ABB ADVAC - Page 15

15
ABB
Char
g
in
g
Motor
Closin
g
S
p
rin
g
O
p
enin
g
S
p
rin
g
Contact S
p
rin
g
Closin
g
Coil
O
p
en Coil
Circuit Breaker
Char
g
ed
Dischar
g
ed
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Char
g
ed
Dischar
g
ed
Char
g
ed
Dischar
g
ed
Control volta
g
e available to char
g
in
g
motor 33LSb
Main S
p
rin
g
Char
g
ed 33LSb "o
p
en"
Close Si
g
nal
Start of Closin
g
O
p
eration
Close o
p
eration com
p
lete
Main s
p
rin
g
dischar
g
ed 33LSb "closed"
O
p
enin
g
s
p
rin
g
s char
g
ed
Com
p
ression S
p
rin
g
s char
g
ed
Main S
p
rin
g
Char
g
ed 33LSb "o
p
en"
Start of O
p
enin
g
O
p
eration
Open operation complete
Opening springs discharged
Compression Springs discharged
Closin
g
Time
O
p
enin
g
Time
Figure 3: Sequence of Operation
(not to scale)
MECHANISM AND OPERATION
K
-
>
i
K
-
i
Courtesy of NationalSwitchgear.com