GE AK-50 Series - User Manual

GEK
-
7303
C
*
A
Lowvoltage
Power
Circuit
Breakers
Maintenance
Instructions
'
Supersedes
GEH
-
1798
A
GEH
-
1799
GEH
-
1823
G
El
-
5021
OA
GEI
-
50211
GEI
-
50212
A
GEI
-
57077
G
El
-
74600
Types
AK
-
50
/
75
/
100
,
AKT
-
50
,
AKU
-
50
,
and
AKF
-
2
C
/
2
D
/
2
E
NOTE
:
To
be
used
in
conjunction
with
GEl
-
86135
which
covers
Types
AK
-
75
/
100
breakers
with
ECS
and
SST
trip
devices
.
ELECTRIC
GENERAL
Courtesy of NationalSwitchgear.com

GE AK-50 Series Specifications

General

Brand	GE
Model	AK-50 Series
Category	Circuit breakers
Language	English

Summary

Maintenance

Inspection

Trouble Shooting

Separation of Front and Rear Frames

Pole Unit Assembly

Operating Mechanisms

Electrically and Manual Operating Mechanisms

Quick Close Breaker Adjustments

Stored-Energy Manual Mechanism

Electrical Closing Devices and Controls

Protective Devices

Static Time Delay Undervoltage Tripping Device

Description of the static time delay undervoltage tripping device.

Instantaneous Undervoltage Tripping Device

Description of the instantaneous undervoltage tripping device.

Undervoltage Lockout Device

Direct Acting Tripping Device EC-1 B

EC-1 B Short Time-Delay Tripping

Operation of the short time-delay tripping mechanism.

EC-1 B Long Time Delay Tripping

Operation of the long time-delay tripping mechanism.

EC-1 B Instantaneous Tripping

Operation of the instantaneous tripping mechanism.

Series Overcurrent Tripping Device EC-1

EC-1 Short Time-Delay Tripping

Mechanism for short time-delay tripping in EC-1 device.

EC-1 Long Time Delay Tripping

Mechanism for long time-delay tripping in EC-1 device.

EC-1 Instantaneous Tripping

Mechanism for instantaneous tripping in EC-1 device.

EC-1 Adjustments

EC-1 Replacement

Overcurrent Tripping Device EC-2

Series Overcurrent Tripping Device EC-2;EC-2 A

EC-2;EC-2 A Long-Time;High-Set Tripping

Operation of EC-2/EC-2A with long-time and high-set instantaneous tripping.

EC-2;EC-2 A Instantaneous Low-Set Tripping

Operation of EC-2/EC-2A with low-set instantaneous tripping.

EC-2;EC-2 A Instantaneous High-Set Tripping

Operation of EC-2/EC-2A with high-set instantaneous tripping.

Reverse Current Tripping Device

Reverse Current Tripping Device Adjustments

Reverse Current Tripping Device Replacement

Power Sensor Trip

Power Sensor Trip General Description

Power Sensor Trip Maintenance

False Tripping due to Ground Fault Detection

Power Sensor Component Replacement

Power Sensor Unit Replacement

Trip Solenoid Replacement

Power Supply Replacement

Sensor Coils (AK-3-50) Replacement

Ground Fault System

Selective Tripping

Breaker Accessories

Primary Disconnects

Secondary Disconnects

Drawout Mechanism

Shunt-Tripping Device

Shunt-Tripping Device Adjustments

Shunt-Tripping Device Coil Replacement

Bell Alarm and Lockout Device

Bell Alarm;Lockout Device Adjustments

Open Fuse Lockout Device

Open Fuse Lockout Device Operation

Open Fuse Lockout Device Adjustments