Siemens 3AFS Series Programming manual

SIEMENS
Type
-
3
AFS
Vacuum
Circuit
Breakers
Instructions
Installation
Operation
Maintenance
SG
-
3398
Courtesy of NationalSwitchgear.com

Introduction
00
THIS
EQUIPMENT
CONTAINS HAZARDOUS VOLTAGES
AND
MECHANICAL
PARTS
WHICH
MOVE
AT
HIGH
SPEED
AND
MAY
BE
CONTROLLED
REMOTELY
.
SEVERE
PERSONAL
INJURY
OR PROPERTY
DAMAGE
CAN RESULT
IF
SAFETY
INSTRUCTIONS
ARE
NOT
FOLLOWED
.
ONLY
QUALIFIED
PER
-
SONNEL
SHOULD
WORK
ON OR AROUND
THIS
EQUIPMENT
AFTER
BECOMING
THOROUGHLY
FAMILIAR
WITH
ALL
WARNINGS
,
SAFETY
NOTICES
,
AND
MAINTENANCE
PRO
-
CEDURES
CONTAINED
HEREIN
.
THE
SUCCESSFUL
AND
SAFE
OPERATION
OF
THIS
EQUIPMENT
IS
DEPENDENT
UPON PROPER
HANDLING
,
INSTALLATION
,
OPERATION
AND
MAINTENANCE
.
»
E
Power
circuit breakers
are
applied
at
high
voltages
and have
mechanical
parts
which
move
at
high
speeds
and
will
cause
death
,
personal
injury
and
property
damage
.
To
avoid
injuries
due
to
electrical shock
,
burns
,
and
entanglement
in
moving
parts
,
this
equipment
must
be
installed
,
operated
,
and
maintained
only
by
qualified
persons
thoroughly
familiar
with
the
equipment
,
in
-
struction
manual and
drawings
.
Qualified
Person
Field
Service
Operation
For
the
purpose
of
this
manual
and
on
product
labels
,
a
qualified
person
is
one
who is
familiar
with
the
installation
,
construction
and
operation
of
the
equipment
,
and
the
hazards
involved
.
In
addition
,
he has
the
following
qualifications
:
(
a
)
Is trained
and
authorized
to
enegize
,
de
-
energize
,
clear
,
ground
and
tag
circuits
and
equipment
in
accordance
with
established
safety
practices
.
(
b
)
Is
trained
is
the
proper
care
,
and
use
of
protective equip
-
ment
such
as
rubber
gloves
;
hard
hat
,
safety
glasses
or
face
shields
,
flash
clothing
,
etc
.
,
in
accordance
with
established
safety
practices
.
Siemens
can
provide
competent
,
well
-
trained Field
Service
Representatives
to
provide
technical
guidance
and
advisory
assistance
for
the
installation
,
overhaul
,
repair
and maintenance
of
Siemens
equipment
,
processes
and
systems
.
Contact
regional
service
centers
,
sales
offices
or
factory
for
details
.
Signal
Words
Distinctive
signal
words
(
DANGER
,
WARNING
,
CAUTION
)
are
used
in
this
instruction
book
to
indicate
degrees
of
hazard that
may
be
encountered
by
the
user
.
These
signal
words
are
defined
below
.
DANGER
Indicates death
,
severe
personal
injury
or
substantial
property
damage
will
result
if
pro
-
per
precautions
are
not
taken
.
WARNING
Indicates
death
,
severe
personal
injury
or
substantial
property
damage
can
result
if
pro
-
per
precautions
are
not
taken
.
CAUTION
Indicates
minor
personal
injury
or
property
damage
can
result
if
proper
precautions
are
not
taken
.
Courtesy of NationalSwitchgear.com

Contents
02
Table
of
Contents
Introduction
Introduction
Table
of
Contents
Table
of
Illustrations
General
Introduction
Receiving
"
As
Found
"
Tests
Storage
Installation
Checkout
Technical
Data
Rating
Plate
Content
Rating
Summary
Breaker
Type
Service
Conditions
General
Performance
Data
.
.
.
.
Interrupter
/
Operator
-
Description
Description
—
General
Description
and
Operation
Construction
Breaker
Pole
Current
-
Path
Assembly
Vacuum
Interrupter
The
Arc
-
Quenching
Principle
.
Switching
Operation
Operating
Mechanism
Construction
Indirect
Releases
Motor
Operating
Mechanism
.
Auxiliary
Switch
Mode
of
Operation
Charging
Closing
Interrupter
/
Operator
(
con
’
t
)
Trip
Free
Operation
Opening
Rapid
Auto
-
Reclosing
Manual
Operation
Manually
Charging
The
Closing
Spring
Manual
Closing
Manual
Opening
Elementary
Diagram
Indirect
Releases
Shunt
Release
Undervoltage
Release
Construction
and
Mode
of
Operation
..
Interrupter
/
Operator
-
Maintenance
General
Inspection
Checklist
Hand
Tools
Recommended
General
Metric
English
Minimum
Maintenance
Schedule
Lubrication
of
the
Operating
Mechanism
Hydraulic
Shock
Absorber
Vacuum
Interrupters
Life
Expectancy
Contact
Erosion
Interrupter
Vacuum
Check
-
Mechanical
.
High
Potential
Testing
and
Electrical
Interrupter
Vacuum
Check
Vacuum
Tube
Replacement
Solenoid
Replacement
Operational
Check
Warranty
13
00
13
02
13
03
14
14
3
18
3
18
4
18
4
19
5
19
19
6
20
7
7
21
7
21
8
21
21
9
21
9
21
9
22
9
22
9
24
9
9
24
10
24
12
25
12
12
26
.
12
27
12
30
12
30
12
31
13
NOTE
The
instructions
contained
within
this
manual
are
necessary
for
the
safe
installation
,
maintenance
and
operation
of
this
equip
-
ment
.
If
this
manual
is
misplaced
or
lost
,
replacement
manuals
are
available
through
the
local
Siemens
sales
office
.
These
instructions
do
not
purport
to
cover
all
details
or
.
variations
in
equipment
,
nor
to
provide
for
every
possible
contingency
,
to
be
met
in
connection
with
installation
,
operation
or
maintenance
.
Should
further
information
be
desired
or
should
particular
problems
arise
which
are
not
covered
sufficiently
for
the
purchaser
'
s
purposes
,
the
matter
should
be
referred
to
the
local
Siemens
office
.
THE
CONTENTS
OF
THIS
INSTRUCTION
MANUAL
SHALL
NOT
BECOME
PART
OF
OR
MODIFY
ANY
PRIOR
OR
EXISITNG
AGREEMENT
,
COMMITMENT
OR
RELATIONSHIP
.
THE
SALES
CONTRACT
CONTAINS
THE
ENTIRE
OBLIGATION
OF
SIEMENS
.
