ABB VHK-R Installation and operating instructions

IB
6.2
.
7.7
-
4
C
Installation
/
Maintenance
Instructions
Medium
-
Voltage
Vacuum
Power
Circuit
Breakers
Type
VHK
-
R
250
,
500
and
750
MVA
1200
/
2000
Amperes
5000
-
15000
Volts
(
Shown
on
manufacturing
wheel
channels
)
JL
IIII
#
MPII
ABB
Power
Distribution
,
Inc
.
Circuit
Breaker
Division
ASEA
BROWN
BOVERI
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ID
Page
2
MIPIP
ASEA
BROWN BOVERI
*
1
CONTENTS
PAGE
INTRODUCTION
RECEIVING
AND
STORAGE
CIRCUIT
BREAKER
GENERAL
INFORMATION
Installation
Inspection
Vacuum
Interrupter
Examination
Insulation
Structure
Manual
Operation
of
Electrically
Operated
Models
MAINTENANCE
:
ADJUSTMENTS
AND
TESTS
General
Information
Millivolt
Drop
Test
Insulation
Cleaning
Circuit
Breaker
Operation
,
Contact
Adjustment
and
Timing
Contact
Adjustment
Closing
and
Opening
Times
and
Speeds
Operating
Mechanism
Latch
Engagement
(
Bite
)
Control
Relay
Adjustment
LUBRICATION
DIELECTRIC
TESTS
ELECTRICAL
CHARACTERISTICS
ELECTRICAL OPERATING
SEQUENCE
DC
Operating
Sequence
DC
Schematic
Diagram
of Control
Circuit
AC
Operating
Sequence
AC
Schematic
Diagram
of Control
Circuit
RENEWAL
PARTS
3
3
3
3
3
3
5
5
5
5
5
6
6
6
7
7
7
8
8
9
9
••••
•• •
••••
• • •••
a
9
10
11
12
13
:
These
instructions
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—
TVs
MIMP
Page
3
ASEA
BROWN
BOVERI
be
lockwired
to
allow
closing
of
the
breaker
for
shipment
.
A
tag
will
identify
the
lock
wire
.
To
remove
the
wire
,
open
the
breaker
and
reach
behind
the
control
panel
from
the
right
hand
side
.
Using
wire
cutters
,
cut
and
remove
the
tagged
wire
.
INTRODUCTION
These
instructions
for
installation
,
operation
and
maintenance
of
VHK
-
R
series
vacuum
circuit
breakers
should
be
read
carefully
and
used
as
a
guide
during
installation
and
initial
operation
.
The
specific
ratings
of
each
model
circuit
breaker
are
listed
on
the
individual
nameplates
.
WARNINGS
WA
1
mm
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
its
life
and
usefulness
.
Prior
to
any
disassembly
or
insoecticn
of
the
circuit
breaker
,
the
closing
springs
should
be
discharged
,
and
the
breaker
shcuid
be
open
.
Installation
Inspection
RECEIVING
AND
STORAGE
Inspect
the
condition
of
circuit
breaker
vacuum
interrupters
and
electrical
connections
prior
to
installing
the
circuit
breaker
into
the
switchboard
.
Even
though
each
circuit
breaker
is
completely
adjusted
and
tested
at
the
factory
,
shipping
and
handling
condi
-
tions
could
cause
defects
.
Immediately
upon
receipt
of
the
circuit
breakers
,
examine
the
cartons
to
determine
if
any
damage
or
loss
was
sustained
during
transit
.
If
abuse
or
rough
handling
is
evident
,
file
a
damage
claim
at
once
with
the
carrier
and
promptly
notify
the
nearest
District
Office
.
The
company
is
not
responsible
for
damage
of
goods
after
delivery
to
the
carrier
,
however
,
we
will
lend
assistance
if
notified
of
claims
.
Vacuum
Interrupter
Examination
(
See
Fig
.
1
)
f
>
[
-
310
*
»
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
the
circuit
breaker
parts
.
Check
the
contents
of
each
carton
against
the
packing
list
before
discarding
any
packing
material
.
If
any
shortage
of
material
is
discovered
,
promptly
notify
the
nearest
District
Office
.
Informa
-
tion
specifying
the
purchase
order
number
and
part
numbers
of
the
damaged
or
missing
parts
should
accompany
the
claim
.
:
v
k
grounding
stick
snouid
be
usee
to
ciscnarge
the
mid
-
banc
on
me
vacuum
interrupters
(
1
)
so
sou
ooad
.
before
snv
vc
cone
cr
.
the
interrupters
.
The
insulated
vacuum
envelope
(
2
)
should
be
examined
carefully
for
cracks
in
the
area
of
the
metal
-
to
-
insulation
seals
on
both
ends
and
around
the
mid
-
band
ring
.
