Toshiba HCV-5HA User manual

TOSHIBA
INTERNATIONAL
CORPORATION
INSTRUCTION
MANUAL
MEDIUM
-
VOLTAGE
VACUUM
CONTACTOR
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TYPE
:
HCV
-
5
HA
7.2
kV
,
400
A
-
7.0
kA
(
4.5
kA
@
7.2
kV
)
TYPE
:
HCV
-
5
HAL
7.2
kV
,
400
A
-
7.0
kA
(
4.5
kA
@
7.2
kV
)
VFOOW
1
KLDOC
REV
.
PC
18
ftC
1
P
20
Q
MAY
1999
Courtesy of NationalSwitchgear.com

INTRODUCTION
Page
2
READ
THIS
MANUAL
carefully
for
important
information
about
safety
,
handling
,
and
maintenance
,
for
general
-
purpose
NEMA
Class
E
magnetic
controllers
.
This
manual
and
all
accompanying
drawings
should
be
considered
a
permanent
part
of
the
equipment
.
They
should
be
readily
available
for
review
and
reference
at
all
times
.
DIMENSIONS
shown
in
the
manual
are
in
metric
and
/
or
their
English
equivalent
.
These
instructions
are
not
intended
to
cover
all
details
,
combinations
,
or
variations
of
the
equipment
,
storage
,
or
installation
.
PROBLEMS
OR
QUESTIONS
should
be
addressed
to
:
Field
Service
Department
Toshiba
International
Corporation
13131
West
Little
York
Road
Houston
,
Texas
77041
USA
Telephone
:
(
713
)
466
-
0277
(
800
)
231
-
1412
(
800
)
527
-
1204
(
Canada
)
FAX
:
(
713
)
466
-
8773
Use
only
Toshiba
-
authorized
replacement
parts
.
A
WARNING
This
equipment
is
designed
and
built
in
accordance
with
applicable
safety
standards
in
effect
on
the
date
of
manufacture
.
Unauthorized
modifications
can
result
in
severe
injury
,
death
and
property
damage
.
Do
not
make
any
modifications
to
this
equipment
without
the
written
approval
of
Toshiba
.
AWARNING
MAY
1999
VFOOW
1
C
3
.
DOC
REV
.
3
PCI
8601
P
2
00
Courtesy of NationalSwitchgear.com

TABLE
OF
CONTENTS
Page
3
Page
Page
MAINTENANCE
4
17
SAFETY
DATA
General
Inspection
Vacuum
Interrupter
Bearing
Closing
Coils
Latch
Mechanism
Auxiliary
Switch
Safety
Data
Information
4
17
18
19
6
19
GENERAL
19
6
Recommended
Procedure
19
VACUUM
INTERRUPTER
RECEIVING
&
HANDLING
7
20
Replacement
Procedure
Removing
Mounting
Adjustment
of
Contacts
Operation
Check
7
20
Receiving
Handling
Storage
7
20
7
21
21
21
GENERAL
DESCRIPTION
8
TROUBLESHOOTING
Application
Load
Data
Location
Condition
Ratings
Construction
8
22
8
8
OUTLINE
DIAGRAM
9
23
10
WARRANTY
AND
LIMITATION
OF
LIABILITY
24
PRE
-
OPERATION
SET
-
UP
11
Application
Precautions
Installation
Controls
Power
Connections
-
Standard
Power
Connections
-
Latched
Drive
Unit
Configuration
Standard
Circuit
Diagram
Latched
Circuit
Diagrams
Trial
Operation
11
11
12
13
13
14
14
15
16
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SAFETY
DATA
Page
4
QUALIFIED
OPERATORS
ONLY
Only
qualified
persons
are
to
install
,
operate
,
or
service this
equipment
according
to
all
applicable
codes and
established
safety
practices
.
A
qualified
person
must
:
1
)
Carefully
read
the
entire instruction manual
.
Be
skilled
in
the
installation
,
construction
or
operation
of
the
equipment
and
aware
of
the
hazards involved
.
Be
trained
and
authorized
to
safely
energize
,
de
-
energize
,
clear
,
ground
,
lockout
and
tag
circuits
in
accordance
with
established
safety
practice
.
Be
trained
and
authorized
to
perform
the
service
,
maintenance
or
repair
of
this
equipment
.
Be
trained
in
the
proper
care
and
use
of
protective
equipment
such
as
rubber
gloves
,
hard hat
,
safety
glasses
,
face
shield
,
flash
clothing
,
etc
.
in
accordance
with
established
practices
.
Be
trained
in
rendering
first
aid
.
2
)
3
)
4
)
5
)
6
)
SAFETY CODES
Toshiba
medium
voltage
controllers
are
general
purpose
,
Class
E
,
magnetic
controllers
designed
and
built
in
accordance
with the latest
applicable
provisions
of
NEMA
ICS
3
Part
2
,
UL
347
and
the
National
Electrical
Code
.
Installations
must
comply
with
all
applicable
state
and
local codes
,
adhere
to
all
applicable
National
Electric
Code
(
NFPA
70
)
standards and
instructions
provided
in
this
manual
.
Courtesy of NationalSwitchgear.com