THE
WARRANTY
CONTAINED
IN
THE
CONTRACT
BETWEEN
THE
PARTIES
IS
THE
SOLE
WARRANTY
OF
SIEMENS
.
ANY
STATEMENTS
CONTAINED
HEREIN
DO
NOT
CREATE
NEW
WARRANTIES
OR
MODIFY
THE
EXISTING
WARRANTY
.
If
drawings
or
other
supplementary
instructions
for
specific
applications
are
forwarded
with
the
manual
or
separately
,
they
take
precedence
over
any
conflicting
or
incomplete
information
in
this
manual
.
Courtesy of NationalSwitchgear.com

Contents
03
Table
of
Illustrations
1
Figure
Figure
Figure
2
.
Figure
3
.
Figure
4
.
Figure
5
.
Figure
6
.
Figure
7
.
Figure
8
.
Figure
9
.
Figure
10
.
Figure
11
.
Figure
12
.
Figure
13
.
Figure
14
.
Typical Elementary Diagram
Figure
15
.
Construction
of
Shunt
Release
Figure
16
a
.
Latch
Detail
Shunt
Release
Figure
16
b
.
Latch Detail
Undervoltage
Release
Figure
16
c
.
Undervoltage Blocking
Feature
Figure
17
.
Operator
Lubrication Points
Figure
18
.
Typical
Primary
Interrupter
Contact
Life
Curves
Figure
19
.
Contact
Erosion
Check
Figure
20
a
.
Lower
Pole
Support
with
Insulated
Coupler
Figure
20
b
.
Primary
Contact Closed
-
Free
Position
Figure
20
c
.
Primary
Contact
Forced
Open
by
Manual
Pressure
Figure
21
.
Vacuum
Tube
Replacement
Illustration
Figure
22
.
Illustration
Showing
Required
Technique
for
Fastening
Terminal
Clamp
Hardware
1
a
.
Type
3
AFS
Vacuum
Circuit
Breaker
Front View
1
b
.
Type
3
AFS
Vacuum
Circuit
Breaker
Rear View
Rating
Plate
Typical
Innterrupter
/
Operator
Assembly
Section
Through
a
Vaccum
Breaker Pole
Section
Through
a
Typical
Vacuum
Interrupter
Section
Through
the
Typical
Vacuum
Breaker
Operating
Mechanism
Closed
Position
-
Closing Springs
Discharged
Details
of
Closing
Spring Charging
Components
-
Closing
Springs
Discharged
Operating
Mechanism
Open
Position
-
Closing
Springs
Discharged
Breaker
Shaft
in
Open
Position
-
Closing Springs
Discharged
Operating
Mechanism
Section
Diagrams
:
a
,
b
,
c
.
d
Operator
Sequential
Operation
Diagram
Front View
of
Mechanism Enclosure
Arranged
for
Manual
Operation
2
6
10
11
11
11
12
13
14
14
15
-
16
17
18
19
20
20
20
20
23
24
25
25
26
26
28
29
7
Table
1
.
Table
2
.
Table
3
.
Table
4
.
Table
5
.
Table
6
.
Table
7
.
Rating
Summary
&
Weights
Altitude
Correction
Factors
Operating
Times
Closing
and
Tripping
Solenoid Characteristics
Spring
Charging
Motor
Characteristics
Auxiliary
Switch
Ratings
Maintenance
Intervals
7
8
8
8
8
22
Copyright
1988
-
Siemens
Energy
&
Automation
Courtesy of NationalSwitchgear.com

General
Page
1
Figure
1
a
.
Type
3
AFS
Vacuum
Circuit
Breaker
—
Front
View
.
Courtesy of NationalSwitchgear.com

General
Page
2
Figure
1
b
.
Type
3
AFS
Vacuum
Circuit
Breaker
—
Rear
View
.
Courtesy of NationalSwitchgear.com

General
Page
3
Introduction
Receiving
The
3
AFS
series
of
vacuum
circuit breakers
are
precision
built
devices
designed
to
function
efficiently
under normal
operating
conditions
.
They
are
designed
and
manufactured
to
operate
within
the
ANSI
C
37
standards
for
“
Indoor
”
oiless circuit
break
-
ers
.
Performance
requirements
of
these
standards
are
met
or
exceeded
by
these
designs
.
Type
3
AFS
vacuum
circuit breakers
are
shipped
from
the
fac
-
tory
completely
assembled
,
inspected
and
tested
.
Immediately
upon
receipt
of
the
circuit
breakers
,
check
each item
with
the
shipping
manifest
and make
an
examination
for
evidence
of
any
damage
that
may
have
occurred
during
shipment
.
If
any
shortage
,
damage
or
indication
of
rough
handling
is
found
,
immediately
call it
to
the
attention
of
the
local
freight
agent
handling
the
shipment
.
Proper
notation
should be
made
by
him
on
the
freight
bill
.
This
prevents
any
controversy
when
claim
is
made
and
facilitates
adjustment
.
Also
,
immediately
file
a
damage
claim
with the
transportation
company
and
notify
the
nearest
Siemens
representative
.
Specific
Standards
which
apply
include
:
IEEE
Standard
Rating
Structure
Preferred
Rating
and
Related
Required
Capabilities
IEEE
Standard
Test Procedures
IEEE
Standard
Application
Guide
C
37.04
C
37.06
C
37.09
C
37.010
The
successful
performance
and
application
of
these
vacuum
circuit breakers
depends
as
much
on
proper
installation
and
maintenance
as
it
does
on
good design
and
careful
manufacture
.
NOTE
Damage
claims
must
be
processed
within
the time
period
specified
by
the
carrier
.
Siemens
cannot
be
held
responsible
for
shipping damage
,
either
exter
-
nal
or
internal
,
if
the
inspection
is
not
made
and claim
forwarded
within
the
set
time
limit
.
The instructions
included
in
this
book
are
necessary
for
safe
in
-
stallation
,
maintenance
and
operation
and
are
provided
to
aid
you
in
obtaining
longer
and
economical service
from
your
Siemens
Circuit
breakers
.
For
proper
installation and
operation
—
resulting
in
better
service
and lower
maintenance
costs
—
this
information
should
be
distributed
to
your
operators
and
engineers
.
Check
and
examine
upon
receipt
and
report
any
problems
as
indicated above
.
Carefully
remove
the
packaging
using
the
correct
tools
.
The
circuit
breakers
may
be
carefully
lifted
using
the
lift
holes
on
the
upper
rear
side
of
the
operator
housing
.
See
table
1
for
weights
.
Care
should
be taken
not
to
damage
the
insulators
or
circuit breaker
during
lifting
or
moving
operations
.
By
carefully
following
these
instructions
,
difficulties
should
be
avoided
.
