Doc ID : ADR111A_IM_01
Ref ID : ADR111A/IM/I&P
Rev No. : 04
Page No. : 36 of 127
ADR111A /
ADR211A
more than two rings per terminal. The product is supplied with sufficient M4 screws for
proper connection.
M4 Terminal block for CT connection, Auxiliary Supply, Output connection
Figure 6: Terminal blocks
Caution: Always fit an insulating sleeve over the ring terminal.
2.3.8 Rear Serial Port connection (For ADR211A only)
The rear serial port is intended for use with a permanently wired connection to a remote
SCADA system. The physical connectivity is achieved using four terminals A5-A6-A7-A8 for
signal connection shown below.
For connecting the RS422, use screened cable with a maximum total length of 1000 m or
200 nF total cable capacitance.
A typical cable specification would be:
Each core: 16/0.2 mm2 copper conductors, PVC insulated
Nominal conductor area: 0.5 mm2 per core
Screen: Overall braid, PVC sheathed
There is no electrical connection of the cable screen to the device. The link is provided
purely to link together the two cable screens.
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