Since
a
certain
amount
of
transmitted
light
is
usually
required
to
detect
cracks
,
the
inspec
-
tion
should
be
done
in
a
well
lighted
area
.
If
the
mid
-
band
ring
,
when
so
equipped
,
has
been
bent
by
an
accidental
impact
,
that
area
should
be
specially
scrutinized
for
seal
damage
.
Small
external
chips
will
not
impair
the
useful
life
of
the
interrupter
.
Circuit
breakers
should
be
installed
in
their
permanent
location
as
soon
as
possible
.
If
the
breakers
are
not
to
be
placed
in
service
for
some
time
,
it
is
advisable
to
provide
adequate
means
of
protection
.
This
may
be
done
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
checked
before
going
into
service
to
insure
it
has
not
absorbed
moisture
,
rusted
or
become
generally
contami
-
nated
in
any
way
.
Insulation
Structure
All
insulated
parts
should
be
checked
for
damage
.
Any
dust
or
dirt
should
be
removed
by
air
or
wiped
with
a
clean
lintless
cloth
.
The
lead
support
moldings
are
polyester
glass
and
occasionally
have
some
resin
rich
cracks
or
crazing
develop
.
These
do
not
indicate
defective
material
and
should
not
cause
concern
.
CIRCUIT
BREAKER
GENERAL
INFORMATION
Prior
to
initial
installation
of
the
circuit
breaker
into
the
switch
-
board
,
certain
preliminary
inspections
should
be
made
to
insure
proper
operation
.
The
inspection
procedures
for
this
are
given
in
this
section
.
NOTE
:
It
is
recommended
that
a
dielectric
withstand
test
be
made
prior
to
putting
this
or
any
type
vacuum
circuit
breaker
into
service
.
Refer
to
Dielectric
Tests
,
in
the
Maintenance
,
Adjustments
and
Tests
section
of
this
bulletin
,
for
the
correct
test
procedure
.
The
circuit
breaker
is
shipped
with
contacts
closed
,
closing
springs
discharged
and
opening
springs
charged
.
If
the
circuit
breaker
is
furnished
with
an
undervoltage
device
,
the
device
will
Courtesy of NationalSwitchgear.com

V
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a
a
a
Page
4
MW
IP
ASEA
BROWN
SOVERI
A
4
SPRING
STATUS
INDICATOR
7
MOTOR
POWER
CON
’
ROL
SWITCH
r
MANUAL
TRIP
I
-
0
CA
_
—
ELECTRIC
:
1
CLOSE
/
'
RIP
(
OPTIONAL
)
MANUAL
CLOSE
“
1
-
r
\
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n
OPERATIONS
COUNTER
ir
OPEN
/
CLOSE
II
INDICATOR
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'
MANUAL
CHARGE
POR
”
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°
©
©
j
4
Fig
.
2
-
Front
Circuit
Breaker
Panel
&
Accessories
(
See
Detail
2
A
)
Fig
.
1
-
Circuit
Breaker
Rear
-
5
KV
breaker
shown
.
Lower
leads
for
15
KV
breaker
are
slightly
higher
Detail
2
A
-
Manual
Charging
Of
Electrically
Operated
Circuit
Breakers
Fig
.
3
-
Contact
Pressure
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II
»
11
MIPIP
ID
Page
5
ASEA
BROWN
BOVERI
If
,
however
after
the
first
inspection
period
there
is
no
indication
of
any
problems
,
actual
operating
experience
with
specific
circuits
will
indicate
the
future
amount
of
maintenance
needed
for
the
various
circuit
breakers
and
the
procedure
can
be
modified
as
required
.
Manual
Operation
of
Electrically
Operated
Models
Electrically
operated
circuit
breakers
may
be
charged
manually
by
a
removable
maintenance
handle
for
bench
tests
or
emer
-
gency
operation
.
To
manually
charge
the
closing
springs
,
first
position
the
maintenance
handle
hooked
section
in
the
long
slot
on
the
pawl
carrier
(
Refer
to
Figure
2
)
.
The
small
tab
on
the
maintenance
handle
will
fit
the
small
hole
of
the
pawl
carrier
.
Using
a
pumping
motion
,
rotate
the
pawl
carrier
until
the
ratchet
wheel
no
longer
rotates
.
At
this
point
,
the
spring
charged
in
-
dicator
will
indicate
SPRINGS
CHARGED
.
The
circuit
breaker
can
be
closed
manually
with
the
manual
close
lever
.
NOTE
:
Occasionally
the
motor
crank
arm
will
stop
in
a
position
that
will
not
allow
manual
spring
charging
.