However
,
they
are
not
intended
to
cover
all details
or
variations
that
may
be encountered
in
connection
with
the
in
-
stallation
,
operation
and
maintenance
of
this
equipment
.
Should
additional
information
be
desired
,
including
replacement
instruction
books
,
contact
your
Siemens
representative
.
Courtesy of NationalSwitchgear.com

General
Page
4
“
As
Found
”
Tests
When
the
circuit
breakers
are
received
perform
and record
"
As
Found
’
insulation
tests
using
megger
or
Doble
tests
to
give
an
initial
value
for future
comparative
indication
of
insulation
change
.
Contact
resistant
tests
can
also be
made
using
a
ductor
.
This
is
recommended
for
all
new
circuit
breakers
especially
if
they
are
to
be stored
for
extended
periods
as
they
may
absorb
moisture and
contaminants
.
This should also
be
done
after
storage
and
prior
to
placing
breakers into
service
.
Changes
in
values between
subsequent
tests
should
be evaluated and
cor
-
rective action
taken where
needed
.
With
the breaker
open
,
check
each
phase
across
the
open
con
-
tacts
by
connecting
from
the
upper
(
27
)
to
the
lower
(
29
)
primary
disconnect
.
With
the
circuit
breaker
closed
,
check
phase
-
to
-
phase
and
each
phase
-
to
-
ground
.
b
.
A
60
HZ
dielectric
test
on
secondary
and
control
circuits
should be
made
at
1125
volts
(
1500
x
75
%
)
for
one
minute
.
NOTE
Certain
control
devices such
as
,
charging
motors
,
pushbuttons
,
bell
alarms
,
etc
.
,
may
have
only
a
900
volt
rating
.
75
%
of
900
V
would
allow
a
field
Hi
-
POT
of
only
675
volts
AC
.
Since
wide variations
can
occur
in
insulation values and
con
-
tact
resistance because
of
atmospheric
conditions
,
comtamina
-
tion
and
type
of
test
equipment
,
discrete values
cannot
be
given
.
However
,
making
and
recording
these
test
on
new
equipment
,
and
again
at
regular
intervals
,
will
give
a
comparative
indica
-
tion
of
insulation
and
/
or
contact
resistance
change
.
Maintain
-
ing
a
permanent
record
of
these values
for
each
circuit breaker
should
be
part
of
the
Maintenance
Program
.
c
.
If
dersired
,
contact
resistance
tests
can
be
made
using
a
ductor
.
d
.
Make
a
permanent
record
of
all
test
performed
.
Storage
NOTE
-
If
storage
is
necessary
,
“
As Found
”
tests
are
recommended
prior
to
and
after
storage
for
comparison
.
For
storage
,
the
circuit breakers
should
be
kept
indoors
in
a
clean
dry
location
where
they
will
not
be
exposed
to
such
items
as
dirt
,
construc
-
tion dust
,
corrosive
atmospheric
mechanical
abuse
or
rapid
temperature
variation
.
If
stored
in
their
cubicles
,
space
heaters
or
similar
heat
source
should
be
used
to
prevent
condensation
.
Before
testing
,
review the
procedures
and
safety
precautions
indicated
in
the section
‘
High
Potential
Testing
and Electrical
Interrupter
Vacuum
Check
’
,
page
29
.
a
.
Insulation
resistance
test
should be made
to
verify
the
in
-
sulation
integrity
.
These
can
include
megger
or
Doble
tests
.
If
possible
,
a
high
-
potential
test
should be
made
for
one
minute
at
:
RATED
VOLTS
(
MAX
.
)
4.76
kV
8.25
kV
15.10
kV
Outdoor
storage
of
circuit
breakers
is
not
recommended
.
If
breakers
must
be stored
outdoors
,
they
must
be
completely
covered and
protected
from
the
elements
.
A
heat
source
must
be
provided
to
prevent
condensation and
subsequent
corro
-
.
sion
.
Often
500
watts
heat
per
breaker
is
used
.
Covering
should
allow
for
ventilation
.
TEST
VOLTAGE
A
.
C
.
D
.
C
.
14
,
000
27
,
000
27
,
000
20
,
000
38
,
000
38
,
000
It
is
recommended
that
periodic
inspections
of
the
breakers
be
made
during
storage
and
if
necessary
,
procedures
adjusted
to
keep
the
breakers
in
proper
condition
.
Courtesy of NationalSwitchgear.com

General
Page
5
Installation
Checkout
The
following
agenda
provides
a
convenient
check
list
of
activ
-
ities
to
be
performed
while
preparing
the
circuit
breaker
for
use
.
10
.
If
of
drawout
design
,
the
breaker
should
be
inserted
into cell
to
the Test
/
Disconnect
position
.
11
.
Ensure
that
secondary
disconnects
are
fully
engaged
.
A
DANGER
h
12
.
Re
-
energize
control
power
.
Stored
energy
springs
should
automatically charge
.
Close
and
trip
the breaker electri
-
cally
.
Observe
that
the
breaker
operates
properly
and the
stored
energy
motor
recharges
after
the
close
operation
.
Hazardous
voltages
and
high
speed
mechanical
parts
will
cause
death
or severe
personal
injury
and
property
damage
.
Read
instruction
manual
,
observe
safety
in
-
structions
and
use
qualified
personnel
.
13
.
Move breaker
to
fully
connected
position
on
a
de
-
energized
bus
.
Close
and
trip
breaker
from
main
control
position
.
14
.
If
a
lock
-
out
key
interlock
position
has been
provided
in
the
cubicle
,
place
the
interlock
in
the
breaker
“
Trip
-
Free
”
posi
-
tion
,
key
removed
,
and
perform
a
close
operation
.
Check
that
the
breaker
has
gone
trip
free
.
Open
the
interlock
“
key
held
’
’
position
and
repeat
the
closing
trial
.
The breaker
now
should
successfully
close
.
1
.
Carefully
remove
the
packaging
using
proper
tools
.
Vac
-
uum
breakers
are
normally
supplied
with
their
primary
con
-
tacts
open
and
stored
energy
springs discharged
.
Press
trip
(
54
)
,
close
(
53
)
,
and
again
trip push
buttons
to
confirm
this is
true
.
Refer
to
“
Receiving
”
section
for
lifting
alternatives
.
15
.
The
breaker
should
now
be
ready
for
service
.
2
.
Carefully
note
and check
rating
plate
(
51
)
per
Figure
2
to
ensure
maximum
voltage
,
continuous
current
,
interruption
rating
,
and
control
voltages
are
compatible
with
the
system
into which
the
breaker is
to
be
applied
.
A
DANGER
H
Hazardous
Voltages
Associated
with
the
ap
-
plication
of
this
breaker
will
cause
death
,
per
-
sonal
injury
,
and
property
damage
.
Before
proceeding
with
the
initial circuit
breaker insertion
and
racking
to
the
bus
,
be
certain the bus
is
de
-
energized
.
