Siemens SG-3118 Owner's manual

SIEMENS
Overcurrent
Trip
Devices
Instructions
Installation
Operation
Maintenance
SG
-
3118
Static
Trip
III
Courtesy of NationalSwitchgear.com

(
Safety
THIS
EQUIPMENT
CONTAINS
HAZARDOUS
VOLTAGES
.
SEVERE
PERSONAL
INJURY
OR
PROPERTY
DAMAGE CAN
RESULT
IF
SAFETY
INSTRUCTIONS
ARE
NOT FOLLOWED
.
ONLY
QUALIFIED
PERSONNEL
SHOULD
WORK ON
OR
AROUND
THIS
EQUIPMENT
AFTER
BECOMING
THOROUGHLY
FAMILIAR WITH
ALL
WARNINGS
,
SAFETY
NOTICES
,
AND
MAINTENANCE
PROCEDURES
CONTAIN
-
ED HEREIN
.
THE
SUCCESSFUL
AND
SAFE
OPERATION
OF
THIS
EQUIPMENT
IS
DEPENDENT
UPON PROPER
HANDL
-
ING
,
INSTALLATION
.
OPERATION
AND
MAINTENANCE
.
A
WARNING
h
Indicates
death
,
severe
personal
injury
or
substantial
property
damage
can
result
if
proper
precautions
are
not
taken
.
A
CAUTION
h
Indicates
minor
personal
injury
or
property
damage
can
result
if
proper
precautions
are
not
taken
.
Qualified
Person
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
energize
,
de
-
energize
,
clear
,
ground
and
tag
circuits and
equipment
in
accordance
with
established
safety
practices
.
b
.
Is trained
in
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
.
A
DANGER
h
(
Indicates death
,
severe
personal
injury
or
substantial
property
damage
will
result
if
pro
-
per
precautions
are
not
taken
.
Field
Service
Operation
Signal
Words
Siemens
Energy
&
Automation
,
Inc
.
can
provide
competent
,
well
-
trained Field
Service
Representatives
to
provide
technical
guidance
and
advisory
assistance
for
the
installation
,
overhaul
,
repair
and
maintenance
of
Siemens
Energy
&
Automation
,
Inc
.
equipment
,
processes
and
systems
.
Contact
regional
service
centers
,
sales
offices
or
factory
for
details
.
Distinctive
signal
words
(
DANGER
,
WARNING
,
CAUTION
)
are
used
in
this instruction book
and
on
product
labels
to
indicate
degrees
of
hazard that
may
be encountered
by
the
user
.
These
signal
words
are
defined
below
.
Courtesy of NationalSwitchgear.com

able
of
Contents
(
Page
Page
13
TESTING
(
continued
)
Short
Time
Pickup
Test
Instantaneous
Trip
Test
Ground
Pickup
Test
Long
Time
Delay
Test
Thermal
Memory
Test
Short
Time
Delay
Test
Ground
Time
Delay
Test
Zone
Interlock
Test
Load
Indicator
Output
Test
Tripping
Actuator
Test
Current
Sensor
Test
Connections
Continuity
Checks
Excitation
Test
Sensor
Polarity
Primary
Current
Testing
MAINTENANCE
Removing
Static
Trip
III
from
Breaker
Repair
Cleaning
INTRODUCTION
General
Current
Sensors
Static
Trip
III
Device
OPERATIONS
Tripping
Actuator
Targets
Available
Types
Time
-
Current
Curves
Performance
In
Service
.
.
Settings
Time
Bands
General
Notes
Load
Indicator
Zone
Interlock
Coupler
.
.
.
Zone
Interlock
Expander
.
TESTING
General
Secondary
Current
Testing
Test
Connections
Long
Time
Pickup
Test
1
13
1
13
1
13
1
14
3
14
3
14
3
15
3
15
5
15
6
16
9
16
10
16
10
(
16
11
17
11
17
11
17
12
19
12
19
12
19
12
19
12
Note
The
instructions
contained
within
this
manual
are
necessary
for
the
safe
installation
,
maintenance
and
operation
of
this
equipment
.
If
this
manual
is
misplaced
or
lost
,
replacement
manuals
are
available
through
the
local
Siemens
Energy
&
Automation
,
Inc
.
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
pro
-
blems
arise
which
are
not
covered
sufficiently
for
the
purchaser
'
s
purposes
,
the
matter
should
be
referred
to
the
local
Siemens
Energy
&
Automation
,
Inc
.
sales
office
.
THE
CONTENTS
OF
THIS
INSTRUCTIONAL
MANUAL
SHALL
NOT
BECOME
PART
OF
OR
MODIFY
ANY
PRIOR
OR
EXISTING
AGREEMENT
,
COMMITMENT
OR
RELATIONSHIP
.
THE
SALES
CONTRACT
CONTAINS
THE
ENTIRE
OBLIGATION
OR
SIEMENS
ENERGY
&
AUTOMATION
,
INC
.
THE
WARRANTY
CONTAINED
IN
THE
CONTRACT
BETWEEN
THE
PARTIES
IS
THE
SOLE
WARRANTY
OF
SIEMENS
ENERGY
&
AUTOMATION
,
INC
.
ANY
STATEMENTS
CONTAINED
HEREIN
DO
NOT
CREATE
NEW
WARRANTIES
OR
MODIFY
THE
EXISTING
WARRANTY
.
I
drawings
or
other
supplementary
instructions
for
specific
applications
are
forwarded
with
the
manual
or
separately
,
they
take
_
precedence
over
any
conflicting
or
imcomplete
information
in
this
manual
.
1
1987
^
Siemens
Energy
&
Automation
.
Inc
Courtesy of NationalSwitchgear.com

