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1MRS 750616-MUM
Directional or Non-Directional Earth-Fault Relay
Technical Reference Manual
REJ 527
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The REJ 527 will use the SPA bus protocol as default when the rear connection is in
use. The IEC_103 protocol can be selected through the HMI of the relay. The
selection is memorized and will therefore always be activated when the rear
connection is in use. The use of the IEC_103 protocol in the REJ 527 requires a baud
rate of 9.6 kbps. When the IEC_103 protocol has been selected, event masks are not
in use. Therefore, all events in the configuration set are included in the event
reporting.
The REJ 527 is provided with three different selectable configuration sets, of which
configuration set 1 is used by default. Configuration set 1 provides full compatibility
according to the IEC_103 standard and can be used when the earth-fault unit has
been configured to be non-directional (SGF2/7=0, SGF3/1=1 and SGF3/3=1).
Configuration sets 2 and 3 provide all applicable information of the protection
equipment. However, some information elements have been mapped to a private
range. Configuration set 2 can be used when the earth-fault unit operates as a
two-stage earth-fault current unit with a voltage deblocking facility (SGF2/7=0).
Low-set stage I
0
> and high-set stage I
0
>> can be configured to be either directional
or non-directional (SGF3/1 and SGF3/3). Configuration set 3 can be used when the
unit comprises a three-stage zero-sequence voltage unit (SGF2/7=1). Configuration
set 255 is reserved for future use.
The tables below indicate the information mapping of the corresponding
configuration sets. The column GI indicates whether the status of the specified
information object is transmitted within the general interrogation cycle. The relative
time in messages with the type identification 2 is calculated as a time difference
between the occurred event and the event specified in the column Relative time. The
ABB
REJ 525
Order
No: REJ525A 412-BAA
Software No: 1MRS118011
Serial
No: ER 000001
Uaux = 110-240 Vac
Uaux = 48-220 Vdc
fn
= 50/60 Hz
In = 0.2/1 A (Io)
In = 1/5 A (I)
C
E
START
READY
TRIP
Relay
RER 103
light off
RER 125
IEC_103 star-coupler
light on
Master
system
IEC_103Comm
Содержание REJ 527
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