ABB RET670 Product Manual page 27

ABB
Transformer protection RET670
Customized
Product version: 1.2
protocol (port A, B). The module has one or two
optical ports with ST connectors.
Serial and LON communication module SLM,
supports SPA/IEC 60870-5-103, LON and DNP 3.0
The serial and LON communication module (SLM)
is used for SPA, IEC 60870-5-103, DNP3 and
LON communication. The module has two optical
communication ports for plastic/plastic, plastic/
glass or glass/glass. One port is used for serial
communication (SPA, IEC 60870-5-103 and
DNP3 port or dedicated IEC 60870-5-103 port
depending on ordered SLM module) and one port
is dedicated for LON communication.
Line data communication module LDCM
Each module has one optical port, one for each
remote end to which the IED communicates.
Alternative cards for Medium range (1310 nm
single mode) and Short range (850 nm multi
mode) are available.
Galvanic RS485 serial communication module
The Galvanic RS485 communication module
(RS485) is used for DNP3.0 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.
1MRK 504 117-BEN D
GPS time synchronization module GTM
This module includes a GPS receiver used for
time synchronization. The GPS 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.
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 transform the secondary
currents and voltages generated by the
measuring transformers. The module has twelve
inputs in different combinations of currents and
voltage inputs.
Alternative connectors of Ring lug or
Compression type 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.
Layout and dimensions
Dimensions
27