Thytronic NA11 User Manual

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72
NA11 - Manual - 02 - 2009
FUNCTION CHARACTERISTICS
Rapid reclosing
Successful rapid reclosure; no faults (CB opening command) occurs within the reclaim time.
After the reclaim time the system comes back to reset; any new trip starts a rapid reclosing se-
quence again.
Unsuccessful rapid reclosure; new fault (CB opening command) occurs within the reclaim time.
The automatic reclosing system is blocked and a failed reclosure command is issued.
After the reclaim time, following a closed CB condition without any faults, the system comes back
to reset.
Rapid reclosing and slow
reclosing
Successful rapid + slow reclosure; a fault (CB opening command) occurs within the reclaim time.
After the slow reclosure dead time (t
sdt
) a slow reclosure is operated.
Because no trip occurs within the reclaim time the system comes back to reset; any new trip starts
a rapid + slow reclosing sequence again.
CB CLOSED CB OPEN CB CLOSED
79 diafram ai
t
rdt
CB State
Timer di neutralizzazione
t
t
r
Richiusura rapida operata con successo
CB CLOSED CB OPEN CB CLOSED
79 diafram ai
t
rdt
CB State
Timer di neutralizzazione
t
t
r
Richiusura rapida operata con successo
CB CLOSED CB OPEN
CB OPEN
CB CLOSED
t
rdt
CB State
t
CB CLOSED
Timer di neutralizzazione
Fallita richiusura
t
r
t
r
CB CLOSED CB OPEN
CB OPEN
CB CLOSED
t
rdt
CB State
t
CB CLOSED
Timer di neutralizzazione
Fallita richiusura
t
r
t
r
CB CLOSED
CB CLOSED CB OPEN
CB OPEN
CB CLOSED
79RL-diafram.ai
t
rdt
CB State
t
t
sdt
Richiusura rapida seguita da guasto e successiva richiusura lenta operata con successo
Timer di neutralizzazione
t
r
t
r
t
d1
CB CLOSED
CB CLOSED CB OPEN
CB OPEN
CB CLOSED
79RL-diafram.ai
t
rdt
CB State
t
t
sdt
Richiusura rapida seguita da guasto e successiva richiusura lenta operata con successo
Timer di neutralizzazione
t
r
t
r
t
d1

Thytronic NA11 Specifications

General

Brand	Thytronic
Model	NA11
Category	Relays
Language	English