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Les langues disponibles
Les langues disponibles
DMX
3
17.1 Shunt trip (ST)
Allows to open the breaker with an electrical signal .
According to the features of the device, it's always
possible to open the breaker (when closed) . The shunt
trip can work (depending on type) both on AC and
DC current .
This device can work with an instantaneous supply, but
works also with a continuous one .
2° ST
1° ST
if necessary
If always supplied, the device is like an electrical lock
in open position .
Some applications need an high safety on the open
command, and , particularly, the duplication of the
command circuit by a double shunt trip . In that cases
the second shunt trip can be placed instead of the
UVR device .
UVR
ST
D1
C1
-
-
2
D2
C2
2° ST
1° ST
CC
C3
-
C4
-
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