ABB Relion REL650 Series Product Manual page 39

Line distance protection REL650
Version 2.2
a balanced serial communication that can be used either in
2-wire or 4-wire connections. A 2-wire connection uses the
same signal for RX and TX and is a multidrop
communication with no dedicated Master or slave. This
variant requires however a control of the output. The 4-wire
connection has separated signals for RX and TX multidrop
communication with a dedicated Master and the rest are
slaves. No special control signal is needed in this case.
IRIG-B Time synchronizing module
The IRIG-B time synchronizing module is used for accurate
time synchronizing of the IED from a station clock.
The Pulse Per Second (PPS) input is supported.
Electrical (BNC) and optical connection (ST) for 0XX and
12X IRIG-B support.
Transformer input module TRM
The transformer input module is used to galvanically
separate and adapt the secondary currents and voltages
generated by the measuring transformers. The module has
twelve inputs in different combinations of currents and
voltage inputs.
Ring lug or compression type connectors can be ordered.
Hitachi Power Grids
Layout and dimensions
Dimensions
SEMOD141113-4 v9
M14875-3 v10
IEC08000164 V4 EN-US
Figure 7.
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Case without protective cover
1MRK 506 384-BEN H
IP14539-1 v1
IP14826-1 v1 M2152-3 v8
IEC08000164-4-en.vsdx
39