Trip Characteristics - GE AKR-4-30 Maintenance Manual Supplement

Fig. 31.
X = Trip Rating
in Amperes
=Sensor Rating
Frame (
Breaker
Size
Type
Sensor
(Amperes)
Ampere
Rating
100,150,225,
AKR-30 800
300,400,
600,800
300, 400, 600,
AKR-50 1600
800,1200,1600
AKRT-50
2000 800, 1200,
1600,2000
CD
9%
Pickup tolerance is±_
®
10%
Pickup tolerance is±_
ECS current sensors on AKRU-4A-30
breaker
TABLES
ECS TRIP CHARACTERISTICS
ECS PROGRAMMER ADJUSTMENT RANGE (Set Points)
Long Time
)
eD
Pick (=L) Time
( )
Delay
@
Multiple Band
of X (Seconds)
Maximum
22
.6, .7, .8,
Intermed.
10
.9, 1.0,
1.1
Minimum
(X)
4
@
600%
Time delay shown at
lower limit of band.
@)
Time delay shown at lower limit of band.
27
(See page for time-current curves)
Power Circuit Breakers, GEI-86134
Short Time
Instantaneous
Pickup
Time Pickup
®
) (
(
Delay
@)
Multiple
Band Multiple
ofL (Seconds) ofL
3, 4, 5,
6, 8, 10 (L)
Maximum
0.35
-or-
In termed. 4, 5, 6,
0.21
1.75, 2, 8, 10, 12 (L)
2.25, 2.5,
Minimum
0.095
3, 4 (L)
(6L),
of long time pickup setting
®
)
at
25