GE AK-1-15 Maintenance Manual

1. Screw .
2. Stationary Arcing Contact -
3. Pin (Stationary Arcing Contact)
4. Movable Arcing Contact
5.
Spring (Leaf Contact) _
5A. Stationary Intermediate Contact
6. Movable Main Contact ·
. 7. Shouldered Pin
1
2
3
4
Low Voltage Power Circuit Breake~s GEK-7303
- 28 ·
~
--------- 27
26
8. Pin (Arcing Contact Links)
5 ~---t-..,,._---.....::,aa-...,
•--r--+---+----...-- 22
.J.------~l -
9. Insulating Link ·
.
10. Pin (Insulating Link)
lOA. Adjusting
Plate
5A-~--t---\----~-
______ 20A
10B. Buffer Spacers
11. Pin (Side Link)
12. Link
13. Clevis
14. Clevis Pin
6
'l
8
9
___ 20
~~f/r:J__..-------1~
----18
15. Lower Stud
16.
Pole Unit Base
10 -----
1-----16
· 17. Spring (Main Movable Contact)
18.
Pin (Main Movable Contact) ·
lOA ____ ,
19. Pin (Movable Arcing Contact)
20. Side
Link - _
20A.
Contact Stop . - · -
21.
Spring -(Statio:f1ar.y Main Contact) - -
22 •.
Spring (Stationary Arcing Contact)
23.
Upper Stud -_ ·
24. Leaf Spring (Stationary Main Contacts)
· 25. Pin (Stationary Main Contact) -
26. Stationary Main Contact
27 • .
screw .
28. Stop
=- .:=.;,,.-i----,
{ -.
I
I
15
. Fig. 6 (0107D7517rPote unit assembly-AK-50 _
a:t least 3/16
1/4 in.
in., the ·main: contacts gap at l~ast - spacers on the cross-bar • . The ~ocking nuts <?D
- the buffer bolts should. be locked m such a pos1-
- -
NOTE: - This check can . best be made
by
means of the m~~tenance - h~dle,-~ith - _
the safety pin rel?trammg th_e closing springs.
If the gap is under the required minimum. it is
- usually possible to form the arcing contacts and
obtain the re_quired dimensions. 'FO form ~e con-
tacts, place a piece of conchnt approximately
two
feet long, over the contact and form the contact
either forward or backward. If the proper dimen-
sions - are still not obtained the movable arc-
ing contacts should be replaced.
If it has been necessary to make -any adjust-
ments while obtaining proper _ contact sequence,
the contact wipe and pressure must be checked, -
and adjusted, if necessary.
CONTACT GAP (Fig. 6)
When· the breaker is open, the gap -between
the movable and stationary contacts should be
between 2 5/8 in. and 2 3/4 in. The gap may
be adjusted · by varying the number of buffer
- tion that th~ buffer bolt may be rotated fre~ly.
REPLACEMENT OF CONTACTS
(Fig. 6)
- .
- Stationary A~cing Contads (2, Fig. _6)
(1, Fig. 7) -
1. Remove the upper plate by removing two
screws . (1). On the -AK-75 and -100 r~move ~e
.top contact Qlock (25, Fig. 7) and remove insulation
(3, Fig. 7). __
- .
2. Loosen screws holding spring. - (5)
3 • . - Remove pin (3) freeing the stationary con-
.
tacts and springs (22). · ·
4. Install new springs and stationary arcing
contacts in reverse order. ·
5. Adjust contact wipe and
pressure. (See
ADJUSTING
CONTACT WIPE AND PRESSURE).
,,

GE AK-1-15 Specifications

General

Brand	GE
Model	AK-1-15
Category	Circuit breakers
Language	English