Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
260
Figure 3-2 Trip circuit supervision with one binary input
This results in an upper limit for the resistance dimension, R
max
, and a lower limit R
min
, from which the optimal
value of the arithmetic mean R should be selected:
In order that the minimum voltage for controlling the binary input is ensured, R
max
is derived as:
So the circuit breaker trip coil does not remain energized in the above case, R
min
is derived as:
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