Effective May 2010
2C15997H02
05/10 AWA1230-2453
IZM cassette cell
switch field option kit
warning
(1) Only qualified electrical persOnnel shOuld
be permitted tO wOrk On the equipment.
(2) always de-energize primary and
secOndary circuits if a circuit breaker
cannOt be remOved tO a safe wOrk lOcatiOn.
(3) drawOut circuit breakers shOuld be
levered (racked) Out tO the discOnnect
pOsitiOn.
(4) all circuit breakers shOuld be switched
tO the Off pOsitiOn and mechanism springs
discharged.
failure tO fOllOw these steps fOr all
prOcedures described in this instructiOn
leaflet cOuld result in death, bOdily injury,
Or prOperty damage.
warning
the instructiOns cOntained in this awa and On
prOduct labels have tO be fOllOwed. Observe
the five safety rules:
– discOnnecting
– ensure that devices cannOt be
accidentally restarted
– verify isOlatiOn frOm the supply
– earthing and shOrt-circuiting
– cOvering Or prOviding barriers tO
adjacent live parts
discOnnect the equipment frOm the supply.
use Only authOrized spare parts in the repair
Of the equipment. the specified maintenance
intervals as well as the instructiOns fOr
repair and exchange must be strictly adhered
tO prevent injury tO persOnnel and damage tO
the switchbOard.
Section 1: General information
Each cell switch assembly consists of four SPDT
switches operated by a common actuator. The
wiring diagram in
Figure 1
illustrates the switch
contacts in the normal (unactuated) position with
the breaker fully withdrawn. As the breaker is
levered into the cassette, the switches change
state. Switch packs can be placed in one or more
of the three positions shown (
D
,
T
, or
C
), and are
activated progressively as the breaker reaches the
insertion position shown in
Figure 1
.
Figure 1. Cell Switch Wiring Diagram
NC
C
NO
NC
C
NO
NC
C
NO
NC
C
NO
D
NC
NO
T
NC
NO
C
NC
NO
10
11
12
Withdrawn
Auxiliary
Contacts
Connected
Test
Primary
Contacts
Connected
Connected
a
Closed
b
Open
a
a
b
b
a
a
b
b
a
b
a
b