SAFETY
DATA
Page
5
IMPORTANT
MESSAGES
Read
this
manual
and
follow
its
instructions
.
Signal
words
such
as
DANGER
,
WARNING
,
CAUTION
,
and
NOTE
will
be
followed
by
important
safety
information
that
must
be
carefully
reviewed
.
n
i
Indicates
a
situation
which
will
result
in
death
,
seriously
injury
,
and
severe
property
damage
if
you
do
not
follow
instructions
.
A
DANGER
Means
that
you
might
be
seriously
injured
or
killed
if
you
do
not
follow
instructions
.
Severe
property
damage
might
also
occur
.
A
WARNING
Means
that
you
might
be
injured
if
you
do
not
follow
instructions
.
Equipment
damage
might
also
occur
.
A
CAUTION
Gives
you
helpful
information
.
NOTE
READ
SAFETY
SIGNS
To
avoid
injury
,
you
must
read
and
follow
the
instructions
in
this
manual
and
on
the
safety
signs
located
on
the
equipment
.
Keep
the
safety
signs
visible
and
in
good
shape
.
Never
remove
,
damage
,
or
cover
any
safety
sign
.
Courtesy of NationalSwitchgear.com

Page
6
GENERAL
Please
read
this
manual
and
all
accompanying
documentation
in
its
entirety
prior
to
installation
and
operation
.
These
instructions
are
not
intended
to
cover
all
details
,
combinations
or
variations
of
the
equipment
,
storage
or
installation
.
Toshiba
medium
voltage
open
vacuum
type
magnetic
motor
controllers
are
UL
recognized
and
built
in
accordance
with
the
latest
applicable
provisions
of
NEMA
ICS
3
Part
2
,
UL
347
and
the
National
Electrical
Code
.
AWARNING
There
is
a
hazard
of
shock
or
bum
whenever
working
on
or
near
electrical
equipment
ALL
POWER
supplying
the
equipment
should
be
turned
off
before
starting
work
,
and
disconnecting
means
should
be
locked
out
and
/
or
tagged
out
in
accordance
with
NFPA
70
E
,
Part
II
and
ANSI
Z
244.1
.
Where
it
is
not
feasible
to
de
-
energize
the
unit
,
the
following
precautions
should
be
taken
;
Persons
working
near
exposed
parts
that
are
or
may
be
energized
should
be
instructed
to
and
should
use
practices
(
including
appropriate
apparel
,
equipment
and
toois
)
in
accordance
with
NFPA
70
E
,
Part
II
.
A
.
B
.
Persons
working
on
exposed
parts
that
are
or
may
be
energized
should
,
in
addition
to
A
,
be
qualified
persons
who
have
been
trained
to
work
on
energized
equipment
.
RECOMMENDED
PROCEDURE
The
successful
gnd
safe
operation
of
medium
voltage
control
equipment
is
dependent
upon
handling
,
installation
,
operation
and
maintenance
by
qualified
personnel
.
Failure
to
follow
fundamental
installation
and
maintenance
recommendations
could
lead
to
personal
injury
and
damage
to
the
equipment
and
other
property
.
When
referred
to
in
this
manual
and
on
product
labels
,
a
qualified
person
is
one
who
is
familiar
with
installation
,
construction
or
operation
of
the
equipment
and
the
hazards
involved
.
In
addition
,
this
person
should
have
the
following
qualifications
;
1
)
Is
trained
and
authorized
to
energize
,
de
-
energize
,
dear
,
ground
and
tag
circuits
in
accordance
with
established
safety
practices
.
2
)
Is
trained
in
the
proper
care
and
use
of
protective
equipment
such
as
rubber
gloves
,
hard
hat
.
safety
glasses
or
face
shields
,
flash
clothing
,
etc
.
in
accordance
with
established
practices
.
3
)
Is
trained
in
rendering
first
aid
.
KEEP
THESE
INSTRUCTIONS
FOR
FUTURE
REFERENCE
Courtesy of NationalSwitchgear.com