3
.
Perform
a
careful
visual
inspection
noting
any
damage
which
may
have
occurred
in
shipment
.
Clean
all
dust
,
dirt
and
foreign
materials
accumulated
in
shipment
.
4
.
Using
procedures
described
in
the maintenance section
of
this
manual
,
carry
out
a
vacuum
check
.
5
.
Complete
a
manual
spring
charge
,
close and
trip
operation
.
A
WARNING
6
.
Reinstall
any
barriers removed
during
inspection
.
7
.
Connect
control
power
to
breaker
.
Upon
energizing
control
power
,
closing
springs
should
automatically
charge
.
Then
close and
trip
the circuit
breaker
electrically
.
H
A
fully
connected
breaker controls
high
voltage
and
currents
.
Improper
use
can
cause
death
,
personal
injury
or
property
damage
.
Perform
initial
racking
to
connect
position
on
de
-
energize
bus
.
If
an
energized
bus
is
unavoidable
obtain
appropiate
clearances
before
beginning
the
next two
steps
.
8
.
Perform
and record
results
of
the
“
As
Found
”
tests
.
Com
-
pare
with
pre
-
storage
“
As
Found
”
test
values
if
stored
.
9
.
De
-
energize
control
power
.
Press
trip
(
red
)
,
then close
(
black
)
and
then
trip pushbuttons
to
confirm
breaker
is
open
and
springs discharged
.
Courtesy of NationalSwitchgear.com

Technical
Data
Page
6
Rating
Plate
Content
Type
Designates
circuit
breaker
model
number
and
broadly
identifies
application
in
terms
of
maximum
voltage
and
interruption
capability
.
Rated
continuous
current
is
the
disignated
limit
of
current
in
RMS
amperes
at
rated
frequency
which the breaker
may
be
ex
-
pected
to
carry
without
exceeding
temperature
limitations
.
The
highest
RMS
voltage
above
nominal
system
voltage
for
which
the
circuit
breaker
is
designed
,
and is
the
upper
limit
for
operation
.
The ratio
of
rated
maximum
voltage
to
the
lower
limit
of
the
range
of
operating
voltage
in
which the
required
symmetrical
and
asymmetrical
interrupting
capabilities
vary
in
inverse
proportion
to
operating
voltage
.
The rated
full
wave
impulse
withstand
voltage
.
The
crest
value
of
a
standard
1.2
x
50
impulse
voltage
wave
which
a
new
circuit
breaker
must
be
capable
of
with
-
standing
without
flashover
or
puncture
during
design
tests
.
The
symmetrical
component
of
short
-
circuit
current
in
RMS
amperes
which
the
breaker
may
be
expected
to
interrupt
.
The maximum
making
current
into which
the circuit
breaker
may
be
expected
to
close and latch
.
The
maximum
permissible
interval
bet
-
ween
energizing
the
trip
circuit
at
rated
control
voltage
and
the
interruption
of
the
main
circuit
in
all
poles.
Rated
frequency
is
the
sinusoidal
per
-
iodicity
at
which
the
circuit
breaker
is
designed
to
operate
.
An
elementary
diagram
providing
detailed
information
regarding
electrical
function
and
wiring
within
the
circuit
breaker
.
Close
(
Solenoid
)
Volt
Required
range
of
control
voltage
applied
to
the
closing
solenoid which
will
ensure
successful
release
of
the
closing
spring
.
The
effective
value
of
current
required
at
nominal control
voltage
when
applied
to
the
spring
release
solenoid
.
Range
Amps
Amps
Nominal
Trip
(
Solenoid
)
Volt
Required
range
of
control
voltage
applied
to
the
tripping
(
opening
)
solenoid
which
will
ensure
a
successful
tripping
operation
.
Effective
value
of
current
required
at
nominal
control
voltage
when
applied
to
the
tripping
(
opening
)
solenoid
.
Reference
to
the
instruction
manual
ap
-
plicable
to
the
circuit breaker
by
publica
-
tion
number
.
Weight
in
pounds
of
the
complete
circuit
breaker
assembly
.
Specifically
identifies
an
individual breaker
and
affords
traceability
to test
records
and
manufacturing
dates
.
The
month
and
year
within
which the
cir
cuit breaker
was
manufactured
.
Rated
Max
Volts
kV
Range
Amps
Nominal
Volt
Range
Factor
(
K
)
Manual
LBS
BIL
kV
Serial
No
.
Date
Mfg
.
Rated
Short
Circuit
kA
Close
&
Latch
kA
SIEMENS
Raleigh
,
NC
A
.
C
.
High Voltage
Circuit
Breaker
Inter
Time
Cyc
.
TYPE
RATED
MAX
VOLTS
kV
RATED
SHORT
CIRCUIT
kA
AMPS
_
VOLTAGE
RANGE
.
FACTOR
K
CLOSE
&
LATCH
kA
BIL
kV
INTER
TIME
CYC
Hz
WIRING
DIAGRAM
Hz
VOLTS
RANGE
VOLTS
RANGE
VOLTS
RANGE
AMPS
NOMINAL
AMPS
NOMINAL
AMPS
NOMINAL
Wiring
Diagram
MOTOR
CLOSE
Motor
(
Spring
Charging
)
TRIP
Volt
Range
of
control
voltages
required
to
serve
the
motor
which
stores
energy
in
the
closing
springs
.
MANUAL
LBS
.
Range
DATE
MFG
.
SERIAL
NO
.
Amps
Nominal
Effective
value
of
current
required
at
nominal
control
voltage
when
applied
to
the
serve
the
motor
which
stores
energy
in
the
closing
springs
.
Made
in
USA
18
-
658
-
024
-
331
Figure
2
.
Rating
Plate
Courtesy of NationalSwitchgear.com

Technical Data
Page
7
Rating
Summary
Breaker
Type
Type
-
3
AFS
-
circuit breaker
designations
are
normally
arranged
in
the
following
format
,
with
significance
of
each
ele
-
ment
indicated
:
1
.
Breaker
Type
2
.
Maximum
Voltage
,
kV
3
.
Continuous
Current
,
AMPS
4
.
Power
System
Frequency
,
Hz
5
.
Rated
Short Circuit
Current
,
kA
6
.
Voltage Range
Factor
K
7
.
Interruption
Time
,
Cycles
60
Hz
8
.
Rated
Withstand
Test
Voltage
—
Low
Frequency
kV
rms
9
.
Rated
Withstand Test
Voltage
—
Impulse
kV
crest
10
.
Closing
and
Latching
Capability
(
C
&
L
)
,
kA
VV
-
3
AFS
-
MMMM
-
AAAA
-
CC
(
e
.
g
.
