Electrical Specifications - Benning ST 720 Bedienungsanleitung

IP 40 means: Protection against access to dangerous parts and protection against solid impu-
rities of a diameter > 1 mm, (4 - first index). No protection against water, (0 - second index).
- EMC: EN 61326-1
- Operating temperature and relative humidity:
For operating temperature from 0 °C to 30 °C: relative humidity less than 80 %
For operating temperatures from 31 °C to 40 °C: relative humidity less than 75 %
- Storage temperature: The BENNING ST 720 can be stored at any temperature in the range
from - 25 °C to + 65 °C (relative humidity from 0 to 80 %). The battery should be taken out of
the instrument for storage.
7.

Electrical specifications

Note: The measuring precision is specified as the sum of
- a relative fraction of the measured value and
- a number of digits (counting steps of the least significant digit).
This specified measuring precision is valid for temperatures in the range from 18 °C to 28 °C and
relative humidity less than 80 %.
7.1 Protective conductor resistance
Measuring range
0.05 Ω - 19.99 Ω
Testing current:
open-circuit voltage:
Preset limiting value:
7.2 Insulating resistance
Measuring range
0.1 MΩ - 19.99 MΩ
Testing voltage:
Testing current:
Preset limiting value:
7.3 Protective conductor current and contact current by means of alternative leakage
current measurement method
Measuring range
0.25 mA - 19.99 mA
Testing voltage:
Testing current:
Preset limiting value:
7.4 Protective conductor current (differential current measurement method)
Measuring range
0.25 mA - 19.99 mA
Nominal voltage:
Rated current:
Max. breaking capacity:
Max. lamp load:
Max. measuring duration:
Preset limiting value:
Resistance to external
voltages:
For non-sinusoidal current supply, an additional error has to be considered:
crest factor of > 1.4 to 2.0, additional error + 0.4 %
External magnetic fields might influence the measuring result additionally.
08/ 2010
Resolution
0.01 Ω
Resolution
0.01 MΩ
250 V / 500 V
DC
> 1 mA, < 2 mA at 2 kΩ
1 MΩ (protection class I), 2 MΩ (protection class II)
Resolution
0.01 mA
3.5 mA (protection class I), 0.5 mA (protection class II)
Resolution
0.01 mA
230 V ± 10 % (as mains feed-in)
3.5 mA (protection class I)
BENNING ST 720
Measuring accuracy
5 % ± 2 Digit
> 200 mA (2 Ω)
4 V - 9 V
0.3 Ω
Measuring accuracy
5 % ± 2 Digit
, + 20 %, - 0 %
DC
Measuring accuracy
5 % ± 2 Digit
40 V , 50 Hz
AC
< 10 mA at 2 kΩ
Measuring accuracy
5 % ± 2 Digit
16 A
3000 VA
1000 W
30 seconds
max. 276 V
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