Tripping Current Rcdi - Benning IT 105 Bedienungsanleitung

I∆N nominal fault current (F4):
Press the function key F4 to select the nominal fault current:
Available nominal fault currents (sinusoidal testing current)
½ I∆N
1 I∆N
5 I∆N
- Connect the measuring leads to the BENNING IT 105 as shown in figures 4 or 5 and apply them to the
test object.
- Press the TEST key 4 to start the measurement.
- The measured tripping time is shown on the main display K.
8.6.3 Tripping current RCD
- Select the desired function RCD
- The symbols of the function keys F1 A to F4 D are briefly shown on the digital display 2 . You can
use the function keys F1 to F4 3 to make the following settings:
F1
0° / 180°
0°/ 180° (F1):
0°: Testing current with positive initial polarity
180°: Testing current with negative initial polarity
RCD type (F2):
sinusoidal test current
pulsating test current
selective (delayed) RCD
For testing selective RCDs, measurement starts after a time delay of 30 seconds.
I∆N nominal fault current (F4):
Press the function key F4 to select the nominal fault current:
Nominal fault currents at RCD type AC
- Connect the measuring leads to the BENNING IT 105 as shown in figures 4 or 5 and apply them to the
test object.
- Press the TEST key 4 to start the measurement.
- The measured tripping time is shown on the main display K.
06/ 2018
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10 mA 30 mA
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I
M with the rotary switch 1 .
I
F2
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:
10 mA ► 30 mA
► ►
:
100 mA
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F3
► ►
► 100 mA ► 300mA
BENNING IT 105
300 mA
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–
► 500 mA

500 mA
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F4
I∆N
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