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AK-1-15
GE AK-1-15 Maintenance Manual
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GEK
-
7303
Low
Voltage
Power
Circuit
Breakers
push
the
·
armature
solidly
against
the
magnet
(see
Fig.
28).
The
trip
arm
should
travel
at
least
5/32-in.
5.
Replace
.
new
devi9e
in
rever.se
order
.
6.
Adjust
device
as
described
above.
NOTE:
Component
parts
of
any
overcurrent
tripping
devices
are
not
replaceable.
It
will
be
necessary
to
install
a
new
device
when
parts
are
worn
or
damaged.
•J::-:
;:~
~···1·
·
.
~~
•
.'
··-
.
.
.
~
...
.....
·'.
"4
;
.
.
..
.
.
.
.'
.
:.,
Fig.
29
(8024843,
801449,
8019485)
Overcurrent
tripping
device
EC
-
2
29
31
Table of Contents
Table of Contents
2
Introduction
3
Manual Closing
3
Operation
3
Closing of Electrical Breakers
4
Electrical Closing
4
Manual Maintenance
4
Quick Close for Electrical Breakers
4
Electrical Tripping
5
Inserting Safety Pin
5
Inspection
5
Maintenance
5
Troubleshooting
6
Basic Breaker Components
7
Lubrication
7
Separation of Front and Rear Frames
7
Replacement - AK Breakers/Akf Breakers
7
Arc Quenchers
7
Pole Unit Assembly
8
Measuring Contact Wipe
9
Measuring Contact Pressure
9
Adjusting Contact Wipe and Pressure
10
Contact Sequence
10
Contact Gap
11
Replacement of Contacts
11
Pole Unit Assembly View
12
Operating Mechanisms
13
Charging the Closing Springs
13
Closing Spring and Charging Mechanism
14
Operating Mechanism
14
Tripping the Breaker
15
Adjustments
15
Replacement
15
Rear View of Front Frame - AK-50
15
Quick Close Breaker Adjustments
16
Quick-Closing Release Latch
16
Release Arm Adjusting
16
Stored-Energy Manual Mechanism
17
Closing the Breaker
17
Inserting the Safety Pin
17
Replacement of Mechanism Parts
17
Contact Adjustments
19
Measurements
19
Adjusting Center-Pole Contact Wipe and Overlap
19
Field Discharge Contacts - Center Pole
19
AKF Mechanism
20
Auxiliary Switch
21
AK Breakers
21
Adjusting Center-Pole Open Contact Gap
21
Contact Replacement
21
Pole Unit Assembly
21
Auxiliary Switch - Standard Breaker
22
Auxiliary Switch Linkage - AKF Breakers
22
Electrical Closing Devices and Controls
23
Protective Devices
23
Cut-Off Switches
23
Static Time Delay Under-Voltage Tripping Device
23
Control Relay
23
Static Time-Delay Undervoltage Tripping Device
24
Static Time Delay Undervoltage Wiring Diagram
24
Undervoltage Lockout Device
25
Instantaneous Under-Voltage Tripping Device
25
Thermostat Wiring Diagram
25
Direct Acting Tripping Device
26
Short Time-Delay Tripping
26
Long Time Delay Tripping
26
Instantaneous Tripping
26
Direct-Acting Tripping Device
27
Series Overcurrent Tripping Device
28
Series Overcurrent Tripping Device
29
Overcurrent Tripping Device EC-2 View
30
Series Overcurrent Tripping Device EC-2, EC-2A, AK-50
31
Long Time-Delay and High-Set Instantaneous Tripping
31
Instantaneous High-Set Tripping
31
Time-Adjusting Indexing
31
Reverse Current Tripping Device
32
Power Sensor Trip - General Description
33
Reverse Current Tripping Device - AK-50 Only
33
False Tripping Caused by Faulty Ground Fault Detection
34
Magnetic Coil Assembly for AK-3-50 Breakers
34
Testing Magnetic Coils
35
Replacement of Power Sensor Components
35
Power Supply
36
Sensor Coils
36
Power Sensor Cabling Diagram
36
Power Sensor Kit
36
Power Sensor Unit View
37
Magnet Trip Device View
37
Selective Tripping
39
Typical Time-Current Characteristics for Overcurrent Trip Devices
39
Long-Time Delay/Short-Time Delay/Instantaneous Time Current Curves
40
Drawout Mechanism
42
Breaker Accessories
43
Primary Disconnects - AK-50 Only
43
Secondary Disconnects
43
Shunt-Tripping Device
44
Bell Alarm and Lockout Device
44
Replacement of Coil
44
Open Fuse Lockout Device
45
Bell Alarm and Lockout Device Diagram
45
Open Fuse Lockout Device Diagram
46
Renewal Parts
47
Recommended Tools
47
Other manuals for GE AK-1-15
Installation And Operation Manual
10 pages
Maintenance Instructions
48 pages
Installation And Operation
7 pages
4
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GE AK-1-15 Specifications
General
Brand
GE
Model
AK-1-15
Category
Circuit breakers
Language
English
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