Date Code 20170927 Instruction Manual SEL-751 Relay
Appendix G
IEC 60870-5-103 Communications
Inst ruction Manual
Overview
The SEL-751 Feeder Protection Relay provides the IEC 60870-5-103 inter-
face for direct serial connections to the device.
This section covers the following topics:
➤ Introduction to IEC 60870-5-103
➤ IEC 60870-5-103 in the SEL-751
➤ IEC 60870-5-103 Documentation
Introduction to IEC 60870-5-103
The International Electrotechnical Commission (IEC) 60870-5 is a protocol
standard developed by the IEC Technical Committee of teleprotection, tele-
control, and telecommunications for electrical engineering and power system
automation. It defines systems used for supervisory control and data acquisi-
tion (SCADA), including details related to communications between devices.
IEC 60870-5-103 is a companion standard that allows interoperability
between devices in a control system and protection equipment. The IEC
60870-5 standard consists of the documents listed in Table G.1.
The IEC 60870-5-103 document contains the information necessary for
successful implementation of this protocol. SEL strongly recommends that
anyone involved with the design, installation, configuration, or maintenance of
IEC 60870-5-103 systems be familiar with the appropriate sections of this
document.
Ta b l e G .1 IEC 6 0 870 - 5 Stan da rd D o c u m e n t s
Document Description
IEC 60870-5-1 Transmission Frame Formats
IEC 60870-5-2 Data Link Transmission Services
IEC 60870-5-3 General Structure of Application Data
IEC 60870-5-4 Definition and Coding of Information Elements
IEC 60870-5-5 Basic Application Functions
IEC 60870-5-6 Guidelines for Conformance Testing IEC 60870-5 Companion
Standards
IEC 60870-5-7 Security extensions to IEC 60870-5-1010 and IEC 60870-5-104
protocols
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