differences presented in the monitored data view. These values should be within the
permitted tolerances, that is, close to zero.
shows an example where the synchrocheck is used for the circuit breaker
closing between a busbar and a line. The phase-to-phase voltages are measured
from the busbar and also one phase-to-phase voltage from the line is measured.
Figure 323: Connection of voltages for the protection relay and signals used in
synchrocheck
9.3.6
Signals
9.3.6.1
SECRSYN Input signals
Table 674: SECRSYN Input signals
Name
Type
Default
Description
U_BUS
SIGNAL
0
Busbar voltage
U_LINE
SIGNAL
0
Line voltage
CL_COMMAND
BOOLEAN
0=False
External closing re-
quest
BYPASS
BOOLEAN
0=False
Request to bypass
synchronism check
and voltage check
BLOCK
BOOLEAN
0=False
Blocking signal of the
synchro check and
voltage check func-
tion
Control functions
1MRS758755 C
652
REC615 & RER615
Technical Manual
Содержание Relion REC615
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