RECEIVING
&
HANDLING
Page
7
RECEIVING
Upon
receipt
of
the
equipment
,
make
an
immediate
inspection
for
any
damages
which
may
have
occurred
during
shipment
.
When
the
contactor
is
received
it
should
be
unpacked
sufficiently
to
inspect
for
concealed
damage
and
to
determine
that
the
shipment
is
complete
and
correct
.
If
any
damage
is
found
it
should
be
noted
prior
to
accepting
the
shipment
if
possible
.
Check
for
things
such
as
,
damage
to
the
container
,
water
seepage
or
moisture
on
the
contactor
.
Check
the
nameplate
to
confirm
that
the
ratings
meet
the
intended
application
.
If
any
parts
are
damaged
or
missing
,
file
a
claim
immediately
with
the
carrier
and
notify
the
Toshiba
sales
office
.
Try
to
give
as
much
information
as
possible
when
filing
a
claim
.
HANDLING
&
STORAGE
Vacuum
contactors
should
be
handled
with
care
to
avoid
damage
.
Contactors
should
be
kept
in
an
upright
position
and
moved
with
suitable
equipment
.
If
the
contactor
is
to
be
stored
over
any
length
of
time
,
the
packing
material
should
be
restored
for
protection
during
that
period
.
Where
conditions
permit
,
the
packing
should
be
left
intact
until
the
contactor
is
ready
for
installation
.
Store
the
contactor
in
a
dry
and
dust
free
area
.
It
should
not
be
left
outdoors
or
in
adverse
conditions
.
If
unprotected
,
corrosion
,
rust
and
insulation
deterioration
will
occur
.
Courtesy of NationalSwitchgear.com

GENERAL
DESCRIPTION
Page
8
SERVICE
CONDITIONS
Application
Condition
The
type
HCV
vacuum
contactor
is
manufactured
in
accordance
with
IEC
60470
(
1974
)
,
NEMA
ICS
3
Part
2
(
1993
)
.
The
vacuum
contactor
should
be
used
in
the
following
conditions
.
Table
1
Normal
Service
Conditions
Less
than
2
,
000
m
(
6600
ft
)
Above
2
,
000
m
consult
factory
-
5
“
C
min
.
to
+
40
°
C
max
.
Its
average
over a
period
of
24
hr
does
not
exceed
+
35
°
C
.
45
%
min
.
to
85
%
max
.
20
Hz
-
1
G
or
less
30
G
43
lbs
.
Latched
type
44
lbs
.
-
Altitude
:
-
Ambient
temperature
:
-
Relative
humidity
:
-
Vibration
:
-
Shock
-
Weight
If
the
contactor
is
to
be used
in
conditions
other
than
those
specified
above
,
piease
consult
Toshiba
International
Corporation
.
Table
2
General
Aoplication
and
Load Data
3
Phase
Capacitor
1
.
OFF
Syn
Motor
3
Phase
Transformer
System
Voltage
0.8
PF
Ind
/
Syn
Motor
1500
kVAR
2000
kVAR
2000
kVAR
2000
kVAR
2000
HP
2500
HP
3500
HP
5000
HP
1500
kVA
2000
kVA
3000
kVA
4000
kVA
2.2
-
2.5
kV
3.0
-
3.3
kV
4.0
-
5
.
OkV
6.0
-
6.6
kV
'
1750
HP
2250
HP
3000
HP
4500
HP
The above table
is
based
on
general
load data
and
standard
application
.
Lower
limitations
may
apply
on
specific
applications
(
i
.
e
.
applications
above
6600
feet
elevations
)
.
Location
condition
The
location where the
contactor
is
to
be
installed
should
be
free
from
dust
,
corrosive
gas
and
moisture
.
When
it
is
to
be
used
in
a
chemical
plant
or
in
outdoor
applications
,
take
necessary
precautions
against
corrosion
,
water
seepage
and
condensation
.
Courtesy of NationalSwitchgear.com

