Schweitzer Engineering Laboratories, Inc. SEL-487E Data Sheet
9
You can also apply the SEL-487E to an autotransformer
with both HV and LV busbars installed in a breaker-and-
a-half configuration. In the SV version of the application
shown in Figure 9, the SEL-487E-5 SV Subscriber Relay
subscribes to a total of five IEC 61850 9-2 SV streams
from three different merging units. The SV publishers
and subscriber for this application are connected through
a process bus network switch. The same network switch
communicates GOOSE messaging and time-synchro-
nizes the system by using a PTP time source.
Figure 8 Wye-Delta Transformer With Grounding Bank (TiDL)
Substation Yard
Control House
qq
(REF) (REF)
52 52
ST
3
1
3
1
q DC connections for breaker
status and control.
TiDL Relay
#1
#2
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