5 Electric Installation LB 470 Level
56925BA2 Rev. 03, 11/2017
5.6 Electrical connection in the 19″ subrack with clamp
block
Danger to life from electric shock!
The installation may only be carried out by a qualified electrician.
Please adhere to the relevant safety regulations.
Installation/maintenance may only be carried out if the device has been
de-energised.
Only open the device when free of voltage.
In case of an electric shock, carry out first aid measures and immediately call an
emergency service.
If the units are installed in the 19" subrack without terminal board, the electrical
connections are made via clamp blocks. These clamp blocks are already installed in
the 19" subracks and are also available as an optional accessory.
In the case of applications with clamp blocks a contact protection must be pro-
vided by the customer when voltage is applied. The cable connections of
clamp blocks have to be in accordance with IEC 61010-1 (2010).
The connection between the master EVU and slave modules is made with a 4-pin
master/slave plug (see chap. 5.6.1).
The LB 470 is restricted pin-compatible with the terminals of the LB 440. The
pins for the power supply, the probe interface and the current output are at
the same position. If only those ports are used, then a LB 440 can be replaced
by a LB 470 without re-wiring.
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