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Line distance protection REL670
Version 2.2
Line data communication module LDCM
Each module has one optical port, one for each remote end
to which the IED communicates.
Alternative modules are:
Short range LDCM (820 nm multi mode fiber),
Medium range (1310 nm single mode fiber)
and Long range (1550 nm single mode fiber) .
Galvanic RS485 serial communication module
The Galvanic RS485 communication module (RS485) is
used for DNP3.0 and IEC 60870-5-103 communication. The
module has one RS485 communication port. The RS485 is
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.
GPS time synchronization module GTM
This module includes a GPS receiver used for time
synchronization. The GTM has one SMA contact for
connection to an antenna. It also includes an optical PPS
ST-connector output.
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.
High impedance resistor unit
The high impedance resistor unit, with resistors for pick-up
value setting and a voltage dependent resistor, is available
in a single phase unit and a three phase unit. Both are
mounted on a 1/1 19 inch apparatus plate with compression
type terminals.
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Layout and dimensions
M16075-3 v7
Dimensions
SEMOD158664-5 v3
IEC08000163 V3 EN-US
Figure 15. Case with rear cover
M14851-3 v5
SEMOD141113-4 v9
M14875-3 v10
IEC08000165 V3 EN-US
Figure 16. Case with rear cover and 19" rack mounting kit
M16727-3 v2
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1MRK 506 372-BEN Q
IP14539-1 v1
IP14826-1 v1
M15243-4 v7
IEC08000163‐3‐en.vsdx
IEC08000165‐3‐en.vsdx
Hitachi Energy
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