When
this
happens
,
the
motor
crank
arm
must
be
rotated
manually
by
using
a
screwdriver
to
rotate
the
crank
arm
sufficiently
so
that
the
springs
may
then
be
manually
charged
with
the
maintenance
handle
.
Where
unusual
service
conditions
exist
,
as
covered
by
ANSI
Standard
C
37.04
,
it
must
be
presumed
thatthese
conditions
were
considered
at
the
time
of
order
and
that
the
equipment
supplied
was
designed
for
the
special
application
and
that
an
appropriate
supplemental
maintenance
program
has
been
developed
.
These
maintenance
instructions
only
cover
circuit
breakers
used
under
the
standard
service
conditions
.
At
the
selected
maintenance
period
,
the
following
tests
and
adjustments
should
be
made
:
NOTE
:
The
following
tabulated
tests
and
adjustments
are
all
that
are
normally
necessary
for
proper
maintenance
and
operation
of
theVHK
-
R
circuit
breaker
.
The
remaining
portions
of
the
breaker
-
close
coil
assembly
,
shunt
trip
device
,
control
relay
,
auxiliary
switch
and
motor
--
require
no
maintenance
during
the
standard
life
of
the
circuit
breaker
regardless
of
the
operating
duty
.
MAINTENANCE
,
ADJUSTMENTS
AND
TESTS
General
Information
The
VHK
-
R
circuit
breakers
are
designed
for
minimum
mainte
-
nance
and
tested
to
insure
that
only
minimum
maintenance
will
be
required
.
The
few
adjustments
that
are
noted
are
required
only
when
an
operational
check
indicates
a
problem
.
Of
course
,
during
the
maintenance
checks
,
all
accessible
bolts
,
units
and
screws
should
be
routinely
checked
to
insure
that
they
are
tight
.
D
.
C
.
Millivolt
Drop
Test
During
maintenance
periods
,
the
condition
of
the
breaker
current
circuit
can
easily
be
determined
by
performing
a
millivolt
droptest
.
This
test
should
be
performed
regardless
of
whether
the
circuit
breaker
had
interrupted
low
or
high
currents
or
has
minimum
operations
.
It
is
recommended
that
the
circuit
breaker
be
normally
inspected
after
the
first
2000
operations
,
regardless
of
the
type
of
duty
it
is
used
for
.
These
operations
can
be
either
no
-
load
mechanical
,
load
current
switching
,
bulk
capacitor
or
reactor
switching
opera
-
tions
,
or
for
motor
starting
applications
.
The
following
table
lists
the
millivolt
drop
and
resistance
values
for
the
circuit
breakers
covered
by
this
instruction
book
,
from
term
inal
to
terminal
,
exclusive
of
the
primary
disconnects
.
Vacuum
interrupters
,
as
used
on
the
VHK
-
R
circuit
breakers
,
have
an
inherently
long
contact
life
and
will
provide
trouble
-
free
service
under
varied
application
conditions
,
as
long
as
the
circuit
breaker
is
applied
within
its
rating
.
The
wear
condition
of
the
individual
vacuum
interrupters
will
vary
,
depending
on
circuit
conditions
and
such
variables
as
single
phase
versus
three
-
phase
interruption
,
X
/
R
ratio
(
asymmetry
)
and
relay
delay
times
.
Of
course
,
interrupting
high
short
-
circuit
current
will
cause
contact
erosion
to
occur
faster
than
load
current
interruptions
.
The
interrupters
for
the
VHK
-
R
Circuit
Breakers
are
tested
up
to
2000
%
KSI
.
It
is
unlikely
that
a
circuit
breaker
will
be
subjected
to
this
much
duty
during
the
life
of
the
breaker
and
it
is
not
expected
that
the
interrupters
will
have
to
be
replaced
due
to
excessive
erosion
of
contacts
.
There
is
,
however
,
a
check
for
contact
wipe
(
contact
pressure
)
which
is
also
a
measure
of
contact
erosion
.
This
check
is
covered
under
"
Circuit
Breaker
Operation
and
Contacts
"
.
When
contact
wipe
is
less
than
the
minimum
specified
and
there
is
not
a
mechanical
problem
,
then
the
interrupter
should
be
replaced
due
to
contact
erosion
.
MV
:
;;
iDtopil
Maximum
Mte
^
Ohms
CIrcul
Breaker
250
1200
Ampere
8
40
*
Millivolt
drop
with
20
(
fcmperes
DC
flowing
.
Insulation
Cleaning
Any
dirt
,
dust
or
grease
should
be
removed
from
the
surfaces
of
the
entire
current
carrying
structure
and
vacuum
interrupter
*
.
Wiping
the
surface
with
a
clean
lint
free
cloth
is
normally
sufficient
for
this
purpose
.