GENERAL
DESCRIPTION
Page
9
CONTACTOR
RATINGS
HCV
-
5
HA
7200
Volts
Rated
Voltage
400
Amps
Rated
Current
7000
A
RMS
Symmetrical
@
5000
V
Max
.
4500
A
RMS
Symmetrical
@
7200
V
Max
.
Interrupting
Capacity
Permissible
Switching
Frequency
1200
/
Hour
2
,
500
,
000
Operations
Mechanical
Life
250
,
000
Operations
Electrical
Life
80
ms
or
less
Closing
Time
25
ms or
less
Opening
Time
*
10
ms
or
less
Arcing
Time
Pick
-
Up
Voltage
AC
or
DC
85
%
Rated
(
Hot
)
-
70
%
Rated
(
Cold
)
50
%
Rated
(
Hot
)
-
40
%
Rated
(
cold
)
Drop
-
Out
Voltage
AC
or
DC
Rated
Control
Voltage
AC
115
/
120
or
230
/
240
V
50
/
60
Hz
Rated
Control
Voltage
DC
120
/
125
or
240
/
250
V
670
VA
AC
(
700
W
DC
)
Coil
Circuit
Inrush
85
VA
AC
(
85
W
DC
)
Coif
Circuit
Holding
3
N
.
O
.
-
3
N
.
C
.
Auxiliary
Contact
Arrangement
Auxiliary
Contact
Rating
10
A
,
600
V
(
NEMA
Class
A
600
)
*
-
DC
switching
,
opening
terminals
3
&
4
.
HCV
-
5
HAL
(
Latched
Type
Only
)
Permissible
Switching
Frequency
300
/
Hour
Mechanical
Life
250
,
000
Operations
Tripping
Voltage
40
-
60
%
Rating
DC
Tripping
Current
4.8
A
DC
Max
Courtesy of NationalSwitchgear.com

*
0
0
)
a
(
0
o
M l
00
n
o
g
s
n
—
4
-
Upper
terminal
i
Mold
frame
a
-
o
I
nsu
1
a
t
i
n
<
|
flange
O
Vacuum
interrupter
Movable
conductor
ON
/
OFF
nameplale
£
I
t
Rotating
shaft
Lower
terminal
Rearing
i
<
Spring
O
^
^
Auxiliary
6
witch
£
Closing
coii
/
00
3
ro
3
<
Mounting
section
of
mechanical
interlock
.
m
Armature
n
Core
n
C
Mounting
fitting
n
©
Control
terminal
block
(
with
driving
unit
)
batch
mechanism
3
P
Resetting
spring
i
n
£
i
c
e
3
J
m
Courtesy of NationalSwitchgear.com

PRE
-
OPERATION
SET
-
UP
Paqe
11
APPLICATION
PRECAUTIONS
Verify
that
the
voltage
and
current
applied
is
within
the
specified
ratings
.
{
See
application
table
,
page
5
)
.
1
)
When
the
contactor
is
used
with
an
induction
heater
facility
,
the
switching
life
of
the
vacuum
interrupter
is
approximately
250
,
000
operations
.
The
vacuum
interrupter
should
be
replaced
after
250
,
000
operations
.
2
)
When
the
contactor
is
applied
to
a
capacitor
load
,
be
sure
to
use
a
space
heater
to
keep
the
temperature
above
the
dew
point
and
prevent
condensation
.
Be
sure
to
use
a
heater
adequately
sized
for
the
compartment
in
which
the
contactor
is
installed
.
The
contactor
should
always
be
applied
with
a
protective
power
fuse
.
3
)
INSTALLATION
During
installation
,
protect
the
contactor
from
dust
and
falling
debris
.
The
following
precautions
should
be
taken
;
The
mounting
surface
should
be
horizontal
(
level
;
±
1
mm
)
.
If
the
mounting
surface
is
not
level
,
adjust
with
spacers
or
shims
.
D
The
contactor
base
has
four
(
4
)
mounting
holes
.
Use
M
8
or
5
/
16
bolts
to
securely
mount
the
contactor
.
2
)
In
wiring
the
main
circuit
,
wires
should
be
given
sufficient
length
to
be
flexible
for
service
.
The ground
wires
should
be
#
10
AWG
or
larger
.
3
)
Avoid
touching
the
surface
of
the
vacuum
interrupter
with
soiled
hands
.
You
can
damage
the
silicon
finish
on
the
interrupter
.
If
the
interrupter
becomes
dirty
,
simply
clean
it
with
a
non
-
tracking
cleaner
such
as
rubbing
alcohol
.
4
)
Courtesy of NationalSwitchgear.com

