GE AKR-30 Series Maintenance Manual page 82

SECTIO N 1
1 .0 I NTRODUCTION
1 . 1 I nspection and M ai ntenance
1 .2 Renewal Parts
SECTIO N 2
2.0 G E N E RAL DESCRI PTION
2. 1 Frame Size
2.2 Operation
2.3 Fused/Non-Fused
2.4 Mounting
2.5 Trip Device
2.6 Model N u m ber
2.7 Short Circuit Ratings
SECTIO N 3
3.0 STORAG E
3 . 1 Safety
3.2 M aintenance
SECTIO N 4
4.0
DRAWOUT BREAKER
I NTERCHANGEABI LITY
SECTI O N 5
B REAKER OPERATION
5.0
5.1 M anual Closing
5.2 Electrical Closi n g
5.2.1 Alternate Control Circuit
5.3
Mechanism Operation
5.4 Charg i ng Using The
Maintenance Handle
SECTION 6
6.0 I NTERLOCKS
6.1
Racking M echanism I nterlock
6.2 Positive I nterlock
6.3
Closing Spring I nterlock
6.4 Discon nect Position I nterlock
6.5 Padlocks
6.6
Key I nterlock-Stationary
Breaker
6.7
Optional I nterlocks
SECTIO N 7
7.0
BREAKER MAI NTENANCE
7. 1 Lubrication
7.2 M an ual H andle Adj ustment
7.3
Drawout Mechanism Position
7.4
Slow Closi ng the Breaker
7.5 Primary Disconnects
7.5. 1
Replacement
7.5.2
Adjustment
2
Low Voltage Power Circuit Brea kers
Table of Contents
Page
4 SECTIO N 7
4 7.6 Auxil iary Switch
7.6. 1
4 Replacement
7.6.2
Adj ustment
4
7.7 Shunt Trip
6
7. 7. 1
Replacement
7.7.2 Adj ustment
6
U ndervoltage Device
7.8
6
Replacement
7.8. 1
6
Operational Check
7.8.2
6
7.8.3 Adjustments
8
7.8.4 Factory Settings
8
8 7.9 Static Time-Delay Undervoltage
9 7.9.1
Adjustments
7.10 Electric Lockout Device
1 0
7.1 1 Bell A larm
1 0
7.1 1 .1 Operation
1 0
7.1 1 .2 Adjustments
1 0A
7. 1 1 .3 Replacement
7. 1 2 Electrical Control Components
1 0
7. 1 2. 1 Component Replacement
7. 1 2.2 F and G Switch Adjustment
1 0B
7. 1 3 Drawout Mechan ism
Buffer Assembly
7.14
1 1
7.14.1
Buffer Adj ustment
1 1
7. 1 5 Tri p Latch Adj ustment
1 1
8
SECTI O N
1 1
1 2
8 . 0 CONTACT MAI NTENA N C E
1 3
8 . 1 Arc Chute Removal & I nspection 33
8.2 Contact Adjustment -
13
AKR 30/30H/30L & A K R U 30
1 5
8 . 3
Co ntact Adj ustment - AKR
50/50H & A K R U 5 0 & A K R 30L
1 5
8 . 4 C ontact Adjustment -
1 5
A KRT 50/5 0H
1 6
8.5 Stationary Contact Identification 38
1 6
8 . 6 Contact Replacement -
1 7
AKR 30/30H & A K R U 30
1 7
8 . 7 Contact Replacement - A K R
50/50H , AKRU 50 & AKRT 50/5 0H 39
1 8
1 8
SECTIO N 9
1 8
9.0 FUSED B REAKER
9.1 Fuse Sizes and Mounting
18
9.2 Special 2500A Fuse For AKRU 50 41
1 8
9.3 Open Fuse Lockout Device
1 9
9.3. 1 Type A and B Breaker
20
OFLO Adjustment
20
9.3.2 Type D B reaker
2 1
OFLO Adj ustment
22
22
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3 6
3 7
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