Courtesy of NationalSwitchgear.com

lb
b
.
2
.
/
.
/
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6
ik
HU
MIPW
ASEA
BROWN
BOVERI
•
Remember
to
discharge
mid
-
band
ring
on
interrupters
so
equipped
.
d
.
The air
gap
is
the
difference
between
the
two
measure
-
ments
.
The
acceptable
limits
are
.
375
-
.
500
,
with
the
upper
limit
being
approached
as
contact
wipe
approaches
the
minimum
.
Circuit
Breaker
Operation
,
Contact
Adjustment
and
Timing
Contact
Adjustment
5
.
Contact
Sequence
Check
(
See
Fig
.
3
)
.
All
three
poles
should
touch
within
2
millisecond
at
normal
closing
speeds
.
An
oscillo
-
scope
,
oscillograph
or
other
timing
method
may
be
used
to
establish the
2
millisecond
timing
.
1
.
To
check
breaker
operation
,
the
breaker
should be
withdrawn
from
the
switchboard
,
and the
racking
screw
turned
two to
three
turns
clockwise
until
the
racking
unlocking
lever
snaps
into
the
first
position
corresponding
to
the
disconnect
position
.
Before
checking
contact
sequence
,
check
that the
contact
wipe
and air
gaps
are
correct
.
It
is
not
expected
that
the
contact
sequence
should exceed the
2
millisecond
limit
;
therefore
,
before
attempting
to
readjust
,
check
that
the
test
equipment
and
proce
-
dure
are
correct
.
Also
consider
,
especially
when
testing
with
electronic
equ
ipment
,
that
.
002
seconds
vacu urn
interrupter
contact
bounce
is
permissible
during
normal
closing
and this
bounce
can
influence
the
contact
touch
measurements
.
2
.
Fully
Closed
Breaker
Test
(
See
Fig
.
2
)
.
Charge
the
closing
springs
and
turn
the
motor
switch
(
1
)
off
.
Close
the
breaker
.
Engage
manual
charge
handle
with
charging
lever
(
3
)
.
During
the
initial
portion
of
the
downward
stroke
of
the handle
check
to
see
which direction the
closing
spring guides
move
.
If
the
spring
guides
start to
move
out
then
the
breaker did
fully
close
.
If
the
spring
guides
begin
to
move
in
and
with
additional
pumping
moves
in
until the
mechanism
can
be
heard
to
"
snap
in
"
,
then
the
breaker
did
not
fully
close
originally
.
Excess
contact
pressure
or
friction
can
cause
this condition
and
if
it
cannot
be
relieved
then
the
factory
should be
consulted
.
If
it
is
determined that the
contact
sequence
is
not
within
the
2
milliseconds
,
then
adjustment
is
required
.
Usually
,
readjustment
of
one
pole
should be
sufficient
so
that
all
three
poles
touch
within
2
milliseconds
.
The air
gap
of
the
pole
to
be
changed
should be
decreased
if
the
contacts
of
that
pole
are
touching
after
the
other
two
poles
,
or
increased
if
the
contacts
are
touching
before
the
other
two
poles
.
The air
gap
is decreased
by
turning
pushrod
(
2
)
clockwise
,
viewing
from
the
top
of
the
breaker
,
and increased
by
turning
conterclockwise
.
3
.
Contact
Wipe
(
contact
pressure
)
Check
(
See
Fig
.
3
)
.
The
contact
air
gap
and
contact
wipe
is
set at
the
factory
by setting
the
vertical
position
of
the
interrupter
(
1
)
and the vertical
position
of
the
pushrod
(
2
)
.
These
parts
should
not
be
repositioned
in
the
field
unless
a
pushrod
change
is
required
to
correct contact
sequence
as
described
elsewhere
.
Contact
wipe
is
set at
the
factory
at
.
093
minimum
.
Contact
erosion
and
wear
in
mechanical
parts
will
cause a
reduction
in
contact
wipe
over
the
life of
the
breaker and
a
check
should be
made
to
insure that
the
wipe
is
not
less
than
.
020
"
.
The
measurement
is
made
as
follows
forthe
three
poles
:
1
/
4
turn
of
the
pushrod
(
2
)
will
change
the air
gap
by
approx
.
.
019
.
After
rotating
the
pushrod
,
carefully
reposition
the
moving
contact
and
pushrod
vertically
to
align
the
pin
holes
.
Replace
the
pin
and
retainer
.
During
the
readjustment
procedure
note
that the
contact
wipe
and air
gap
dimensions
,
specified
previously
,
must
be
maintained
.
No
more
than
1
/
2
turn
total
of
the
pushrod
should be
required
when
readjusting
for
contact
sequence
.
a
.
