◦ The master module »Prot« then issues a General Trip, this is the signal »Prot .◦
Trip«.
If the protection stage is phase-selective then also the respective signals »Trip
IL1«, »Trip IL2«, »Trip IL3« are issued and (internally) reported to the master
module »Prot«.
◦
In this case the master module »Prot« also issues the respective phase-
◦
selective »Prot . Trip IL1«, »Prot . Trip IL2«, »Prot . Trip IL3«.
◦ Finally the master module »Prot« generates a trip command, the signal◦
is »Prot . TripCmd«.
Along with a trip command, a sequence of trip impulses is generated, that are
output as voltage pulses at the trip terminal of the WIC1. With correct wiring,
these pulses trigger the circuit breaker to be opened.
If a DiggiMEC is connected, a pop-up window is sent onto the display in order
to draw the user's attention to the fault. (See ╚═▷ “5.1 Fault Display screen
(Overlay / Pop-up) on the DiggiMEC”.) This might be helpful for fast fault
analysis.
NOTICE!
After the circuit breaker has tripped, a CT-powered WIC1 variant is switched o, because
it is obviously no longer supplied via any CT current. The fault event, however, is
recorded in a non-volatile memory and can be read (after the next WIC1 startup). See
also ╚═▷ “5 Fault Recorder”.
122 WIC1 WIC1-1.0-EN-MAN
4 Protective Elements
4.1 »Prot« – General Protection Module
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