*
itroduction
Page
1
i
In
addition
to
the
basic
system
,
optional
devices
can
be
pro
-
vided
tor
additional
functions
.
These
include
:
The
information
contained
within
is
intended
to
assist
operating
personnel
by
providing
information
on
the
general
act
eristics
of
equipment
of
this
type
.
It
does
not
relieve
the
of
responsibility
to
use
sound
engineering
and
safety
prac
-
ihe
application
,
operation
and
maintenance
of
the
par
-
rfMf
1
.
A
Load
Indicator
mounted
on
the
front
cover
of
the
breaker
to
display
load
currents
and
provide
adjustable
load
alarm
contacts
.
IJCO
*
ii
iicuiar
equipment
purchased
.
it
drawings
or
other
supplementary
instructions
for
specific
ap
-
plications
are
forwarded
with
this
manual
or
separately
,
they
take
precedence
over
any
conflicting
or
incomplete
informa
-
tion
m
this
manual
.
ine
sales
contract
carries
all
the
information
on
warranty
coverage
.
2
Zone
Interlock
Coupler
and
Zone
Interlock
Expander
devices
to
connect
trip
devices
together
for
selective
short
time
and
ground
fault
interlocking
.
Current
Sensors
Toroidal
current
sensors
,
similar
to
standard
bushing
current
transformers
,
are
mounted
,
one
-
per
-
phase
on
the
primary
studs
of
the
circuit
breaker
.
They
are
special
purpose
current
transformers
that
have
the
accuracy
and
output
voltage
capabili
-
ty
needed
to
properly
operate
the
static
trip
device
.
These
pro
-
vide
a
signal
to
the
static
trip
device
proportional
to
the
primary
current
.
The
current
sensors
selected
for
a
specific
circuit
breaker
establish
the
maximum
continuous
current
rating
of
that
breaker
and
the
adjustment
range
.
Each
sensor
provides
a
choice
of
eleven
selectable
current
settings
.
General
Static
Trip
HI
is
the
name
of
Siemens
Energy
&
Automation
,
inc
microprocessor
based
static
overcurrent
trip
device
for
use
on
LA
and
RL
series
low
voltage
power
circuit
breakers
.
The
>
>
reakers
and
trip
device
are
listed
and
labeled
by
Underwriters
.
boratories
(
UL
)
.
With
the
exception
of
the
selector
switches
and
one
poten
-
tiometer
the
Static
Trip
ID
overcurrent
trip
devices
are
complete
-
ly
static
.
There
are
no
moving
parts
or
mechanical
contacts
.
Components
used
are
semiconductors
,
integrated
circuits
,
capacitors
,
transformers
,
etc
.
The
selector
switches
are
seal
-
ed
binary
coded
decimal
types
with
gold
plated
contacts
.
The
device
uses
an
eight
bit
single
chip
microprocessor
,
with
its
internal
ROM
(
Read
Only
Memory
)
programmed
to
be
a
trip
device
.
All
the
circuits
are
designed
for
conservative
loading
of
components
for
long
life
and
little
maintenance
.
The
rated
secondary
current
for
the
sensors
is
0.5
amperes
at
rated
primary
current
.
All
the
sensors
used
with
the
Static
Trip
III
device
are
encapsulated
in
polymeric
material
to
pro
-
tect
the
windings
and
prevent
their
motion
during
short
circuits
on
the
circuit
breaker
.
Static
Trip
III
Static
Tnp
Hi
overcurrent
trip
devices
operate
to
open
the
cir
-
cuit
breaker
when
the
circuit
current
exceeds
a
preselected
current
-
time
relationship
.
Depending
on
the
magnitude
of
the
overcurrent
and
the
selected
settings
,
tripping
may
be
instan
-
taneous
or
time
-
delayed
.
Energy
t
0
operate
the
tripping
system
is
obtained
solely
from
circuit
being
protected
.
Batteries
or
other
power
sources
im
not
needed
A
molded
polyester
enclosure
,
attached
to
the
breaker
,
houses
the
trip
device
and
its
electronic
circuits
(
Figure
1
)
.
The
static
tnp
device
receives
the
signal
from
the
current
sensors
.
It
monitors
the
signal
,
senses
overloads
and
faults
,
and
deter
-
mines
the
required
action
in
accordance
with
preselected
con
-
trol
settings
.
?
no
In
the
Static
Trip
III
device
the
current
signal
is
scaled
to
the
proper
value
internally
by
small
transformers
,
one
per
phase
,
rectified
and
converted
to
a
voltage
signal
by
a
resistor
.
This
voltage
signal
is
converted
to
a
digital
signal
by
an
analog
to
digital
converter
.
All
timing
and
logic
decisions
are
then
pro
-
cessed
mathematically
in
the
microprocessor
,
and
are
not
af
-
fected
by
variations
due
to
external
influences
,
such
as
changes
m
temperature
h
°
^
asic
static
overcurrent
trip
system
consists
of
three
parts
t
Primary
circuit
current
sensors
The
Static
Trip
III
device
t
A
in
.
xjnetically
held
circuit
breaker
latch
release
device
call
-
(
!
n
t
•
r
,
npmq
actuator
Courtesy of NationalSwitchgear.com

I
Courtesy of NationalSwitchgear.com