Siemens Static Trip III User Manual

General
lnformation
u,
lntroduction
The
trip
units
of the
Static
Trip
lll
family
are
microprocessor
controiled
overcurrent
protection devices
for application
with
Siemens
Type
RL series
of
low
voltage
power circuit
breakers
as
well
us oilret
manufacturer's
circuit
breakers
ln addition
to
the
basic
overcurrent
protection functions,
Static
Trip
lll
trip
units
have
af
ullcomplement
of standard
and
optional
features
lncluded
in these
features
are
serial
communications,
energy
,onltoting
and
additlonal
protective relaying
functions
This
tutt+eatur6s
capability
together
with
programmable
flexibility
aiLows
for the
eisy
aOiptalion
of
new
and
changing
protection
requirements.
A standard
feature
on
all
trip
units
is RMS
current
sensing'
As opposed
to
peak-current
sensing,
RMS
sensing
mea-
.rr"i
if,"
true
heating
potential of the
current
waveform
This
allows
for
more
accurate
overcurrent
protection and
eliminates
nuisance
tripping
due
to
harmonic
distortion
of
the current
waveform.
There
are
four
basic
models
of
the
trip
units
All
models
are
interchangeable
on
any
frame
rating
of Siemens
Type
RL
low
voltage
power circuit
breakers
.-diu'ti"
rtip
lll
models
provide basic
overcurrent
protection'
.
Si;il;
irip
lllC
versions
provide the
added
capabilities
of
communications
and
current
metering'
o
Static
Trip
lllCP
devices
have
full
power metering
.
Siuii"
Trib
llICPX
trip
units
have
extended
protective
relay-
ing
capabilities,
Static
Trip
lll trip
units
are
also
available
with
a universal
mounting
package for
retrofit
applications
The trip
units
may
O"
L."dto
retrolt
the
low
voltage
circuit
breakers
of
almost
every
switchgear
manufacturer.
1--
c_
lnstantaneous
Pickup
,s,.
Long
Time
Setting
DelaY
.*:'li[p:;
xSensor
Is@6x
Short
Time
Pickup
DelaY
+t
LCD
Target
lndicator
Fault
PickuP
LED's
LCD
Target
Reset
Overcurrent
Protection
Adjustments
Protection
Selection
Switches
Local
BDU
Communications
Porl
Communications
Microprocessor
Watchdog
LED
Trip Unit
Catalog
Number
lnterlock
Port

Siemens Static Trip III Specifications

General

Brand	Siemens
Model	Static Trip III
Category	Circuit breakers
Language	English