GE AKR-30 Series Maintenance Manual page 137

Breaker
Type
(Amperes)
AKR-30
AKR-50
AKRT-50
G)
@
Pickup tolerance is ±. 9%
Pickup tolerance is ±. 10%
1 1 . 1 ECS CABLI NG DIAGRAM
ECS TRIP CHARACTERISTICS
X
=
Trip Rating
in Amperes
--
•
Sensor Rating
( )
- - - - - -
Frame
Size
Pick
(
Sensor
Ampere
Rating
100, 1 50, 225,
800 300, 400,
600, 800
300, 400, 600, .6, .7, .8,
1600
800, 1200, 1600
2000 800, 1200,
@
1600, 2000
@
TAB L E 1 0 - SENSOR R ESISTANCE VALUES
Ampere
Rating
lOO
1 50
225
300
400
600
800
1 200
1 600
2000
+ A + B
�
I
BREAKER
BACK FRAME
LEFT POLE
CURRENT
SENSOR
LOAD
FIG. 75. CABLING DIAG RAM FOR ECS TRIP
DEVI CE
TABLE 9
ECS PROGRAMMER ADJUSTMENT RANGE (Set Points)
Long Time
@
®
( )
@
•
L Time Pickup
)
(
Delay
Multiple Band Multiple
X
of (Seconds) of L
3, 4, 5 ,
6, 8, 10 (L)
Maximum
22
-or-
lntermed.
10
.9, 1 .0,
1. 75, 2,
(X)
Minimum
1 . 1 2.25, 2.5,
4
3, 4 (L)
Time delay shown at 600% of long time pickup setting
lower limit of band.
Time delay shown at lower limit of band.
Resistance in Ohms
between Term i nals
3.0 - 3.4
4.4 - 5.0
4.8 - 5.6
6.4 - 7.2
6.7 - 7.8
6.4 - 7.6
8.8 - 1 0.4
1 3. 5 - 1 5.8
1 9. 4 - 22.8
29. 5 - 34.5
FLUX
�- - - - - -
• c
PROGRAMMER
SHIFT
TRIP DEVICE
I
I
(48V.
(TO SCR
ANODE)
BLACK
WHITE
BLACK
WHITE
BLACK
Short Time
®
Instantaneous
@
Time (
) Pickup
Delay
Band
Multiple
(Seconds) of L
Maximum
0.35
In termed .
4, 5, 6,
0.21
(L)
8, 10, 1 2
Minimum
0.095
(6L ) ,
at
UNIT
de)
)
5 7