Making Measurements With The Benning Cc; Direct Current Measurement; Alternating Current Measurement - Benning CC 3 Instrucciones De Servicio

Measurement
range
40 A
300 A
*
The measuring accuracy is specified for a sinusoidal curve. The stated pre-
cision is specified for conductors that are centrally clamped by the measur-
ing pliers  (see Fig. 2). For conductors that are not centrally clamped, an
additional error of 1 % of the display value needs to be taken into account.
Load impedance:
8.

Making measurements with the BENNING CC 3

8.1 Preparations for making measurements
Operate and store the BENNING CC 3 only at the specified storage and operat-
ing temperatures. Avoid continuous insulation.
- The nominal voltage and current ratings of the safety measuring leads
included in the scope of delivery correspond to the ratings of the
BENNING CC 3.
The safety measuring lead is securely connected to the BENNING CC 3
and cannot be removed.
- Check the insulation of the safety measuring leads. Discard the
BENNING CC 3 immediately if the insulation is damaged.
- Do not clamp the measuring pliers on a live conductor before the
BENNING CC 3 has not been connected to a multimeter.
- Strong sources of interference in the vicinity of the BENNING CC 3 can lead
to unstable readings and measuring errors.
- Do not apply any voltage to the output contacts of the BENNING CC 3.

Do not exceed the maximum permitted voltage with respect to
earth potential! Electrical danger!
The highest voltage, that may be applied to the BENNING CC 3 against ground
potential, is 600 V.

8.2 Direct current measurement

- Select the measuring range (40 A or 300 A) by means of the sliding switch  .
- Set the multimeter to the function "direct voltage measurement" (V DC)
and select a measurement range that can display voltages from 1 mV to
400 mV.
- Contact the 4 mm safety connector of the spiral type safety measuring lead
with the COM jack of the multimeter.
- Contact the red 4 mm safety connector of the spiral type safety measuring
lead with the voltage input jack (V) of the multimeter.
- Press and hold the „ZERO" key (null balance key)  until a measured value
of approximately 0 V is displayed on the multimeter. For this purpose, close
the measuring clamp  and remove it from the live conductor (external
field).
- Opening lever  operate and use measuring clamp  to clamp the single
wire live conductor.
- Read off the voltage value on the multimeter and convert to the current
value taking into account the conversion factor.
40 A measuring range:
300 A measuring range: 1 mV/ A
(see housing with label field 8 )
Example:
Measuring range: 300 A
Voltage value indicated on multimeter: 0.250 V DC = 250 mV DC, corre-
sponds to a measured current value of 250 A DC.
See figure 2:

8.3 Alternating current measurement

- Select the measuring range (40 A or 300 A) by means of the sliding switch  .
- Set the multimeter to the function "alternating voltage measurement" (V AC)
and select a measurement range that can display voltages from 1 mV to
400 mV.
- Contact the 4 mm safety connector of the spiral type safety measuring lead
with the COM jack of the multimeter.
- Contact the red 4 mm safety connector of the spiral type safety measuring
lead with the voltage input jack (V) of the multimeter.
08/ 2011
Measured value
0 . . . 40 A
40 . . . 200 A
200 . . . 300 A
min. 10 MΩ (input resistance of the multimeter)
10 mV/ A
AC/ DC current measurement
BENNING CC 3
Output
0 . . . 400 mV
40 . . . 200 mV
200 . . . 300 mV
Measurement precision*
within the frequency range
40 Hz - 400 Hz
± (1.0 % + 0.2 A)
± (1.0 % + 1 A)
± (1.9 % + 2 A)

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