Undervoltage Lockout Device - GE AK-2A-15 User Maintenance Manual

GEI-50299 Power Circuit Breakers Types AK-2 -15 and AK-2/3-25
Figure 29. (0101 C7842 ) Undervoltage Lockout Device
1 . Cross Bar
2. Left Side Frame
3. Trip Paddle
4 . Undervoltage Armature
34
Figure 28. (01 52C9206) Undervoltage Tripping Device
I
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..
1.. ._ -- -- --. ..- --
ening of the bend in clamp (9) will separate the
coil from the magnet.
must be disconnected.
lliSTANTANEOUS UNDERVOLTAGE
TRIPPING DEVICE
The instantaneous
mounted in the same location and manner as the
static time-delay device and its construction is
similar .
The adjustments and replacement of t is
device are the same as those described above for
the static time-delay undervoltage device.

UNDERVOLTAGE LOCKOUT DEVICE

(Figure 29)
The undervoltage lockout device holds an
open breaker trip-free when the coil of the device
is deenergized. When the breaker is in the closed
position, linkage operated by the breaker mech­
anism cam positions itself to mechanically hold
the undervoltage device armature in the closed
air gap position to prevent tripping the breaker
in the event the undervoltage device coil is de­
energized. This feature when used in conjunction
with normally-closed auxiliary contacts of an
1 . Mounting Screw
2 . Frame
3 . Armature
4 . Spring
5 . Shading Ring
6 . Adjusting Screw
7. Locking Nut
8. Bushing
9. Clamp
1 0 . Magnet
1 1 . Screws
1 2 . Coil
1 3 . Rivet
1 4 . Adjusting Screw
1 5. Locking Wire
1 6. Mounting Nut
1 7 . Mechanism Frame
18. Trip Paddle Clamps
19. Trip Paddle
20. Adjusting Screw
The coil leads, of course,
undervoltage device is
,
..