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7.
Connection
7.1
Connection DRC SD 1 1 – Part No. 910 920
Measurement inputs
L1, L2, L3 and N are connected with cables or a suitable busbar.
Power supply
The device is supplied via the measuring input L1 and N and can
bridge supply interruptions of up to 5 s. In the event of longer
interruptions, the data is recorded with reduced accuracy.
Power supply U
: 230 V
(50 Hz), max. 30 mA
B
AC
Digital inputs and outputs
The status of an SPD, for example, can also be monitored via an
input. An event can be signaled via an output channel (LED, digital
output, e-mail).
Auxiliary voltage
The auxiliary voltage (Ue+, Ue-) is used to operate the potential-
free digital inputs.
Cross-sectional area: L1/L2/L3/N: 1.5 - 6 mm
Cross-sectional area connector: 0.25 - 1.5 mm
Example wiring of an SPD with remote signalling contact:
· Connect SPD-contact (terminal 11) with
· Feedback from SPD contact (terminal 12 or 14)
· Connection ground (I/O connector terminal 4 and 6)
Configuration via the DRC web server:
2
2
The digital input is assigned to an output channel.
If the contact of the SPD opens, e.g. information is sent by e-mail,
an LED is switched or a digital output is activated.
L1
L2
L3
N/PEN
11 14 12
auxiliary voltage 12 V
(I/O connector terminal 3)
DC
to digital input I1.1 (I/O connector terminal 5)
Page 24 from 69
5 6
4 3
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