:
15
-
3
AF
-
1000
-
1200
-
77
)
VV
—
General
voltage
class
3
AFS
—
Circuit
Breaker
Design
(
stationary
)
MMMM
—
Nominal
mVA
rating
followed
by
alphabetic
model
reference
AAAA
—
Continuous Current
Rating
CC
—
Close
and
Latch
Capability
Table
1
.
Rating
Summary
and
Weights
Weights
,
Approximate
Pounds
Kilograms
Withstand
-
kV
Cycles
Low
Freq Impulse
Rating
C
&
L
K
Type
Vmax
kV
AMPS
Hz
I
Freq
I
sc
Int
t
.
kA
10
9
6
7
8
Numberl
2
3
5
4
255
115
5
-
3
AFS
-
250
5
-
3
AFS
-
250
5
-
3
AFS
-
350
5
-
3
AFS
-
350
5
-
3
AFS
-
350
7
-
3
AFS
-
500
7
-
3
AFS
-
500
7
-
3
AFS
-
500
15
-
3
AFS
-
500
15
-
3
AFS
-
500
15
-
3
AFS
-
750
15
-
3
AFS
-
750
15
-
3
AFS
-
750
15
-
3
AFS
-
1000
15
-
3
AFS
-
1000
15
-
3
AFS
-
1000
19
58
4.76 1200
1.24
3
60
60 29
115
255
29
1.24
3
19
60
58
4.76 2000 60
320
145
60
4.76
1200
60 1.19
3
19
78
41
320
145
78
41
’
1.19
3
19 60
4.76 2000 60
375
170
78
4.76
3000
1.19
3
19 60
60
41
140
310
66
8.25
1.25
3 36
95
1200
60
33
310
140
66
8.25
2000 1.25
3 36
95
60
33
170
375
8.25
3000
1.25
3
36
95 66
60
33
110
245
37
15.0 1200
1.30
3
95
60 18
36
125
275
1.30
95
37
15.0 2000 60 18
3 36
310
140
58
15.0 1200
1.30 3
95
60 28
36
140
310
2000
1.30 3
95 58
15.0 60 28
36
375
170
1.30
3
95
58
15.0
3000
60 28
36
320
145
15.0 1200 60
1.30
3
95
77
37 36
320
145
15.0
2000
1.30
3
95
77
60
37
36
175
385
15.0
3000
1.30
3
95
77
60
37
36
The
values
of
insulation level
compiled
in
Table
1
arejeferred
to
sea
level
in
accordance
with
ANSI C
37.04
-
1979
consolidated
standards
.
The
higher
the
site altitude
,
the
lower the
insulating
capacity
of
the air
.
The
decrease
in
insulating
capacity
is
neglected by
standards
for
altitudes
of
up
to
3300
ft
.
(
1000
m
)
above
sea
level
.
For
higher
altitudes
,
the values
of
low
-
frequency
withstand
voltage
,
impulse
withstand
voltage
and
rated
con
-
tinuous
current
must
be
corrected
in
accordance
with
Table
1
.
Table
2
.
Altitude
Correction
Factors
,
k
Service Conditions
The
following
parameters
define
the
usual service
conditions
under which the circuit
breakers shall
be
considered suitable
for
operating
at
their
standard
ratings
.
Conditions
of
use
beyond
these limits
must
be
given
special
consideration
,
consultation
with
the
factory
or
reference
to
the
IEEE
Application
Guide
,
ANSI
C
37.010
.
r
If
)
Maximum Ambient
Temperature
=
40
C
(
104
F
)
Minimum
Amibent
Temperature
=
-
30
C
(
-
22
F
)
3300
Feet
(
1000
meters
)
Unusal
service conditions which
expose
the
equipment
to
dust
,
steam
,
salt
spray
,
corrosive
gases
,
dripping
water
,
vibration
,
shocks
,
high
and
low
temperatures
,
high
altitude
and
the
like
may
require
special
construction
.
Refer
concerns
to
the
factory
.
Altitude
Rated
Continuous
Current
Rated
Voltage
Insulation
Levels
o
ft
.
(
m
)
NP
Altitude
=
3300
(
1000
)
(
1500
)
(
3000
)
1.00
1.00
0.99
5000
0.95
0.80 0.96
10000
NOTE
:
Interpolated
correction
factors
shall be used
in
determining
factors
for
intermediate altitudes
.
Courtesy of NationalSwitchgear.com

Technical Data
Page
8
General
Performance
Data
Table
3
.
Operating
Times
-
Typical
Values
Table
5
.
Typical
Spring
Charging
Motor
Characteristics
Characteristic Control
Voltages
ANSI
C
37.06
Tbl
.
10
Current
Amps
Charge
Time
Seconds
Cycles
60
Hz
ms
Closing
Time
Opening
Time
Arcing
Time
at
60
Hz
Interrupting
Time
4.5
75
48
VDC
125
VDC
250
VDC
120
VAC
60
Hz
240
VAC
60
Hz
8
10
2.0
33
6
8
1
15
8
3
3
50
6 8
3
8
Table
4
.
Typical
Closing
and
Tripping
Solenoid Charateristics
Control
Voltages
ANSI
C
37.06
Tbl
.
Trip
Coil
Amps
Ohms
Amps
Close Coil
Table
6
.
Auxiliary
Switch
Ratings
Ohms
48
VDC
125
VDC
250
VDC
120
VAC
60
Hz
240
VAC
60
Hz
23
2.1 2.4
20.0
Characteristic
Rating
121
1.0
23
5.4
Maximum
Operating
Voltage
Continuous Current
,
Max
.
Making
Current
,
Max
.
Breaking
Capacity
Resistive
Load
DC
or
AC
Inductive
Load
at
220
VDC
(
L
/
R
=
20
ms
)
500
V
487
0.5
121
2.1
10
A
121
0.9
23
4.7
30
A
487 0.4
121
1.8
1200
VA
4
750
VA
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
9
Description
—
General
The
type
3
AFS
breakers
are
of
stationary
construction
.
The
three
vacuum
interruptors
,
primary
insulators
and
operating
mechanism
comprise
a
unitized
"
interrupter
/
operator
”
assembly
(
Figure
3
)
.
Current
-
Path
Assembly
The
current
-
path
assembly
consists
of
the
upper
terminal
angle
,
(
27.1
)
and
pole
support
.
(
20
)
,
the
stationary
contact
,
(
31
)
and
the
moving
contact
,
(
36
)
,
which
is
connected
with
the
lower
terminal
,
(
29
)
,
by
terminal
clamp
,
(
29.2
)
,
and
a
flexble
shunt
,
(
29.1
)
.
Vacuum
Interrupter
The
moving
contacts
’
,
(
36
)
,
motion
is
aligned
and
stabilized
by
guide
bushing
,
(
35
)
.
tjhe
metal
bellows
,
(
34
)
,
follows
the
travel
of
contact
,
(
36
)
,
and
seals
the
interrupter
against
the
surrounding
atmosphere
.