‘
*
+
t
.
Page
12
PRE
-
OPERATION
SET
-
UP
CONTROLS
The
drive
unit
for
the
closing
coil
assembly
is
installed
in
a
cavity
in
the
molded
frame
housing
.
The
closing
circuit
can
be
operated
by
applying
either
AC
or
DC
to
this
drive
unit
.
The
optional
latch
trip
circuit
uses
DC
as
standard
.
When
a
latched
contactor
is
operated
using
AC
power
,
it
is
recommended
that
a
capacitor
trip
device
be
used
.
The
standard
control
voltage
(
factory
preset
)
is
120
V
AC
.
To
operate
at
other
ratings
see
the
selection
chart
below
.
Fig
.
2
Control
Voltage
Selection
for
Closing
Coils
DIP
SWITCH
OH
DIP
SWITCH
ON
!
1
3
7
+
5
8
OFF
SWITCH
NO
.
VOLTAGE
AC
/
DC
3
3
s
2
A
1
3
ON
OFF
OFF
OFF
OFF
I
1
QQ
-
110
V
ON
•
+
ON
|
ON
|
OFF
|
OFF
115
-
12
QV
OFF
OFF
I
123
V
|
OFF
(
OFF
|
OFF
OFF
ON
|
OFF
i
200
-
2
20
V
ON
ON
OFF
OFF
OFF
ON
230
-
2
-
iOv
OFF
j
OFF
|
ON
ON
|
OFF
|
ON
OFF
j
OFF
|
OFF
OFF
[
ON
ON
230
V
OBIVE
UNIT
\
JOARO
The
following
is
a
list
of
the
available
trip
colNoltaaes
for
a
latched
type
contactor
:
24
V
DC
125
V
DC
32
V
DC
250
V
DC
-
8
V
DC
Courtesy of NationalSwitchgear.com

PRE
-
OPERATION
SET
-
UP
Page
13
CONNECTION
OF
CONTROL
POWER
SUPPLY
Figures
3
and
4
show
the
internal
connections
of
the
magnetically
held
(
normally
energized
)
type
and
the
latched
type
respectively
.
Connect
control
power
and
open
/
close
control
signals
according
to
these
connection
diagrams
.
Note
:
Connections
are
the
same
for
100
V
and
200
V
class
.
Only
the
drive
unit
settings
should
be
changed
to
match
the
application
control
voltage
.
52
CC
Jumper
or
2
Relay
Contacts
i
U
)
ro
j
Power
-
Supply
*
Closing
Coils
Control
Terminal
Block
(
Drive
Unit
is
Attached
)
Fig
.
3
Connections
for
Magnetically
Held
Type
.
Note
:
Terminals
3
and
4
are
rated
for
4.8
A
DC
max
.
A
wire
jumper
(
14
AWG
or
larger
)
can
be
used
instead
of
a
relay
on
3
and
4
.
Note
:
Connections
are
the
same
for
100
V
and
200
V
class
.
Only
the
drive
unit
settings
should
be
changed
to
match
the
aco
/
ication
control
vo
/
taoe
.
'
Contactor
Auxiliary
Switch
Contact
21
1 1
r
Trip
Power
Supply
I
©
!
Jumper
or
2
Relay
y
Contacts
Power
Suoply
52
CC
E
i
-
>
i i
Closing
Coils
Trip
Coil
Control
Terminal
Block
(
Drive
Unit
is
Attached
)
Fig
.
4
Connections
for
Mechanically
Latched
Type
.
Note
:
Terminals
3
and
4
are
rated
for
4.8
A
DC
max
.
A
wire
jumper
(
14
AWG
or
larger
)
can
be
used
instead
of
a
relay
on
3
and
4
.
Courtesy of NationalSwitchgear.com