Close
the breaker
and
measure
between the
spring
base
and
nut
(
point
A
)
,
using
gage
pin
.
After
completing
the
contact
sequence
procedure
,
recheck
the
contact
wipe
and
air
gaps
.
b
.
The
measurement
with
the
breaker
open
should be
at
least
.
093
for
a
new
breaker
.
Return the
racking
screw
to
its
original
position
by turning
it
counterclockwise
approx
,
two to
three
turns
until
it
stops
.
c
.
When
contact
wipe
is
less
than
the
.
020
and
it
has been
determined that the breaker
closes
fully
and there
is
not
a
mechanical
problem
,
then
the
interrupter
should
be
re
-
placed
due
to
contact
erosion
.
Closing
and
Opening
Times
and
Speeds
After
the
operation
intervals
noted
previously
,
the
closing
and
opening
times
are
recommended
to
be
checked
by
use
of
a
cycle
counter
,
travel recorder
*
,
oscillograph
,
etc
.
to
monitor
the time
from
energizing
to
contacts
touch
or
part
.
4
.
Contact
Air
Gap
Check
(
See
Fig
.
3
)
.
The
contact
air
gap
is
set
at
the
factory
at
the
nominal
dimension
of
.
40
.
This
value
will
normally
increase
as
the
contacts
erode
.
A
check
of
the
contact
air
gap
checks that
the
breaker
does
open
fully
and
that
the
gap
is
sufficient
to
withstand the
applied
voltage
.
The
measurement
is
made
as
follows
for
the three
poles
.
*
A
potentiometer
with
mounting
support
,
used
in
conjunction
with
an
oscilloscope
or
oscillograph
,
and
instructions
are
available
on
special
orderfor
specifically
checking opening
and
closing
speeds
.
a
.
Open
the
breaker
and
discharge
the
closing
springs
.
b
.
Measure and
record the
dimension
between
the
top
sur
-
face
of
the
flex
connector
clamp
and
the lead
mounting
bracket
.
c
.
Close
the
breaker
,
measure
and
record the
same
dimen
-
sion
.
Courtesy of NationalSwitchgear.com

a
ii
it
MIPIP
ID
0
.
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.
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.
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Page
7
ASEA
BROWN
BOVERI
Latch
Engagement
(
Bite
) (
Refer
to
Fig
.
4
)
The circuit
breaker
closing
and
opening
times should be
within
the
following
time
ranges
for
normal
operation
.
The latch
engagement
adjusting
screw
(
3
)
is
located
to
the
right
of
the
right
-
hand
mechanism
housing
(
1
)
.
It
can
be
reached
easily
from
the
top
of
the circuit
breaker
.
Opening
Time
poeihgillmfi
To
adjust
the latch
(
2
)
engagement
,
proceed
as
follows
:
25
-
35
40
-
60
1
.
Backoff
adjusting
screw
(
3
)
to
assure
excessive latch
engage
-
ment
.
NOTES
:
2
.
Close
the
circuit breaker
.
1
.
Below
0
°
C
,
the
closing
times
will
increase
(
but
with
no
reduction
in
closing
force
)
;
and
opening
times
will
be
within
the limits
.
3
.
Turn
adjusting
screw
(
3
)
down
slowly
until the
latch
just
releases
,
tripping
the circuit
breaker
.
2
.
Adjustments
to
correct
speeds
,
if
found
to
be outside limits
,
are
critical
and
the
nearest
District
Office
should be
contacted
for
recommendations
.
4
.
Back
off
the
adjusting
screw
(
3
)
2
turns
.
Control
Device
(
See
Fig
.
5
)
Operating
Mechanism
The
control device
is
adjusted
before
leaving
the
factory
.
It
is
recommended that
no
attempt
be made
to
adjust
the internal
relays
and
contacts
of
this
device
in
the
field
.
If
replacement
of
the
control
device is
required
,
the close latch release
rod
(
5
)
overtravel
may
be
adjusted
as
described below
.
The various
mechanism
adjustments
described
in
the
following
sections
apply
to
all circuit
breakers covered
by
this Instruction
Bulletin
.
1
.
Back
off
on
close
latch release rod
(
5
)
and check
that the
circuit
breaker
will
not
close
by attempting
to
close
it
electrically
or
manually
pushing
up
on
close latch
release
rod
(
5
)
to
the
full
extent
of
its travel
.
2
.
Charge
the
closing springs
.
Push
up
on
close latch release
rod
(
5
)
to
the
full
extent
of
its travel
.
While
holding
the close
latch
1
.
Mechanism
Housing
2
.
Latch
3
.
Adjusting
Screw
£
2
A
/
/
5
/
IN
UZ
-
ID
1
.
ROLLER
.
CLOSE
LATCH
2
.
