Manual Benning MM 1.2 (page 24 of 169) (English, German, Dutch, Danish, French, Italian, Polish, Swedish, Turkish, Spanish)

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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 – rst 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specications

Note: The measuring accuracy is specied 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

range

Resolution Measuring accuracy

Overload

protection

200 mV 100 µV ± (0.5 % of the measured value + 2 digits) 1000 V

2 V 1 mV ± (0.5 % of the measured value + 2 digits) 1000 V

20 V 10 mV ± (0.5 % of the measured value + 2 digits) 1000 V

200 V 100 mV ± (0.5 % of the measured value + 2 digits) 1000 V

1000 V 1 V ± (0.5 % of the measured value + 2 digits) 1000 V

7.2 AC voltage ranges

The input resistance is 10 MΩ in parallel 100 pF.

Measuring

range

Resolution

Measuring accuracy *

within the

frequency range 50 Hz - 300 Hz

Overload

protection

200 mV 100 µV ± (2.0 % of the measured value + 5 digits) *

750 V

eff

2 V 1 mV ± (1.5 % of the measured value + 5 digits) 750 V

eff

frequency range 50 Hz - 500 Hz

20 V 10 mV ± (1.5 % of the measured value + 5 digits) 750 V

eff

200 V 100 mV ± (1.5 % of the measured value + 5 digits) 750 V

eff

750 V 1 V ± (1.5 % of the measured value + 5 digits) 750 V

eff

The measured value of the BENNING MM 1-1/ 1-2/ 1-3 is obtained by mean

value rectication and is displayed as r.m.s. value.

The measuring accuracy is specied for a sinusoidal curve. In case of non-

sinusoidal curves, the accuracy of the displayed value decreases. Thus, an

additional error results for the following crest factors:

Crest factor from 1.4 to 3.0 additional error ± 1.5 %

Crest factor from 3.0 to 4.0 additional error ± 3 %

Applies to sinusoidal curves of 50 Hz/ 60 Hz

For automatic range selection (AUTO), the change-over point might be al-

ready at a value of 1400!

09/ 2013

BENNING MM 1-1/ 1-2/ 1-3

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Benning MM 1.2 Manual

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