Page
14
CONTROLS
3
Ov
1
c
Contacts
or
Jumper
Wire
1
4
2
T
'
*
«
»
1
s
2
O
2
l
CE
I
OECHATO
*
*
1
3
>
*
l
TCHI
MG
f
1
Fig
.
5
Internal
Configuration
of
Drive
Unit
STANDARD
OPERATION
CIRCUIT
The
following
figures
illustrate
the
vacuum
contactor
and
its
auxiliary
circuits
(
control
and
monitoring
)
.
Fig
.
6
represents
the
standard
operation
circuit
diagram
of
the
normally
energized
type
and
Fig
.
7
(
a
&
b
)
the
latched
type
.
Wiring
should
be
implemented
according
to
these
circuit
diagrams
.
Remote
Operation
\
3
Switch
'
1
OFF
0
-
OFF
:
£
°
L
:
V
hON
how
«
?
*
o
|
o
o
a
a
Du
<
<
>
>
in
o
oi
m
T
^
o
o
o
o
4
-
CN
I
VACUUM
CONTACTOR
LOCAL
—
I
*
<
h
CR
1
:
t
T
CR
«
•
44
4
»
m
*
4
nn
,
n
l
REMOTE
0
V
Q
i
5
START
;
INTERLOCK
j
DU
?
*
«
0
0
M
n
H
n
n
t
’
T
STOP
INTERLOCK
—
DOOR
swrrcH
w
©
1
X
2
E
J
(
OVERLOAD
)
J
Li
i
6
)
CONTROL
RELAY
-
4
Fig
,
6
Standard
Operation
Circuit
Diagram
of
Normaliy
Energized
Type
,
Courtesy of NationalSwitchgear.com

LATCHED
CIRCUIT
Page
15
Fig
.
7
a
Standard
Operation
Circuit
Diagram
of
Latched
Type
Using
Shunt
Trip
REMOTE
OPERATION
swrrrN
o
-
4
hi
34
h
"
OFF
OFF
tii
J
i
4
LOCAL
s
REMOTE
CR
VCTT
3
5
*
—
5
y
i
1
-
5
TART
INTERLOCK
i
52
53
v
*
55
ms
15
i
4
:
i
;
:
A
o
o
5
«
i
4
I
DU
3
i
i
i
i
22
23
34
25
25
!
1
i
*
&
\
!
52
*
52
9
7
«
!
CC
TC
CC
4
4
5
I
®
CONTROL
RELAY
5
i
i
-
«
6
7
3
Fig
.
7
b
Standard
Operation
Circuit
Diagram
of
Latched
Type
Using
Capacitor
Trip
Device
REMOTE
OPERATION
swrrcH
6
o
;
i
—
ON
“
ON
:
.
0
—
OFF
r
OFF
—
2
E
O
0
i
I
-
r
-
J
E
_
J
0
o
LOCAL
i
REMOTE
9
D
CR
3
1
VCTT
"
T
"
i
START
INTERLOCK
i
52
53
54
55
55
i
?
»
CTD
O
<
5
*
0
o
p
DU
M
0
o
4
I
:
!
9
L
.
i
t
©
CONTROL
RELAY
0
2
Courtesy of NationalSwitchgear.com

TRIAL
OPERATION
page
16
TRIAL
OPERATION
A
WARNING
MAKE
SURE
MAIN
POWER
IS
OFF
.
After
mounting
and
wiring
of
the
vacuum
contactor
,
make
the
following
inspections
.
Check
for
any
loose
connections
.
D
Check
for
any
winng
errors
.
Perform
this
test
with
only
the
control
circuit
energized
.
2
)
Confirm
that
the
operation
is
correct
.
For the latched
type
contactor
,
check that
the
latch
correctiy
engages
and
tnps
when the
closeArip
signals
are
applied
.
Also
,
manually
trip
the
contactor
using
the
trip
lever
to
verify
proper
operation
.
For latch
kit
adjustment
and
maintenance
please
refer
to
manual
no
.
6
F
9
G
0120
-
Installation Instructions
of
Latch
Kits
for CV
-
5
HA
.
Courtesy of NationalSwitchgear.com

