GE AKR Series User Manual

GEI-86134, Power
Circuit Breokers
Fig.
21,
SST/ECS test set,
cat. no.
TAK-TSI
USING THE
SST TEST
sET
The TAK-TSI
Test
Set
is
a
portable
instrument
designed
for field-checking the time-current char-
acteristics and
pickup
calibration
of
the
SST's
various
trip elements.
It
can
verify
the ability of
the
Flux-Shift
Trip
Device
to trip
the breaker
andr
in
addition,
includes means for continuity
checking
the
phase
sensors.
WARNING:
BEFORE CONNECTING THE
TEST SET TO THE BREAKER
TRIP
DE-
VICE SYSTEM,
ENSURE
THAT THE
CIRCUIT BREAKER 15
COMPLETELY
DISCONNECTED
FROM ITS POWER
SOURCE. ON
DRAWOUT EQUIPMENT,
RACK THE BREAKER TO ITS
DISCON-
NECTED POSITION. VERIFY I:HAT
THE
BREAKER IS TRIPPED.
Either of
two test modes may
be employed:
rrArt
-
Programmer
Unit
Only.
These
tests
are
conduct@
unit
disconnected
from the
breaker. During test, the
unit can remain
attached
to the
breaker
or
may
be completely re-
moved from
it.
18
CAUTION:
NEVER
DISENGAGE THE
T//,RNESS CONNECTOR FROM
THE PRO-
GRAMMER
UNIT ON A BREAKER THAT
/S
ENERGIZED
AND
CARRYING LOAD
CURRENT.
THIS
WILL
OPEN-CIRCUIT
THE CURRENT S.ANSORS,
ALLOWING
DANGEROUS AND
DAMAGING VOLT-
AGES TO
DEVELOP.
Test
scope:
1.
Verify
the
time-current
characteristics
and
pickup
calibration
of
the various trip
elements.
2.
Verify operation of
the
SST
target indicators
on
programmer
units so equipped.
rrBrt
-
Complete
Trip Device System. For these
tests,
mounted
on
the breaker
and
connected
to
its
wirins
harness.
Test
scope:
1.
A11
"A"
tests
previously
described,
plus
pro-
vision
for
optionally switching the
programmer's
output
to
activate
the
Flux-Shift
Trip Device
and
veri-fy its
operation by
physicaliy
tripping the
breaker.
2.
Check
phase
sensor continuity.
In
the event that
any
component of the
SST
system
does
not
perform
within the
limits
prescribed
in
test instructions
GEK-64454.
it should
be
replaced.

GE AKR Series Specifications

General

Number of Poles	1, 2, 3
Voltage Rating	240V AC, 480V AC, 600V AC
Frame Size	AKR
Trip Unit	Thermal-Magnetic
Standards	UL, CSA
Amperage	Varies by model (15-1200)