available to any Ethernet based application via
FTP in the standard Comtrade format. Further,
the IED can send and receive binary values,
double point values and measured values (for
example from MMXU functions), together with
their quality, using the IEC 61850-8-1 GOOSE
profile. The IED meets the GOOSE
performance requirements for tripping
applications in substations, as defined by the
IEC 61850 standard. The IED interoperates with
other IEC 61850-compliant IEDs, tools, and
systems and simultaneously reports events to
five different clients on the IEC 61850 station
bus.
The event system has a rate limiter to reduce
CPU load. The event channel has a quota of 10
events/second. If the quota is exceeded the
event channel transmission is blocked until the
event changes is below the quota, no event is
lost.
All communication connectors, except for the
front port connector, are placed on integrated
communication modules. The IED is connected
to Ethernet-based communication systems via
the fibre-optic multimode LC connector
(100BASE-FX).
The IED supports SNTP and IRIG-B time
synchronization methods with a time-stamping
resolution of 1 ms.
• Ethernet based: SNTP and DNP3
• With time synchronization wiring: IRIG-B
The IED supports IEC 60870-5-103 time
synchronization methods with a time stamping
resolution of 5 ms.
Table 1. Supported communication interface
and protocol alternatives
Interfaces/
Protocols
Ethernet
100BASE-FX
LC
ST connector
IEC 61850-8-1
●
DNP3
●
IEC
60870-5-103
●
●
= Supported
Horizontal communication via
GOOSE for interlocking
GOOSE communication can be used for
exchanging information between IEDs via the
IEC 61850-8-1 station communication bus. This
is typically used for sending apparatus position
indications for interlocking or reservation
signals for 1-of-n control. GOOSE can also be
used to exchange any boolean, integer, double
point and analog measured values between
IEDs.
DNP3 protocol
DNP3 (Distributed Network Protocol) is a set of
communications protocols used to
communicate data between components in
process automation systems. For a detailed
description of the DNP3 protocol, see the
DNP3 Communication protocol manual.
IEC 60870-5-103 communication
protocol
IEC 60870-5-103 is an unbalanced (master-
slave) protocol for coded-bit serial
communication exchanging information with a
control system, and with a data transfer rate up
to 38400 bit/s. In IEC terminology, a primary
station is a master and a secondary station is a
slave. The communication is based on a point-to-
point principle. The master must have software
Breaker protection REQ650 ANSI
1MRK 505 269-BUS -
Product version: 1.1
Issued: April 2011
ABB
29
