Woodward High PROTEC MRU4, Руководство пользователя

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Module: Protection (Prot)
General Alarms and General Trips
Each protective element generates it´s own alarm and trip signals. All alarms and trip decision are passed on to the
master module
»Prot«.
If a protective element picks up, respectively has decided about a trip, two signals will be issued:
1. The module or the protection stage issues an alarm e.g. »I[1].A
LARM
« or »I[1].T
RIP
«.
2. The master module »Prot«
collects/summarizes the signals and issues
an alarm or
a trip
signal »P
ROT
.A
LARM
«
»P
ROT
.T
RIP
«.
Further examples: »P
ROT
.A
LARM
L1« is a collective signal (OR-connected) for all alarms issued by any of the
protective elements concerning Phase L1.
»P
ROT
.T
RIP
L1« is a collective signal (OR-connected) for all trips issued by any of the protective elements concerning
Phase L1.
»P
ROT
.
ALARM
« is the collective alarm signal OR-ed from all protection elements.»P
ROT
.T
RIP
« is the collective alarm
signal OR-ed from all protection elements.
The trip commands of a the protective elements have to be assigned within the Circuit Breaker Manager CB
Manager. Only those trip decisions that are assigned within the CB Manager are isssued to the Circuit Breaker.
Caution: Trip commands that are not assigned within the Circuit Breaker
Manager (CB Manager) are not issued to a circuit breaker.
The CB Manager issues the trip commands to a circuit breaker.
Assign within the Circuit Breaker Manager all trip commands that have to
switch a circuit breaker.
336 MRU4 DOK-HB-MRU4-2E