CHARGING CAM
3
.
ACTUATOR
.
LIMIT
SWITCH
5
.
CLOSE
LATCH
RELEASE
ROO
6
.
SPRING
.
CLOSE
LATCH RELEASE
ROD
7
.
SECONDARY
CLOSE
LATCH
8
.
PRIMARY
CLOSE
LATCH
Fig
.
4
-
Latch
Adjustment
Fig
.
5
-
Control
Device
Adjustment
Courtesy of NationalSwitchgear.com

ii
mi
nvp
lb
b
.
2
.
/
.
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Page
8
ASEA
BROWN
BOVERI
1
.
The
internal
shield
of
a
vacuum
interrupter
can
acquire
an
electrical
charge
which
is
usually
retained
even
after
the
voltage
is
removed
.
On
certain
types
of
interrupters
,
this
shield
is
attached
to
the
exposed
mid
-
band
ring
and
a
grounding
stick
should
be
used
to
discharge
the
ring
before
working
on
the
device
.
LUBRICATION
The
VHK
-
R
circuit
breakers
are
lubricated
during
factory
assem
-
bly
as
follows
:
1
.
The
primary
disconnect
contacts
have
been
lubricated
with
NO
-
OX
-
ID
special
grade
-
A
grease
manufactured
by
Sanchem
,
Inc
.
(
ABB
No
.
713222
A
,
1
Pt
.
can
)
.
2
.
Dielectric
test
voltages
higher
than
rated
voltage
,
applied
across
open
contacts
,
may
cause
a
vacuum
interrupter
to
emit
some
X
-
radiation
which
could
be
a
health
hazard
on
prolonged
exposure
at
close
range
.
Accordingly
,
even
though
the
emission
is
low
and
on
for
such
a
short
period
of
time
,
it
is
considered
appropriate
to
exercise
caution
.
2
.
All
other
mechanism
parts
,
bearings
,
pins
,
etc
.
,
have
been
lubricated
with
Anderol
757
manufactured
by
Nuodex
,
Inc
.
(
for
-
merly
Tenneco
Chemical
,
Inc
)
.
(
ABB
No
.
712994
A
,
4
oz
.
tube
)
.
Therefore
,
do
not
run
any
primary
circuit
dielectric
withstand
tests
on
isolated
interrupters
with
open
contacts
,
above
rated
voltage
unless
tost
personnel
are
adequately
shielded
or
they
are
no
less
than
six
feet
from
the
test
unit
.
If
the
grease
should
become
contaminated
or
unduly
oxidized
(
hardened
and
darkened
)
or
if
parts
are
replaced
,
any
relubrica
-
tion
should
be
done
with
the
lubricants
noted
.
NOTES
:
It
isnoted
that
NO
hazardous
X
-
radiation
is
produced
with
closed
contacts
at
any
test
voltage
or
with
open
contacts
at
rated
voltage
and
there
should
be
no
cause
for
concern
.
Further
,
if
the
breaker
is
tested
in
its
switchgear
compartment
,
the
enclosure
steel
provides
sufficient
shielding
to
protect
personnel
from
X
-
radiation
at
the
test
voltages
recommended
below
at
the
normal
distances
maintained
for
electrical
safety
.
1
.
It
is
recommended
that
the
primary
disconnects
be
maintained
by
renewing
the
grease
.
The
mechanism
should
be
periodically
inspected
for
lubrication
contamination
;
frequency
of
inspection
is
dependant
on
operating
environment
.
2
.
Do
not
use
light
oil
to
lubricate
any
mechanism
parts
.
In
emergency
situations
,
Anderol
732
may
be
used
as
a
temporary
lubricant
.
In
these
cases
,
allow
time
for
the
solvents
to
evaporate
prior
to
any
mechanical
operations
.
It
is
mandatory
that
the
breaker
undergo
thorough
lubrication
with
Anderol
757
atthe
next
maintenance
interval
.
Use
of
solvents
to
free
contaminated
lubricant
is
strictly
forbidden
without
immediate
relubrication
using
Anderol
757
.
Note
that
bearing
surfaces
must
be
repacked
and
this
will
require
disassembly
of
the
mechanism
.
Do
not
operate
circuit
breaker
without
completing
this
procedure
.
The
following
test
values
should
be
used
for
dielectric
testing
the
new
breaker
and
are
to
be
applied
for
a
one
-
minute
period
.
Deicrlptfoi
60
Hz
Primary
Circuit
19.0
kV
5
KV
3
.
The
charging
motor
is
sealed
and
no
lubrication
is
required
.
