GE AKD-10 Application Manual page 15

(WPS-20, 32, 40 or 50) must be ordered with the open fuse
lockout — character 3 in the breaker catalog number — when
it is to be used in a high short circuit application requiring
current limiting fuses. Key interlocking must also be ordered
for both the circuit breaker and fuse roll-out to prevent removal
or insertion of the fuse roll-out unless the circuit breaker is
open. Refer to the key interlock accessory for details.
™
Table 14.1 WavePro Breaker Fuse Roll-outs
Fuse roll-out catalog numbers and ratings
For use with breaker Fuse roll-out
frame size catalog number
2000A (WPS-20) WP32FRE
3200A (WPS-32) WP32FRE
4000A (WPS-40) WP40FRE
5000A (WPS-50) WP50FRE
*Fuses are shipped as "XS" material
Hidden-On Button and Push Button Covers –
Field installable kit available (Breaker accessory)
All electrically operated WavePro breakers are provided with
a manual close button on the escutcheon. For applications
where manual closing is not desirable, the Hidden-On close
button can replace the standard manual close button. This
feature provides limited access to the mechanical close
mechanism. For emergency or supervised operation, a
0.100" diameter rod can be inserted through a hole in the
Hidden-On button to manually close the breaker. The
Hidden-On feature provides double insulation between the
operator and any live parts in the breaker. This feature is
typically used on a breaker that is electrically interlocked with
other breakers, such as in an automatic transfer scheme.
Sealable covers can be provided for the CLOSE and OPEN
buttons on the breaker escutcheon. These covers help prevent
accidental manual operation of the circuit breaker. Applications
include supply breakers for fire pumps (to prevent access to
the OPEN button) or critical feeders where accidental operation
may have a serious impact on a process. The push button covers
can be applied to either the CLOSE or OPEN buttons or both.
Table 14.2
Field Installable Kit Catalog Numbers
WP-08 / 16 / 20 / 32 / 40 / 50
Hidden-On Button Sealable Push Button Covers (Qty. 2)
WPHIDONKIT1 WPPBCVRKIT2
Key Interlocks – (Equipment accessory)
Optional provisions for a key interlock are located on the left
side of the breaker cubicle. Key interlocks are used to supervise
the closing of a circuit breaker or the operation of upstream
or downstream devices. Typical applications include interlocking
main and tie breakers to prevent paralleling, and interlocking
secondary main breakers with primary air switches. Breakers
can be locked in the open position only. Normally, the key is
removable when the lock bolt is extended, holding the breaker
in a trip-free condition. Certain key interlock applications
14
Gould-Shawmut fuse range*
2000 / 2500A
2000 / 2500 / 3000 / 4000A
2000 / 2500 / 3000 / 4000 / 5000A
2000 / 2500 / 3000 / 4000 / 5000A
require the key to be removable when the breaker is able to
be closed or when the lock bolt is withdrawn. Up to two key
positions can be accommodated in each breaker cubicle.
Table 14.3 Key Interlock Applications
Breaker application Key interlock description
Single key - key removable when breaker is
locked open
WP-08 / 16 / 20 / 32 / 40 / 50 Double key - both keys removable when
breaker is locked open
Double key - one key removable and one
key captive when breaker is locked open
Fuse Roll-out Single key - key removable when fuse roll-
out is racked in to CONNECT position
Lifting Tool – (Equipment accessory)
The lifting tool is the interface between the breaker and the
overhead breaker lifting device or any other portable lifting
means that may be used for installing and removing the
WavePro drawout breakers. It attaches to the breaker to
provide stability when lifting the breaker from its drawout
rails. Pickup points on the breaker and lifting tool are
designed for center-of-gravity lifting so that the breaker is not
subject to excess movement when removed from the cubicle.
The lifting tool for 800-2000A frame breakers features 3-point
lifting for easier installation of fused and unfused breakers.
Separate lifting tools are used for 3200-4000A breakers and
for 5000A breakers and fuse roll-outs.
Table 14.4 WavePro Breaker Lifting Tools
WP-08 / 16 / 20 WP-32 / 40
Lifting
0324B4551G001 0247B8961G001 0247B8961G003 0247B8961G004 0247B8961G005
Tool
Open Fuse Lockout – OFLO (Breaker accessory)
The open fuse lockout device is provided with any fused
breaker. The OFLO consists of an individual trip solenoid for
each pole, connected directly across the fuse in that phase.
When any fuse blows, the solenoid is energized and trips the
breaker to prevent single-phasing. The breaker is mechanically
locked out and cannot be reclosed until the fuse is replaced
and the target indicator of the phase involved is reset.
When the fuses are mounted in a separate fuse roll-out
(used with WPS-20, WPS-32, WPS-40, WPS-50) the open fuse
lockout is wired to the fuses through secondary disconnects
on the roll-out and on the breaker. The OFLO utilizes dedicated
secondary disconnect points, so no other breaker accessories
are affected.
Fuse Roll-out Fuse Roll-out
2000 / 3200 / 5000A
WP-50
4000A