GE AK-2-15 Installation And Operation Manual page 3

-
?,_
Breaker
Tvppical Outline &onduits
or
cables. Steps in the prdcedure
LJ
c lrawine No.
for installing enclosed breakers follow:
-
'\\
In choosing a location for the installa-
AK-2-15 and 25
tion offan AK Circuit Breaker, there are
AK-3-15 and 25
two factors to be considered. The first AK-2-50 Man. Opera ~"
of these is the effect of the location on
AK-2-50 Elec. Oper.
_L
the breaker itself.
Much better oer- AK-s-5') Fan. QPer*
1dlL 133.3
.-- ^
,>
3oer. _ 121C7555
695C116
1. If the breaker is an AK-15, AK-25
' 12lC7570
or an AK-50, remove it fromthe enclosure.
845C281
With AK-50 breakers, a handle and cam
238C123
arrangement is used for that part of the
.nfmCCrn breaker movement that involves the dis- +
formance and longer life may be expected AK-Y-50 E1ec'* ( -
if the area is clean, dry, dust-free, and AKT-2-50 Mm- OP@r. '%zzY
well ventilated, than if the opposites to
nvm ? Ch:rz.^^ ,-L^._
these conditions exist, The second con-
xk'LL-.J-r)" Nlilll. "paI-.
engagement or engagement of the primary
disconnect.
AK-75 and AK-100 breakers
are bolted solidly to the enclosure frame
sideration is convenience for operation
and maintenance.
The breaker should be
easily accessible to the operator, and
there should be sufficient space allowed
for maintenance work to be aone if this
becomes necessary.
102C3650
rnnrrnnr.
IV'LJDDI
121C7589
121c7590
845C284
269C225
121C7583
121C7557
845C290
'-'269C227
121C7585
121C7559
19*r=?mn
AKT-3-50 Elec. dper.
AK-2-75 Man. Oper.
AK-2-75 Elec. Oper
AK-3-75 Man. Opes
AK-3-75 Elec. Oper
AK-2-100 Man, Opel
AK-Z-100 Elec. Ope:
AK-3-100 Man. Oper _
AK-3-100 Elec. Oper.
AK-4-50 Man. Oper: l"IVY"""
AK-4-50 Elec. Oper. 134C2601
AK-5-50 Man. Oper. ,_ 134C2610
AK-5-50 Elec, Oper. 134C2611
I :
The .surfaee on which the breaker is
mounted must be flat throughout in order
not to impose any
1./..~~..1 1.^1. ..I2 .~~ -..
"the breaker unit. Tl
must be rigid enough io avoid any pos- ,$
sibility of the breaker studs supporting the -
weight of the breaker.
Minimum cutom
dimensions, as giv
outline drawing, must ne n
provide adequate electrical clc
and need not be removed from the en-
closure.
2. Remove cover plates of enclosure
and prepare them to accommodate whatever
power entrance means is used.
3, Mount enclosing case to supporting
structure,
A K Circuit Breakers are designed to
be mounted in any one of three ways.
,These are dead front mounting, individual
mounting with the enclosure beingprovided,
and drawout mounting in which the breaker
is designed for insertion into a cubicle
in drawout equipment such as a substation
or control board.
4, Replace cover plate and make
power connections to stationary terminals
in mrlnsure.
DEADFRONTBREAKERS
These breakers are designed for mount-
ing in a switchboard or enclosing case of
the customer's design and construction.
Mounting in this instance consists of bolting
the breaker frame to a supporting structure
within the switchboard or enclosure, con
netting the power buses or. 'cables, and
making any necessary control cdnnections.
The front cover of the breaker enclosure
may be a hinged door or a plate bolted to
the panel. In either case, it should have
a section cut out, through which the front
escutcheon of the breake%'may protrude.
Outline drawing numbers giving the dimen-
sions needed for preparing .a+~suitable
enclosure or cubicle for the various types
of A
breakers are given below. These
INDIVIDUALLY ENCLOSED BKILAKBKY
en by the appropriate
-.
.
_- _- .__- __ _
supplied with several types of enclosures,
mintaine'd to
most common is the wnx~..nl ,.I,---,. L-a e-
the weather resista
earance.
used for favorable
,:a
w... . __---
Individu&lv enr&sed hreaknrs RPP
cuit, operate the breaker several times to
be sure that it IS functioning properly.
(See OPERATION).
AK-4/5-50 breakers which are individ-
ually enclosed will have enclosures of the
AKD5 drawout type. These breakers will
be straight drawout breakers, types AK-4A-
50 and AK-5A-50. (See instructions in this:
book nnder the heading. "Drawout Breakers
_--__ -..--
AKD5 Equipment") I'
the latter for outdo~ ~~~..~~.~~~ .~ ..__.
;,;,,locations that may be subject tounfavorable
conditions. All of the enclosures are pi
vided with suitable means for mounting
wails or supporting framework nemfivll
~'"',czL"'pu'I;""c ryyc "I
nt type. The former is DRAWOUT BREAKERS AKD EQUlPMENT
indoor locations and
or locations or incinor
Mounting drawout breakers consists of
simnlv olacing the breaker in the proper
=o- pi&ion with respect to its enclosure,
sliding or rolling it to a stop position and
. . _"_..*". ,bfi by means of a racking handle and mechl
cover plates are- supplied I.-... I..1 .
vith the 411..
are for standard 2 or 3 pole breakers.
closures
which mm hP Arilld nr marhir
------ --^-a
-_ ______- __ ...IY..-. led
anism, racking it through the last part of its
to accommodate the entrance of bus duets,
movement during which the stationary and
movable halves of the disconnects engage.
\ \
f '..
mrernai custorrion on
he sunoortine structure 6, Before energi&ng the power cir-