Arc
-
Quenching
Principle
When
the
contacts
separate
,
the
current
to
be
interrupted
initiates
an
ionized
metal
vapor
arc
discharge
and
flows
through
this
plasma
until
the
next
current
zero
.
The
arc
is
then
extinguished
and
the
conductive
metal
vapor
condenses
on
the
metal
surfaces
of
the
arching
chamber
,
(
33
)
,
(
Fig
.
6
)
within
a
matter
of
micro
-
seconds
.
As
a
result
,
the
dielectric
strength
in
the
increasing
contact
gap
builds
up
very
rapidly
.
The
ensuing
descriptive
material
will
discuss
the
vacuum
inter
-
rupter
/
operator
mechanism
assembly
in
detail
.
Description
and
Operation
The
interrupter
/
operator
mechanism
assembly
consists
of
the
three
breaker
poles
,
each
with
its
vacuum
interrupter
,
mounted
on
the
common
motor
or
hand
charged
spring
stored
energy
operating
mechanism
housing
.
This
assembly
is
shown
in
figure
3
.
Construction
The
construction
characteristics
of
all
vacuum
circuit
breakers
can
be
seen
in
Figs
.
3
thru
6
.
The
circuit
breaker
poles
are
each
fixed
to
the
rear
of
the
operating
mechanism
housing
,
(
60
)
,
by
two
cast
-
resin
insulators
(
16
)
.
The
insulators
also
connect
to
the
upper
(
20
)
and
lower
(
40
)
pole
supports
which
in
turn
support
the
ends
of
the
vacuum
interrupter
(
30
)
.
Where
required
by
dielect
-
ric
requirements
,
assemblies
are
fitted
with
phase
barriers
(
80
)
.
Below
a
limit
of
about
10
,
000
amperes
,
the
arc
is
distributed
across
the
contacts
and
the
arc
is
easily
interrupted
.
At
currents
larger
than
about
10
,
000
amperes
the
arcs
own
electomagnetic
forces
cause
the
arc
to
contract
to
essentially
a
point
arc
.
If
the
contracted
arc
is
allowed
to
remain
stationary
,
it
overheats
the
contacts
at
the
arc
roots
to
the
point
where
the
molten
metal
vapor
does
not
allow
the
dielectric
to
rebuild
during
the
current
zero
and
large
magnitude
currents
could
not
be
interrupted
.
The
pole
supports
are
aluminum
castings
on
all
circuit
breaker
ratings
,
except
for
3000
A
continuous
current
where
copper
castings
are
used
and
on
the
15
-
3
AFS
-
500
,
1200
A
where
formed
steel
pole
supports
are
used
.
The
contacts
are
designed
so
that
a
self
-
generated
field
causes
the
arc
to
travel
around
the
contacts
.
This
prevents
local
overheating
while
interrupting
large
magnitudes
of
short
circuit
current
.
The
pole
support
terminals
,
(
27
)
and
(
29
)
each
receive
primary
stud
extentions
.
The
energy
-
storing
mechanism
adn
all
the
control
and
actuating
devices
are
installed
in
the
mechanism
housing
.
The
mechanism
is
of
the
spring
charged
stored
energy
type
and
is
mechanical
-
ly
and
electrically
trip
free
.
The
ionized
metal
vapor
arc
discharge
can
only
be
maintained
if
a
certain
minimum
current
flows
.
A
current
that
does
not
main
-
tain
this
level
may
be
extinguished
abruptly
prior
to
current
zero
.
This
chopping
current
must
be
kept
to
a
minimum
in
order
to
pre
-
vent
unduly
high
overvoltages
building
up
when
inductive
circuits
are
switched
,
the
use
of
a
special
contact
material
ensures
that
current
chopping
is
limited
to
4
-
5
Amp
.
The
close
-
open
indicator
(
58
)
closing
spring
charge
indicator
55
,
and
the
operation
counter
(
59
)
are
fitted
on
the
front
of
the
mechanism
housing
.
(
Fig
.
7
)
The
rapid
build
-
up
of
he
dielectric
strength
in
the
break
enables
the
arc
to
be
safely
extinguished
even
if
contact
separation
oc
-
curs
immediately
prior
to
current
zero
.
The
arc
drawn
inthe
vacuum
breaker
is
not
cooled
.
The
metal
vapor
plasma
is
highly
conductive
and
the
resulting
arc
voltage
only
at
-
tains
values
between
20
-
200
V
.
For
this
reason
and
because
of
the
short
arcing
times
,
the
arc
energy
developed
in
tne
break
is
very
small
.
This
also
accounts
for
the
long
electrical
life
expectan
-
cy
of
the
vacuum
interrupter
.
The
control
connector
(
68.7
)
for
the
control
and
signaling
cables
is
a
64
contact
plug
or
24
point
terminal
block
applied
internally
to
the
drawout
unit
.
(
Fig
7
)
Breaker
Pole
The
vacuum
interrupter
(
30
)
is
rigidly
connected
to
the
upper
pole
support
(
20
)
by
its
terminal
post
(
31.2
)
.
The
lower
part
of
the
inter
-
rupter
is
stablized
against
lateral
forces
by
a
centering
ring
(
28.1
)
on
pole
support
(
40
)
.
The
external
forces
due
to
switching
operations
and
the
contact
pressure
are
absorbed
by
the
struts
(
28
)
.
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
10
Descriptions
Cont
.
Legend
Figure
3
Owing
to
the
high
vacuum
(
less than
109
bar
)
in
the
interrupter
,
contact
clearances
in
the
range
of
6
to
11
mm
(
0.25
to
0.43
in
-
ches
)
are
adequate
to
attain
a
high
dielectric
strength
.
Switching
Operation
When
a
closing
command is initiated the
closing
spring
,
which
was
previously
charged
by
hand
or
by
the
motor
,
actuates
the
mov
-
ing
contact
,
(
36
)
,
through
breaker
shaft
,
(
63
)
,
lever
,
(
63.7
)
,
insulated
coupler
,
(
48
)
,
and lever
,
(
48.6
)
.
14
Cross
-
Arm
16
Post
Insulator
20
Upper
Pole
Support
27
Upper
Terminal
28
Strut
29
Lower
Terminal
30
Vacuum
Interrupter
40
Lower Pole
Support
48
Insulated
Coupler
49
Contact
Pressure
Spring
50.1
Opening
for
Hand
Crank
60
Mechanism
Housing
The
forces
that
occur
when
the action
of
the
insulated
coupler
is
converted
into
the
vertical
action
of
the
moving
contact
are
ab
-
sorbed
by guide
link
,
(
48.9
)
,
which
pivots
on
pole
support
,
(
40
)
and
eyebolt
,
(
36.3
)
.
