
overranging indicated with 0L at display;
dimensions: 65 x 36 mm
Limit LED LED lights up red to indicate an exceeded
limit value
LED lights up green to indicate adherence
to the limit value
LED LED lights up red to indicate:
– the presence of an external voltage
bevore insulation testing
(U > 50 V)
with the device switched on or off
(device switched off not with M550N)
– the presence of the test/measuring voltage
during (insulation) measurement (U > 50 V)
the presence of a residual voltage
after insulation testing (U > 50 V)
with the device switched on or off
at LCD Detection of external voltage at the LCD
with the device switched on where U DC >
50 V and U AC > 40 V (50 Hz) for all mea-
suring functions
IP XY
(1
st
digit X)
Protection Against
Foreign Object Entry
IP XY
(2
nd
digit Y)
Protection Against
Penetration by Water
2 ≥ 12.5 mm dia. 2 Dripping (at 15° angle)
3 ≥ 2.5 mm dia. 3 Spraying water
4 ≥ 1.0 mm dia. 4 Splashing water
5 Dust protected 5 Jet-water
6 Dust-proof 6 Powerful water jets
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