*
Secondary
Circuit
(
Control
)
1100
V
36.0
kV
Primary
Circuit
15
KV
DIELECTRIC
TESTS
1100
V
*
Secondary
Circuit
(
Control
)
It
is
recommended
that
dielectric
withstand
tests
be
made
priorto
use
and
then
at
routine
maintenance
periods
to
verify
the
integrity
of
vacuum
interrupters
.
If
,
during
the
dielectric
withstand
test
,
the
required
test
voltage
cannot
be
sustained
across
the
open
con
-
tacts
of
the
vacuum
interrupter
,
the
interrupter
is
faulty
and
must
be
replaced
.
Always
insure
that
the
contact
air
gap
is
correct
before
conducting
primary
circuit
dielectric
tests
.
Once
in
service
,
the
primary
circuit
should
be
tested
at
75
%
of
this
rating
*
lf
it
is
desired
to
make
a
dielectric
test
on
the
secondary
control
wiring
,
turn
the
spring
charging
motor
disconnect
switch
(
1
,
Fig
.
3
)
to
the
"
OFF
"
position
.
Apply
test
voltage
(
1100
V
-
AC
)
for
one
minute
to
each
of
the
secondary
disconnect
contacts
at
the
rear
of
the
circuit
breaker
.
’
*
1
>
1
*
vh
TJ
f
?
»
,
If
it
is
desired
to
make
a
dielectric
test
on
the
spring
charging
motor
,
turn
the
motor
disconnect
switch
(
1
,
Fig
.
3
)
to
the
"
ON
"
position
.
Apply
test
voltage
(
540
V
-
AC
)
for
one
m
in
ute
to
the
motor
circuit
.
<
2
.
/
-
-
:
Ol
-
a
.
\
irvare
are
:
wo
.
.
^
vfr
-
*
t
!
suwiitf
cry
*
LISA
:
r
-
*
|
•
_
.
w
i
*
i
.
i
I
.
.
J
I
.
*
»
•
Courtesy of NationalSwitchgear.com

ID
U
.
*
.
.
#
.
/
-
HU
Pago
9
MIPIP
ASEA
BROWN
BOVERI
3
.
When
the
springs
discharge
,
limit
switch
contact
"
LSb
"
closes
and
switch
contact
"
LSa
"
opens
.
ELECTRICAL
CHARACTERISTICS
OF
CONTROL
DEVICES
4
.
When
limit
switch
"
LSb
"
in
the
motor
circuit
closes
,
the
spring
charging
motor
is
energized
,
which
in
turn
recharges
the
closing
springs
.
For
operating
voltage
ranges
for
various
nominal
control
volt
-
ages
,
refer
to
Table
1
.
For
average
current
values
at
various
nominal
control
voltages
,
ref
er
to
Table
2
.
The
current
values
given
in
this
table
are
average
,
steady
state
values
and
momentary
inrush
currents
for
all
charg
-
ing
motors
and
AC
coils
are
approximately
six
to
eight
times
these
values
.
5
.
Whenthecircuit
breaker
closes
,
all
auxiliary
switch
"
b
"
contacts
open
and
all
auxiliary
switch
"
a
"
contacts
close
.
6
.
When
the
limit
switch
contact
"
LSb
"
closes
,
the
lockout
relay
coil
(
Y
)
is
energized
and
opens
lockout
relay
contact
"
Yb
"
,
which
deenergizes
the
latch
release
coil
(
X
)
.
Lockout
relay
contact
"
Ya
"
closes
,
which
seals
-
in
the
lockout
relay
coil
(
Y
)
as
long
as
the
"
close
"
contact
is
maintained
.
The
purpose
of
the
lockout
relay
coil
(
Y
)
is
to
prevent
pumping
of
the
closing
mechanism
when
closing
against
a
faulted
circuit
.
ELECTRICAL
OPERATING
SEQUENCE
Please
refer
to
the
specific
schematic
diagrams
and
other
opera
-
tional
information
furnished
with
your
order
.
7
.
After
the
breaker
has
closed
and
when
the
"
close
"
switch
is
released
by
the
operator
,
the
lockout
relay
coil
(
Y
)
is
deenergized
.
This
allows
the
normally
-
closed
lockout
relay
contact
"
Yb
"
to
close
,
and
the
normally
-
open
lockout
relay
contact
"
Ya
"
to
open
.
Figure
10
and
11
are
provided
as
typical
schematics
for
general
information
on
electrical
operation
.
DC
CLOSING
OPERATING
SEQUENCE
8
.
The
circuit
breaker
can
be
tripped
by
operation
of
the
trip
control
switch
which
energizes
the
circuit
breaker
trip
coil
(
TC
)
through
the
auxiliary
switch
"
a
"
contact
.
With
the
circuit
breaker
open
,
the
closing
springs
uncharged
,
and
the
control
power
source
energized
,
and
motor
disconnect
switch
closed
,
operation
occurs
as
follows
:
9
.
