Supervision Functions
PRS-7367 239
4.4.1.1 Function Block
The function block of the protection is as below.
U3P
ALM_PTS
I3P
U3L
Block
CB_CLOSE
MCBOPEN
Alm
InsAlm
P3Open
Figure 4.4-1 Function block
4.4.1.2 Signals
Table 4.4-1 Input Signals
The voltage magnitude in all the three phases
The current magnitude in all the three phases
The voltage magnitude in all the three phases
This signal blocks of the function
The closed position of circuit breaker
It is activated when external MCB opens protected
voltage circuit
Table 4.4-2 Output Signals
This is the integrated Alarm signal
This is the integrated instantaneous Alarm signal
The open signal of the three phases
4.4.2 PTS Operation principle
The fuse failure supervision function can be enabled or disabled by setting the corresponding
PTS_Ena parameter values as "1" or "0".
The operation of the fuse failure supervision function can be described with a module diagram. All
the modules in the diagram are explained in the next sections.
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