Ambient Conditions; Electrical Specifications - Benning MM 1-1 Instrucciones De Servicio

5.1.12 If the battery voltage falls below the specified operating voltage of the BEN-
NING MM 1-1/ 1-2/ 1-3, a battery symbol  appears on the display .
5.1.13 The battery life is approx. 250 hours (alkaline battery).
5.1.14 Dimensions of the device:
(L x W x H) = 156 x 74 x 44 mm with suspension fixture
Weight: 320 g with suspension fixture and battery
5.1.15 The enclosed safety measuring leads are explicitly intended for the nom-
inal voltage and the nominal curent of the BENNING MM 1-1/ 1-2/ 1-3.
5.1.16 The BENNING MM 1-1/ 1-2/ 1-3 can be set up by means of a foldable
support or can be attached by means of the suspension fixture.
5.1.17 The BENNING MM 1-1/ 1-2/ 1-3 is equipped with a detector as voltage
indicator at its top side to localize earthed AC voltages.
6.

Ambient conditions

- The BENNING MM 1-1/ 1-2/ 1-3 is intended for measurements under dry
ambient conditions,
- Maximum barometric height for measurements: 2000 m,
- Overvoltage category / installation category: IEC 60664-1/ IEC 61010-1 →
600 V category III; 1000 V category II,
- Contamination class: 2,
- Protection category: IP 30 DIN VDE 0470-1 IEC/EN 60529
IP 30 means: Protection against access to dangerous parts and protection
against solid impurities of a diameter > 2.5 mm, (3 – first index).
No protection against water, (0 – second index).
- Operating temperature and relative air humidity:
For operating temperatures from 0 °C to 30 °C: relative air humidity less
than 80 %,
For operating temperatures from 31 °C to 40 °C: relative air humidity less
than 75 %,
For operating temperatures from 41 °C to 50 °C: relative air humidity less
than 45 %,
- Storage temperature: The BENNING MM 1-1/ 1-2/ 1-3 can be stored at
temperatures between - 15 °C and + 60 °C (air humidity of 0 to 80 %).
During storage, the battery should be removed.
7. Electrical specifications
Note: The measuring accuracy is specified as the sum of:
- a relative part of the measured value and
- a number of digits (i.e. counting steps of the last digit).
This measuring accuracy applies for temperatures from 18 °C to 28 °C and a
relative air humidity less than 80 %.
7.1 DC voltage ranges
The input resistance is 10 MΩ.
Measuring
Resolution
range
*3
200 mV
2 V
20 V
200 V
1000 V
7.2 AC voltage ranges
The input resistance is 10 MΩ in parallel 100 pF.
Measuring
Resolution
range
*3
200 mV 100 µV
2 V 1 mV
20 V 10 mV
200 V 100 mV
750 V
The measured value of the BENNING MM 1-1/ 1-2/ 1-3 is obtained by mean
value rectification and is displayed as r.m.s. value.
The measuring accuracy is specified for a sinusoidal curve. In case of non-
*1
sinusoidal curves, the accuracy of the displayed value decreases. Thus, an
03/ 2019
100 µV ± (0.5 % of the measured value + 2 digits)
1 mV ± (0.5 % of the measured value + 2 digits)
10 mV ± (0.5 % of the measured value + 2 digits)
100 mV ± (0.5 % of the measured value + 2 digits)
1 V ± (0.5 % of the measured value + 2 digits)
Measuring accuracy *
frequency range 50 Hz - 300 Hz
± (2.0 % of the measured value + 5 digits) *
± (1.5 % of the measured value + 5 digits)
frequency range 50 Hz - 500 Hz
± (1.5 % of the measured value + 5 digits)
± (1.5 % of the measured value + 5 digits)
1 V ± (1.5 % of the measured value + 5 digits)
BENNING MM 1-1/ 1-2/ 1-3
Measuring accuracy
1 within the

Overload
protection
1000 V
DC
1000 V
DC
1000 V
DC
1000 V
DC
1000 V
DC
Overload
protection
2 750 V
eff
750 V
eff
750 V
eff
750 V
eff
750 V
eff
15