GE AKR Series User Manual

GEI-86134,
Power
Circuit
Breokers
TYPE
ECg
OVERCURRENT
TRIP
DEVICE
The ECS is
a
solid-state,
direct-acting,
self-
powered
trip device
system
that
essentiatly
dupli-
cates SST except for
the following:
1.
Programmer units
are limited
to
combinations
of
Long Time,
Short Time
and Instantaneous trip
elements
only. The
Ground
Fault
element is not
available.
2.
Fau1t
indicators
(trip
targets)
are
not
avail-
able.
3. Phase sensors
are
not tapped.
As
listed in
Table
5,
each sensor has
only a
single
ampere
rating.
A
different sensor is
available for each
of
the tabulated
ampere
ratings,
which span the same
range
as SST.
4.
Neutral
s enso rs
ar
e not r equir ed
becaus e
ther
e
is no
Ground
Fault
function.
In
all
other
respects
the ECS trip device system
operates and
can be treated identically to
SST.
This
includes circuitry,
size, construction,
com-
ponent
location,
programmer
unit
set
points, per-
formance
characteristics,
operatin
g
r
ange,
quality,
reliability
and
the flux
shift trip device.
Use
the
same
troubleshooting
and
test
procedures
for
single-phase, high
current-low voltage tests
or
those employingthe
TAK-TS1 Test Set. Thei
Ground
Fault
test
procedures,
of eourse, do not
apply.
:::--
*
,3"
Fig.
29. ECS
Programmer
unit
PxocBtLMEjugrJ
"Ftux sHtFI"
TRIP
c0[.
24
Fig.
30. ECS
Block
diagram

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)