During closing
,
the
tripping
spring
and
the
contact
pressure
springs
(
49
)
,
are
charged
and
latched
by
pawl
,
(
64.2
)
.
The
closing
spring
of
motor
-
operated
breaker is
recharged
im
-
mediately
after
closing
.
In
the
closed
state
,
the
necessary
contact
pressure
is
maintained
by
the
contact
pressure
spring
and the
atmospheric
pressure
.
The
contact
pressure
spring
automatically
compensates
for
arc
ero
-
sion
,
which is
very
small
.
When
a
tripping
command
is
given
,
the
energy
stored
in
the
trip
-
pign
and
contact
pressure
springs
is
released
by
pawl
,
(
64.2
)
.
the
opening
sequence
si
similar
to
the
closing
sequence
.
The residual
force of
the
tripping spring
arrests
the
moving
contact
,
(
36
)
,
in
the
open
position
.
Figure
3
a
.
Typical
Interrupter
/
Operator
Assembly
For
5
-
3
AFS
-
250
Figure
3
b
.
Typical
Interrupter
/
Operator
Assembly
For
15
-
3
AFS
-
500
,
1200
A
Figure
3
c
.
Typical
Interrupter
/
Operator
Assembly
For
Other
Ratings
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
11
Figure
4
.
Section
Through
A
Vacuum
Breaker
Pole
31
Stationary
contact
31.1
Washer
31.2
Stationary
Contact
Terminal
32
Insulator
33
Arcing
chamber
33.5
Vapor
Shield
34
Bellows
35
Guide
36.1
Moving
contact stem
36.2
Mechanical
coupling
36
Moving
contact
31.2
31.1
-
fc
-
32
5
i
Ul
3
_
j
1
31
—
J
33
33.5
L
36
d
m
34
35
4
36.1
36.2
—
1
L
-
IJ
i
Typical
for
I
other
ratings
Typical
for
5
-
3
AFS
-
250
b
.
a
.
Figure
5
.
Section
through
A
Typical
Vacuum
Interrupter
Figure
6
.
Section
Through
the
Typical
Vacuum
Breakers
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
12
Operating
Mechanism
(
Figures
7
thru
11
)
Construction
The
essential
parts
of
the
operating
mechanism
are
shown
in
Fig
.
7
.
Its actuation
is described
under
“
Flow
Chart
of
Operating
Mechanism
”
in
Fig
.
12
.
Indirect
Releases
(
TnpPin
9
Coils
)
The
shunt releases
convert
the electrical
tripping
pulse
into
mechanical
energy
,
it
’
s
function
being
to
release the
tripping
spring
.
The
undervoltage
release
may
be
manually
actuated
by
a
make
or a
break
contact
.
In
the
make
contact
case
,
its
coil
is shorted
out
,
built
-
in
series
resistors
limiting
the
current
.
Motor
Operating
Mechanism
The
spring
charging
motor
(
50.4
)
is bolted
to
the
charging
mechanism
gear
box
installed
in
the mechanism
housing
.
Neither the
charging
mechanism
nor
the
motor
require
any
servicing
.
Auxiliary
Switch
The
auxiliary
switch
(
68
)
is actuated
by
the
breaker
shaft
.
The
operating
mechanism
is
comprised
of
the
mechanical
and
electrical
components
required
to
:
Charge
the
closing
springs
with
sufficient
potential
energy
to
close
the
breaker
and
to store
opening
energy
in
the
trip
-
ping
and
contact
pressure
springs
.
Mechanisms
to
release
closing
and
tripping
actions
.
Means
of
transmitting
force
and motion
to
each
of
three
pole
positions
.
Operate
all these
functions
automatically
thru
electrical
charg
-
ing
motor
,
cutout
switches
,
anti
-
pumping
relay
,
release
solenoids
,
and
auxiliary
switches
.
Signal
thru indicators the breaker
status
,
(
open
,
closed
)
,
spring
condition
(
charged
or
discharged
)
and
number
of
operations
.
Mode
of
Operation
The
operating
mechanism
is
of
the
stored
-
energy
trip
free
type
,
i
.
e
.
the
charging
of
the
spring
is
not
automaticaly
followed
by
the
contacts
changing
position
,
and
the
closing
function
may
be
overridden
by
a
trip
command
at
any
time
.
When
the
stored
-
energy
mechanism
has
been
charged
,
the
in
-
stant
of
operation
can
be
chosen
as
desired
.
The mechanical
energy
for
carrying
out
an
“
open
-
close
-
open
”
sequence
for
auto
-
reclosing
duty
is
stored
in
the
closing
and
tripping springs
.
Charging
The
details
of
the
closing spring
charging
mechanism
are
shown
in
Figures
7
,
8
,
9
,
&
11
.
The
charging
shaft
,
(
62.1
)
,
is
supported
in
the
charging
mechanism
,
(
50.2
)
,
but is
not
coupled
mechanically
with
the
charging
mechanism
.
Fitted
to
it
are
the
crank
,
(
62.2
)
,
at
one
end and
the
cam
,
(
62.3
)
,
together
with
lever
,
(
62.5
)
,
at
the
other
.
When
the
charging
mechanism
is
actuated
by
hand
or
by
a
motor
,
(
50.4
)
the
flange
,
(
50.3
)
,
turns
until
the driver
,
(
50.3
.
1
)
,
locates
in
the
cutaway
part
of
cam
disc
,
(
62.3
)
,
thus
causing
the
charging
shaft
to
follow
.
The crank
,
62.2
,
charges
the
closing
spring
(
62
)
.
When this has
been
fully
charged
the
crank
actuates
the
linkage
,
(
55.1
)
,
via control
lever
(
55.2
)
for
the
“
closing spring
charged
”
indicator
,
(
55
)
,
and the
limit
switches
,
(
50.4
.
1
)
,
for
interrupting
the
motor
supply
.
At
the
same
time
,
the lever
(
62.5
)
Figure
7
.
Operating
Mechanism
Closed
Position
—
Closing
Spring
Discharged
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
13
Figure
8
.
Details
of
Closing
Charging
Components
—
Closing
Spring
Discharged
at
the
other
end
of
the
charging
shaft
is
securely
locked
by
the
latching
pawl
.
When
the
closing
spring
is
being
charged
,
cam
disc
,
(
62.3
)
,
follows
idly
,
i
.
e
.
it
is
brought
into
position
for
closing
.
action
by
trip
command
or
by
means
of
the
racking
interlocks
.
The
trip
free
coupling
rod
(
62.8
)
forms
a
link
between the
drive
lever
(
62.6
)
and
breaker
shaft
(
63
)
.
The
rigidity
of
this
link
depends
upon
a
spring
return
latch
(
62.8
.
1
)
carried
within
the
coupling
rod
.
