ABB 5VHK 250 - Introduction and Initial Handling; Receiving and Storage Procedures; Circuit Breaker Installation; Vacuum Interrupter Examination

ASS
Page
3
A
8
£
AGft
<
aVNBQVlj
*
J
and
reach
behind
thecxmtroi
panelf
torn
the
right
hand
side
,
Using
wire
cutters
,
cut
and
remove
the
tagged
wire
.
INTRODUCTION
These
instructions
tor
installation
,
operation
and
maintenance
of
5
VHK
Model
20
series
vacuum
circuit
breakers
should
be
read
carefully
and
used
as
a
guide
during
installation
and
initial
operation
,
The
specific
ratings
Of
each
modelcircurt
breaker
are
listed
on
The
individual
nameplates
.
File
these
instructions
in
a
readily
accessible
place
together
with
drawings
and
descriptive
data
of
the
switchgear
.
These
instruc
-
tions
will
be
a
guide
to
proper
maintenance
of
the
equipment
and
prolong
it
*
life
and
usefulness
.
'
WARNING
WAflNlMG
WARNING
WARNING
'
\
“
i
Fnor
to
anv
disassembly
or
inspection
Of
me
circus
Dreader
,
trc
cicsinc
3
snould
be
aiscnargec
.
end
me
ores
^
pr
should
br
open
.
Referring
to
Fig
,
1
,
If
it
is
necessary
to
raise
or
move
the
breaker
,
attach
a
lifting
yoke
(
5
)
at
point
4
on
both
skies
of
the
truck
,
or
a
fifth
wheel
at
point
6
to
transport
the
breaker
as
required
.
Installation
inspection
RECEIVING
AND
STORAGE
Inspect
the
condition
of
circuit
breaker
vacuum
interrupters
and
electrical
connections
prior
to
installing
thecircuit
breaker
into
tho
switchboard
.
Even
though
each
circuit
breaker
is
completely
adjusted
and
tested
at
the
factory
,
shipping
and
handling
condi
*
tlons
could
cause
defects
.
Immediately
upon
receipt
of
the
circuit
breakers
,
examine
the
cartons
to
determine
if
any
damage
or
loss
was
sustained
during
transit
,
tf
abuse
or
rough
handling
is
evident
,
file
a
damage
claim
at
once
wfm
the
cantor
and
promptly
notify
the
nearest
District
Office
,
The
company
Is
not
responsible
for
damage
of
goods
after
delivery
to
the
cantor
,
however
,
we
will
lend
assistance
If
notified
of
claims
.
Unpack
the
circuit
breakers
as
soon
as
possible
after
receipt
,
If
unpacking
is
delayed
,
difficulty
may
be
experienced
in
making
a
claim
for
damages
not
evident
upon
receipt
.
Use
care
In
unpack
*
ing
in
order
TO
avoid
damaging
any
of
tho
circuit
breaker
parts
,
Check
the
contents
of
each
canon
against
the
packing
list
before
discarding
any
packing
material
.
If
any
shortage
of
material
Is
discovered
,
promptly
notify
the
nearest
Dlstrtc
*
Office
.
Informa
-
tion
specifying
tho
purchase
order
number
and
part
numbers
of
the
damaged
or
missing
parts
should
accompany
the
claim
.
Circuit
breakers
should
be
Installed
In
.
their
permanent
location
as
soon
as
possible
.
If
the
breakers
are
not
to
be
placed
in
service
tor
some
time
,
it
is
advisable
to
provide
adequate
means
of
protection
.
This
may
bedone
by
keeping
the
breaker
in
its
original
shipping
carton
and
storing
in
a
warm
,
dry
and
uncontaminated
atmosphere
.
If
the
circuit
breaker
cannot
be
stored
properly
,
it
must
be
thoroughly
chocked
before
going
into
service
to
insure
it
has
not
absorbed
moisture
,
rusted
or
become
generally
contami
-
nated
in
any
way
.
Removing
Front
Cover
(
$
eo
Fig
.
1
)
The
assembly
can
be
removed
after
first
removing
four
(
4
)
lower
front
cover
screws
(
1
)
and
one
screw
(
7
)
on
each
side
,
inside
the
front
cover
.
Vacuum
interrupter
Examination
(
See
Fig
,
2
)
CAUTION
CAUTION
CAUTION
CAUTION
A
rrouf
'
chnp
stick
snou
;
d
oe
used
to
discnaroeine
mla
*
Dand
rir
.
j
;
or
.
?
ne
vacuum
interruoters
0
)
so
eauipPOG
,
Deiore
any
worn
*
?
.
,
aona
on
the
Interrupters
.
The
insulated
vacuum
envelope
(
2
)
should
be
examined
careful
!
)
for
cracks
in
the
area
of
the
metaMo
-
inaulatiOrt
seals
on
both
ends
and
around
the
midland
ring
.
Since
a
certain
amount
o
transmitted
light
is
usually
required
to
detect
cracks
,
the
irtspoc
tion
should
be
done
In
a
well
lighted
area
.
If
the
mid
-
band
ring
>
when
so
equipped
,
has
been
bent
by
an
accidental
impact
,
tha
area
should
be
specially
scrutinized
for
seal
damage
,
Smal
external
chips
will
not
impair
the
useful
life
of
the
Interrupter
.
Insulation
structure
All
Insulated
parts
should
be
checked
for
damage
*
Any
dust
or
dii
Should
bo
removed
by
air
orwiftod
with
a
dean
lintless
ctoth
.
Th
load
support
moldings
are
polyester
glass
and
occasionally
hev
some
resin
rich
cracks
or
crazing
develop
,
These
do
not
indicat
defective
material
and
should
not
cause
concern
.
CIRCUIT
BREAKER
INSTALLATION
General
Prior
to
initial
Installation
of
the
circuit
breaker
fmo
The
switch
-
board
,
certain
preliminary
inspections
should
be
made
to
insure
proper
operation
.
Tho
Inspection
procedures
tor
this
are
given
in
this
section
.
The
drcuft
breaker
is
shipped
with
contacts
closed
,
closing
•
springs
discharged
and
opening
springs
charged
,
ff
the
circuit
breaker
ie
furnished
with
an
undervoltage
device
,
the
device
will
be
lockwired
to
allow
closing
of
the
breaker
tor
shipment
,
A
tag
will
identity
the
lock
wire
.
To
remove
the
wire
,
open
the
breaker
Courtesy of NationalSwitchgear.com