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PART 1
GENERAL DESCRIPTION
This Instruction Manual the
and Fusematic breakers only. For
instructions on the FP ‘75 series breakers refer in Instruc-
tion Booklet
The FP line of Low Voltage Power Circuit Breakers and
Fusematic Breakers, which ranges from through
1600A continuous current at 600 Volt ratings, are designed
for simplicity of operation, reliability and easy mainten-
ance. FP Breaker and FM Fusematic are equipped
with a stored energy mechanism mechanically trip free in
any position of the closing cycle, three unit pole assemblies,
fully field adjustable timing devices, multi-range series trip
coils, and telescoping roll-out rails. three position
mechanism is operable with the door closed.
STANDARD ACCESSORIES
Maintenance closing handle 115
Cell racking in handle
PART 2
SHIPMENT, RECEIVING, HANDLING
AND STORAGE
Each FP Breaker and FM Fusematic is thoroughly inspect-
ed and tested before leaving the factory. Breakers are
shipped in individual crates or in the cell compartment.
If breakers are crated, no hooks should be used in handling.
Examine equipment carefully for indication of damage
sustained in transit. If damage in transit is indicated, call
for an immediate inspection by the delivering carrier. Upon
assessment of the damage a claim should he filed with the
carrier or, depending on the nature of the damage, an in-
tent to file for concealed damage should be registered. For
assistance in filing the claim, advise the area sales office of
Federal Pacific Electric Company, giving a full description
of the damage, serial number of the breaker, delivering
carrier’s name, and, if shipped by rail, the car number,
waybill reference, and any other information that might he
of help to the Company in aiding the filing of the
damage claim.
When unpacking, make all items are removed
from the box including
packing
list, instruction book, main-
tenance parts and hardware. Report any shortage immed-
iately. See that identification tags are left on the breaker.
Lifting eyelets are furnished for handling. Do not lift or
handle breaker by the front box or the operating handle.
Clean breaker thoroughly. To remove dust industrial
vacuum cleaner is recommended. If the breaker can be
installed in its permanent location, it is advisable to do so,
even if it is not expected to be for some time.
When breakers must he stored in buildings under
tion, be sure they kept in a space free of dust, moisture,
dirt and in an upright position. It is recommended that
the breaker not be operated prior to final inspection.
PART 3
INSPECTION AND INSTALLATION
SECTION I
Inspection Manually Operated
Breakers
The FP and FM breakers consist of a coordinated set of
assemblies mounted on a steel frame, all carefully adjusted
and locked in place for long and trouble-free operation.
To in properly checking and inspecting breakers
to placing into service, the following steps should be
in the order listed:
1. Remove chutes and interphase
2. Charge stored energy by operating
handle positive stop. Return handle to normal
vertical position by rotation.
NOTE: Charging Operation:
FP Rotate handle counterclock-
wise to engage mechanism and then 1 clockwise to
positive stop. (Figure 1)
FP collapsible handle from
vertical down position to vertical up position. Rotate
clockwise to positive stop. Release handle slowly.
Figure 2
FP
25
-
600
,
FP
50
-
1600
,
covers
FM
25
-
600
FM
50
-
1600
#
IN
810
.
!
0
.
15
A
assist
prior
followed
The
barriers
.
mechanism
rotating
counter
-
clockwise
arc
toa
The
drawout
&
FM
25
-
600
—
90
°
1
-
9252
80
°
1101
-
9251
4
all
Figure
X
&
FM
50
-
1600
—
Unfold
180
°
(
Figure
2
)
.
*
in
sure
that
an
energized
construc
-
are
Courtesy of NationalSwitchgear.com