MAINTENANCE
Page
17
GENERAL
INSPECTION
MAINTENANCE
AND
INSPECTION
The
following
maintenance
and
inspections
are
recommended
to
maintain
the
performance
level
and
extend
the
operational
life
of
the
vacuum
contactor
.
BEFORE
CONDUCTING
MAINTENANCE
AND
INSPECTIONS
,
MAKE
SURE
THAT
ALL
POWER
IS
TURNED
OFF
.
A
WARNING
ITEMS
FOR
INSPECTION
Table
2
z
z
CO
O
:
o
LU
z
H
:
LU
Z
LG
2
CL
H
1
2
j
CD
QJ
j
O
;
^
1
,
I
o
I
?
o
;
>
i
CD
O
CO
z
H
O
ZJ
E
00
LU
!
Q
Q
I
K
Z
I
<
D
i
cr
o
CD
CO
<
<
;
O
P
H
i
CO
<
<
cr
i
<
z
i
1
Q
_
cr
INSPECTION
ITEM
>
H
O
CO
LU
f
—
c
-
c
co
<
z
CL
.
—
o
o
o
I
cr
:
>
LU
D
<
LU
UJ
LU
cr
f
g
;
cr
<
Q
_
CO
o
f
-
o
CO
I
o
z
l
z
z
CO
o
I
Q
!
o
VACUUM
INTERRUPTER
o
oo
o
t
>
MOVABLE
CONDUCTOR
c
CO
o
o
.
z
I
o
o
z
UPPERS
LOWER
TERMINALS
i
—
i
<
<
oo
cr
£
LU
CL
O
MOLDED
FRAME
o
o
o
£
o
CO
z
z
O
<
r
-
X
o
O
LU
UJ
CO
o
o
INSULATION
FLANGE
o
0
o
CM
>
rr
o
o
*
LU
BEARING
>
LU
E
o
CLOSING
COIL
O
O
H
E
^
h
-
Z
o
o
UJ
<
E
ARMATURE
&
CORE
<
o
o
LU
>
-
rH
5
<
AUXILIARY
SWITCH
LU
o
o
j
o
i
UJ
i
o
z
£
o
o
CO
TRIP
COIL
V
-
z
o
o
H
<
<
rc
LU
\
/
S
o
O
O
O
ROLLER
UJ
2
<
D
CO
CO
o
BOLTS
S
NUTS
c
>
•
1 1
INSULATION
WIRE
o
O
THE
LIFE
EXPECTANCY
OF
THE
ELECTRICAL
PARTS
(
VACUUM
INTERRUPTER
AUXILIARY
SWITCH
)
IS
250
,
000
OPERATIONS
NOTE
Courtesy of NationalSwitchgear.com

MAINTENANCE
Page
18
A
WARNING
Make
Sure
Power
is
Turned
Off
.
MAINTENANCE
Maintenance
Procedure
Location
•
Check
the
upper
and
lower
flanges
and
interrupter
shaft
to
see
if
they
are
contaminated
or
corroded
.
Vacuum
Interrupter
UPPER
FLANGE
If
contaminated
...
use
a
clean
cloth
and
rubbing
alcohol
.
i
If
corroded
replace
with
a
new
interrupter
.
!
NOTE
:
Avoid
touching
the
ceramic
surface
.
Skin
oils
may
harm
the
silicon
varnish
.
LOWER
FLANGE
SHAFT
•
Check
the
main
contact
wear
in
the
vacuum
interrupter
.
WEAR
GAUGE
If
the
wear
gauge
can
be
inserted
,
then
there
is
sufficient
contact
material
available
for
continued
use
.
I
I
i
2.7
mm
—
1
MV
4
RIUM
If
the
gauge
cannot
be
inserted
,
replace
the
interrupter
.
NSULATMG
FLANGE
NOTE
:
This
check
is
made
with
the
contactor
ciosed
.
•
Check
vacuum
in
the
vacuum
interrupter
.
Fig
.
8
Vacuum
Interrupter
Apply
10
kVAC
between
the
upper
and
lower
terminals
for
one
minute
.
If
there
is
no
voltage
breakdown
,
the
vacuum
intemjpter
is
acceptable
for
continued
use
.
If
there
is
voltage
breakdown
,
replace
with
a
new
vacuum
interrupter
before
continued
use
.
NOTE
:
If
there
is
a
vacuum
failure
,
it
can
be
confirmed
by
pushing
down
on
the
insulating
flange
below
the
vacuum
interruoter
,
If
the
interrupter
shaft
can
easily
be
moved
,
then
the
intemjpter
has
lost
vacuum
.
Courtesy of NationalSwitchgear.com

