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1MRK 511 451-UEN Rev. C
Section 4
4.1
Introduction
Busbar protection is not one of the types of protection defined in IEC 60870-5-103.
Nevertheless, the commands and signals of the REB500 system are modeled as far as possible
on functions defined in the IEC recommendation. The functional scope of the station protocol
is therefore reduced. The backup protection functions breaker failure, time-overcurrent and
end fault that are optionally available with REB500 are also supported.
According to the IEC recommendation, usage of the private range is only permitted with
regard to the compatibility of existing devices. For this reason, additional REB500 functions
that are not defined in the recommendation were implemented according to the future-
oriented generic part of IEC 60870-5-103.
REB500 also optionally provides a private range.
Refer to IEC 60870-5-103 for an explanation of the various abbreviations.
4.2
General functions
The tables below define the functional scope of REB500 according IEC 60870-5-103. The
details are to be found in the recommendation itself.
Table 5:
INF
<0>
<0>
<2>
<3>
<4>
<5>
Table 6:
INF
<18>
<19>
<20>
Distributed busbar protection REB500
Communication protocol manual IEC 60870-5-103
IEC 60870-5-103
System functions in monitoring direction
Description
End of general interrogation (polling)
Time synchronization
Reset frame control bit (FCB)
Reset CU
Start/restart
Power on
The information number 0 refers to the global function type and is the same for
all system functions. The information numbers 2 to 5 are used with FUN in
relation to the main function of a protection system.
Status signals in monitoring direction
Description
Protection active
LED reset
Blocks the supervisory
equipment
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GI.
GI.
TYPE
COT
REB500 signal configuration
x
1
1,9
41810_In service (CU
output)21805_In service (BU
output)
–
1
11
31810_External reset (CU
input)11610_external reset (BU
input)
x
1
9,11
31215_Block.IEC
master_direction (CU input)
GUID-011906E4-AFE3-4962-825C-7134F3CC9EA5 v1
GUID-B95181CD-4E96-4569-BA0A-5D1EF56CA1D1 v3
TYPE.
COT
–
8
10
–
6
8
–
5
3
–
5
4
–
5
5
–
5
6
Section 4
IEC 60870-5-103
13
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