Measuring With The Benning Cflex; Ac Current Measurement; Maintenance; Securing The Instrument - Benning CFlex 2 Bedienungsanleitung

Distance from the middle
8.

Measuring with the BENNING CFlex 2

8.1 Preparing the measurement
Operate and store the BENNING CFlex 2 at the specified storage and operating temperatures
only! Do not permanently expose the device to sunlight.
- Nominal voltage and nominal current of the enclosed safety measuring lead comply with the
respective values of the BENNING CFlex 2. The safety measuring lead is firmly connected
with the BENNING CFlex 2 and is not detachable.
- Check the insulation of the safety measuring lead. If the insulation is damaged, the
BENNING CFlex 2 must be scrapped immediately.
- Strong sources of interference in the vicinity of the BENNING CFlex 2 might involve unsta-
ble readings and measuring errors.
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Do not exceed the maximum permitted voltage with respect to earth potential!
Electrical danger!
The highest voltage that may be applied to the BENNING CFlex 2 with respect to earth potential
is 600 V CAT IV / 1000 V CAT III.

8.2 AC current measurement

- Select the measuring range (30 A, 300 A or 3000 A) by means of the rotary switch  .
- Clamp the single-wire live conductor centrally by means of the flexible measuring loop  .
- Read the measured value from the digital display 7 .
See Figure 2 a:
See Figure 2 b:
9.

Maintenance

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Before opening the BENNING CFlex 2, make sure that it is free of voltage!
Electrical danger!
Work on the opened BENNING CFlex 2 under voltage may be carried out only by skilled elec-
tricians with special precautions for the prevention of accidents.
Make sure that the BENNING CFlex 2 is free of voltage as described below before opening
the instrument:
- First, remove the BENNING CFlex 2 from the object to be measured.
The BENNING CFlex 2 AC current transformer is not equipped with a fuse.

9.1 Securing the instrument

Under certain circumstances safe operation of the BENNING CFlex 2 is no longer ensured, for
example in the case of:
- Visible damage of the casing.
- Incorrect measurement results.
- Recognisable consequences of prolonged storage under improper conditions.
- Recognisable consequences of extraordinary transportation stress.
In such cases, immediately disconnect the BENNING CFlex 2 from the measuring point and
secure it against further use.
9.2 Cleaning
Clean the exterior of the housing with a clean dry cloth (exception: special cleaning wipers). Avoid
using solvents and/ or scouring agents for cleaning the instrument. It is important to make sure
that the battery compartment and battery contacts are not contaminated by leaking electrolyte.
If electrolyte contamination or white deposits occur in the area of the batteries or battery com-
partment, clean them too with a dry cloth.

9.3 Battery replacement


Before opening the BENNING CFlex 2, make sure that it is free of voltage!
Electrical danger!
07/ 2014
25 mm
50 mm
75 mm
Alternating current measurement
Alternating current measurement
BENNING CFlex 2
Positioning error
± (1.0 % of the final measuring range value)
± (2.0 % of the final measuring range value)
± (3.0 % of the final measuring range value)
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