Page
19
MAINTENANCE
Maintenance
Procedure
Location
(
Reference
)
Criteria for
contact
gap
and
wipe
Contact
Gap
Wipe
Contactor
Allowable Wear
Vacuum
Interrupter
Normally
Energized
Type
4
mm
+
0.2
,
-
0
2.5
mm
2
mm
Latched
Type
4
mm
+
0.2
,
-
0
2.3
mm
1.8
mm
*
Check
for
loose
mounting
bolts
.
Tighten
if
loose
.
Torque
M
6
bolts
to
48
in
-
lb
.
Bearing
*
Check
for
discoloration
.
Yellow
(
Gold
)
available
for
continued
use
.
Dark
Brown
or
Black
replace
with
new
coil
.
If
the
closing
coil
is
overheating
,
contact
Toshiba
.
Closing
Coil
*
Check
that
the
holding
latch
reliably
engages
.
Note
:
To
manually
close the
latch
,
hold the central
area
of
the
rotating
shaft
with
a
wrench
and
operate
it
.
Latch
Mechanism
*
Check
the
condition
of
the roller
.
It
should
be
smooth
.
*
Lubricate
the
rotating
parts
with
a
molybdenum
disulfide
or
gear
lubricant
.
*
Verify
that there
is
remaining auxiliary
shaft
travel
.
Approximately
2.3
-
2.5
mm
.
*
Check
for
burnt
or
worn
contacts
.
Replace
if
burnt
or
worn
.
*
Check
rf
auxiliary
switch is
mounted
at
an
incline
or
if
mounting
plate
is
loose
.
If
inclined
or
loose
,
correct
it
Auxiliary
Switch
(
Reference
)
Values
for
gap
and
wipe
Contact
Type
Contact
Gap
Wipe
Normally
Open
Contact
4
mm
+
/
-
0
,
4
3
mm
+
/
-
0.3
Normally
Closed
Contact
4
mm
+
/
-
0.4
3
mm
+
/
-
0.3
Delayed
N
.
C
.
Contact
(
For
latched
type
contactor
only
.
Contacts
16
-
26
)
4.5
mm
+
/
-
0.5 2.5
mm
+
/
-
0.3
Courtesy of NationalSwitchgear.com

Page
20
MAINTENANCE
PROCEDURE
FOR
REPLACING
VACUUM
INTERRUPTERS
When
a vacuum
interrupter
has
reached
a
specified
life
(
250
,
000
operations
)
or
when
it
is
damaged
,
it
is
recommended that
it
be
replaced
in
the
following
sequence
:
-
B
-
Removing
(
M
8
BOLT
)
CONDUCTIVE
COLLAR
1
)
Hold the
insulating
flange
with
one
hand
and
loosen
nut
“
A
"
(
below
the
flexible
conductor
)
with
a
wrench
.
4
VACUUM
INTERRUPTER
/
UPPER
TERMINAL
2
)
Tum
the
insulating
flange
clockwise
by
hand
until
it
comes
off
the
movable
shaft of
the
vacuum
interrupter
.
\
3
)
With
the
vacuum
interrupter
held
in
one
hand
,
loosen
and
remove
bolt
MB
"
(
above
the
interrupter
)
with
a
wrench
.
i
FLEXIBLE
CONDUCTOR
CONDUCTIVE
—
NUT
X
-
V
“
A
"
4
)
While
pushing
down
on
the
insulating
flange
,
pull
the
vacuum
interrupter
forward
to
remove
it
.
(
M
8
NUT
)
N
At
this time
,
the
conductive collar
can
also be
removed
.
Keep
the
collar
for
later
use
.
INSULATING
FLANGE
>
REMOVE
Fig
.
9
Mounting
of
Vacuum
Interrupter
.
Courtesy of NationalSwitchgear.com