The
undervoltage
device
,
if
furnished
,
provides
a
direct
acting
lock
-
open
and
undervoltage
tripping
feature
.
This
device
must
be
energized
to
initially
close
the
breaker
,
and
also
to
maintain
the
breaker
in
a
closed
position
.
1
.
Immediately
upon
the
availability
of
control
power
,
the
spring
charging
motor
(
motor
)
is
energized
,
which
in
turn
charges
the
closing
springs
.
When
the
closing
springs
are
charged
,
limit
switch
contact
"
LSb
"
is
opened
,
and
limit
switch
contact
"
LSa
"
is
closed
.
10
.
The
latch
check
switch
,
if
furnished
,
insures
that
the
tripping
mechanism
must
be
reset
prior
to
energizing
the
closing
latch
release
coil
(
X
)
.
2
.
Operation
of
the
Close
Control
switch
energizes
the
latch
re
-
lease
coil
(
X
)
through
the
circuit
breaker
auxiliary
switch
"
b
"
contact
,
the
normally
closed
lockout
relay
contact
"
Yb
"
,
and
the
limit
switch
contact
"
LSa
"
.
The
latch
release
coil
(
X
)
releases
the
closing
latch
.
The
springs
then
discharge
to
close
the
circuit
breaker
.
11
.
The
stopping
device
switch
,
if
applicable
,
prevents
electrical
reclosing
of
the
circuit
breaker
after
a
m
anual
trip
until
the
stopping
device
has
been
manually
reset
.
Table
1
-
Operating
Voltage
Range
Undervoitage
Spring
Charging
Si
:
Motor
I
Nominal
Close
Trip
|
Control
Voltagi
|
|
Pick
-
upl
;
Maximum
Coil
Cd
3
f
Drop
-
out
48
Vdc
28
-
56
15
-
29
41
38
-
56
38
-
56
125
Vdc
70
-
140
100
-
140
38
-
75
100
-
140
105
212
75
-
150
140
-
280
250
V
dc
200
-
280
200
-
280
104
-
127
120
Vac
102
104
-
127
36
-
72
104
-
127
74
-
144
240
V
ac
204
208
-
254
208
-
254
208
-
254
Courtesy of NationalSwitchgear.com

aa
Page
10
npv
ASEA
BROWN
BOVERI
Table
2
•
Average
Current
Values
Nominal
Control
Voltage
Spring
Charging
Motor
H
.
E
.
C
.
Fuse
Close
mim
|
Urater
|
Voltage
Lockout
Colli
Coil
Coll
48
Vdc
25.0
0.3
10.7
30
3.14
0.15
125
Vdc
10.0
30
5.0
1.3
0.06
0.2
250
V
dc
30
5.0
2.2
0.65
0.03
0.1
120
Vac
10.0
4.5
30
6.5
0.40
0.5
240
V
ac
2.3
5.0
0.20
0.2
1.15
30
501
502
503
LEGEND
-
Auxiliary
Switch
Contact
Closed
When
Breaker
Is
Closed
.
b
Auxiliary
Switch
Contact
Open
When
Breaker
Is
Closed
.
Latch
Check
Switch
Contact
Closed
When
Breaker
Operating
Mechanism
Is
Reset
.
(
Option
)
LSa
Limit
Switch
Contact
Open
When
Springs
Are
Discharged
.
Closed
When
Springs
Are
Charged
.
LSb
Limit
Switch
Contact
Closed
When
Springs
Are
Discharged
.
Open
When
Springs
Are
Charged
.
Shunt
Trip
Coil
.
Control
Relay
Release
Coil
.
Control
Relay
Lockout
Coil
.
Normally
Open
Control
Relay
Contact
.
Normally
Closed
Control
Relay
Contact
.
-
Terminal
Block
Point
.
Motor
Lead
.
Coil
Lead
End
.
C
1
,
C
2
-
Terminal
Jumper
(
Control
Device
)
.
<
-
Female
Secondary
Disconnect
Contact
.
a
—
C
3
J
2
CII
4
IO
LCb
-
Y
LS
LS
b
uJ
*
a
I
5
I
3
^
C
22
'
i
3
8
IS
b
TC
-
a
zl
b
X
-
9
Y
23
2
52
Ya
Yb
I
6
'
I
O
ML
-
b
2
m
17
CE
n
lo
2
o
m
m
lo
ui
I
?
<
s
>
0
0
o
15
(
MOTOR
18
n
o
n
PI
m
m
r
rO
*
C
4
l
<
/
>
m
5
504
505
506
Figure
8
-
Typical
DC
Schematic
Diagram
Of
Control
Circuit
Courtesy of NationalSwitchgear.com