The
spring
return
latch
is
pivotable
within
the
coup
-
ling
rod
and is
normally
positioned
to
ensure
the
couplers
rigidity
.
Link
(
62.8
.
2
)
and
trip
free
coupling
lever
(
62.8
.
3
)
cause
the
spring
return
latch
position
to
be
dependent
upon
the breaker
’
s
normal
tripping
components
and the
breaker
’
s
racking
interlock
.
Thus
,
whenever
a
trip
command is
applied
or
the breaker
is
not
in
the
fully
“
connected
”
or
test
position
,
the
trip
free
coupling
rod
is
no
longer rigid
,
effectively
decoupling
the
drive lever and breaker
shaft
.
Under these conditions
the
breaker
main
contacts
can
not
be
closed
.
Closing (
See
Fig
.
7
,
8
,
9
,
and
11
)
If
the breaker is
to
be
closed
locally
,
the
spring
is
released
by
pressing
Close
button
,
(
53
)
.
In
the
case
of
remote
control the
closing
solenoid
52
SRC
,
(
53.1
)
,
unlatches
the
closing spring
.
As
the
closing
spring
discharges
,
the
charigng
shaft
,
(
62.1
)
,
is
turned
by
crank
,
(
62.2
)
.
The
cam
disc
(
62.3
)
,
at
the
other
end
of
the
charging
shaft
actuates
the drive
lever
,
(
62.6
)
,
with
the
result
that
breaker
shaft
,
(
63
)
,
is
turned
by
lever
,
(
63.5
)
,
via the
trip
free
coupling
rod
,
(
62.8
)
.
At
the
same
time
,
the
lever
,
(
63.1
)
,
(
63.5
)
and
(
63.7
)
fixed
on
the
breaker
shaft
operate
the three
insulated
couplers
for
the
breaker
poles
.
Lever
,
(
63.7
)
,
changes
the
open
-
close indicator
over
to
open
.
Lever
,
(
63.5
)
,
charges
the
tripping spring
,
(
64
)
,
during
closing
,
and the breaker is
lat
-
ched
in
the
closed
position
by
lever
,
(
64.3
)
.
with
pawl
roller
,
(
64.3
.
1
)
,
and
by
pawl
,
(
64.2
)
.
Lever
(
63.1
)
,
actuates
the
auxiliary
switch
,
(
68
)
,
through
the
linkage
,
(
68.1
)
.
Opening
If
the breaker
is
to
be
tripped
locally
,
the
tripping
spring
(
64
)
is
released
by pressing
the
trip
button
,
(
54
)
.
In
the
case
of
an
electrical
command
being
given
,
the
tripping
solenoid
52
T
,
(
54.1
)
unlatches
the
tripping spring
(
64
)
.
The
crank
,
(
62.2
)
,
on
the
charging
shaft
moves
the
linkage
,
(
55.1
)
,
by
acting
on
the
control lever
,
(
55.2
)
.
The
“
Closing
spring
charged
”
indication is
thus
cancelled
and
,
the
limit
switches
,
(
50.4
.
1
)
,
switch
in
the control
supply
to
cause
the
closing
spring
to
recharge
immediately
.
Trip
Free
Operation
The
trip
free
coupling
rod
,
(
62.8
)
permits
the
immediate
decoupling
of
the
drive
lever
(
62.6
)
adn
breaker
shaft
,
(
63
)
to
override
closing
The
tripping
spring
turns
the
breaker
shaft
,
(
63
)
,
via
lever
,
(
63.5
)
the
sequence
being
similar
to
that
for
closing
.
Rapid
Auto
-
Reclosing
Since
the
closing spring
is
automatically recharged by
the
motor
operating
mechanism
when the
breaker
has
closed
the
operating
mechanism
is
capable
of
an
open
-
close
-
open
duty
cycle
as
required
for
rapid
auto
-
reclosing
.
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
14
Manual
Operation
Manually
Charging
the
Closing
Spring
(
Fig
.
13
)
Insert
the
hand
-
crank
,
(
50
)
,
in
hole
,
50.1
,
and
turn
it
clockwise
until
the
indicator
,
(
55
)
,
shows
Closing
spring
“
CHARGED
”
.
Electrically
operated
vacuum
breakers
can
be
operated
man
-
ually
if
the
control
supply
should
fail
.
Figure
9
.
Operating
Mechanism
Open
Position
—
Closing
Spring
Charged
Figure
10
.
Breaker
Shaft
in
Open
Position
—
Closing
Springs
Discharged
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
15
Legend
Figures
11
A
-
D
48
Insulated
coupler
53
Close
pushbutton
53.1
Closing
solenoid
,
52
SRC
53.2
Spring
release
latch
54
Trip
pushbutton
54.1
Tripping
Solenoid
,
52
T
62
Closing
spring
62.1
Charging
shaft
62.2
Crank
62.2
.
2
Spring
mounting
62.3
Cam
62.5
Lever
62.6
Drive
Lever
62.8
Trip
free
coupling
62.8
.
1
62.8
.
2
62.8
.
3
62.8
.
5
62.8
.
6
62.8
.
7
62.8
.
8
Spring
return
latch
Trip
free
link
Trip
free
lever
Push
rod
&
cam
assembly
Interlock
lever
—
push
rod
Interlock
lever
—
actuator
Trip
free
actuator
(
T
4.5
)
Breaker
Shaft
63.1
Lever
—
phase
C
63.5
Lever
—
phase
B
63.7
Lever
—
phase
A
Tripping
spring
64.2
Pawl
64.2
.
1
Trip
latch
pin
64.3
Lever
64.5
Shaft
64
63
Figure
11
a
.
Operating
Mechanism
Section
Diagram
Operating
Mechanism
Open
,
Closing
Springs
Discharged
(
Starred
items
changed
from
11
c
on
‘
Trip
’
Operation
)
(
Underlined
items
changed
from
11
b
on
‘
Closing
Spring
Discharge
’
Operation
)
Figure
11
b
.
Operating
Mechanism
Section
Diagram
Operating
Mechanism
Open
,
Closing
Springs
Charged
(
Starred
Items
Changed
From
11
d
on
‘
Trip
’
Operation
)(
Underlined
items
changed
from
11
a
on
‘
Closing
Spring
Charge
’
Operation
)
Courtesy of NationalSwitchgear.com

Interrupter
/
Operator
-
Description
Page
16
Figure
11
d
.
Operating
Mechanism
Section
Diagram
Operating
Mechanism
Closed
,
Closing
Springs
Charged
(
Callout
items
changed
from
11
c
on
‘
Closing
Spring
Charge
’
Operation
)
Figure
11
c
.
Operating
Mechanism
Section
Diagram
Mechanism
Closed
,
Closing
Springs
Discharged
(
Callout
items
changed
from
11
b
on
‘
Breaker
Close
’
Operation
)
Courtesy of NationalSwitchgear.com