GE AKR-60-75 Manuals

Manuals and User Guides for GE AKR-60-75. We have 1 GE AKR-60-75 manual available for free PDF download: Maintenance Manual

GE AKR-60-75 Maintenance Manual

GE AKR-60-75 Maintenance Manual (102 pages)

Low Voltage Power Circuit Breakers

Brand: GE | Category: Circuit breakers | Size: 4.12 MB

Table of Contents

Table of Contents
2
SECTION 1-Lntroduction
6
- Inspection and Maintenance
  6
- Renewal Parts
  6
SECTION 2-General Description
8
- Frame Size
  8
- Operation
  8
- Mounting
  9
- Trip Device
  9
- Short Circuit Ratings
  9
SECTION 3-Storage, Safety and Maintenance
11
- Storage
  11
- Safety
  11
- Maintenance
  11
SECTION 4-Breaker Operation
12
- Manual Closing
  12
- Electrical Closing
  12
- Alternate Control Circuit
  13
- Connections
  14
- Stationary Breaker
  14
- Drawout Breaker
  14
- Tripping
  15
- Charging and Closing Using the Maintenance Handle
  15
SECTION 5-Contact Maintenance
16
- Slow Closing the Breaker
  16
- Electrical Breaker
  16
- Manual Breaker
  16
- Arc Quencher Removal and Inspection
  17
- Removal and Replacement
  17
- Separation of Front and Back Frames
  18
- Back Frame Assembly
  20
- Measuring Contact Force
  21
- Stationary Arcing Contacts
  21
- Stationary Main and Intermediate Contacts
  21
- Measuring Contact Wipe
  21
- Adjusting Contact Wipe
  21
- Measuring Contact Open Gap
  23
- Checking Contact Sequence
  24
- Replacement of Contacts
  24
- Stationary Arcing Contacts
  24
- Movable Arcing Contacts
  24
- Movable Main and Intermediate Contacts
  25
- Stationary Intermediate and Main Contacts
  26
- Assembly and Adjustment of Crossbar
  27
SECTION 6-Breaker Maintenance
28
- Safety Precautions
  28
- Lubrication
  28
- Breaker Mechanism Adjustments
  28
- Trip Latch
  28
- Latch Buffer
  28
- Reset Latch Bearing and Prop
  28
- Electrical Mechanism
  30
- Control Components
  30
- Charging Motor
  31
- Motor Operator Unit
  32
- Table
  32
- Table
  33
- Spring Discharge Interlock
  34
- Manual Mechanism
  34
- Mechanism Part Replacement
  35
- Ratchet Pawl Replacement
  37
- Adjustments
  37
- Drawout Mechanism
  38
- Drawout Mechanism Lock
  38
SECTION 7-Accessories
39
- Primary Disconnects
  39
- Aka 75/100
  39
- Aks/Akst 50
  40
- Secondary Disconnects
  41
- Replacement
  41
- Auxiliary Switch
  42
- Replacement
  42
- Adjustments
  43
- Shunt Trip
  43
- Replacement
  43
- Adjustment
  43
- Undervoltage Device
  44
- Replacement
  44
- Adjustment
  44
- Static Time-Delay Undervoltage
  45
- Electric Lockout Device
  46
- Adjustment
  46
- Bell Alarm Device
  47
- Adjustment
  47
- Open Fuse Lockout Device
  48
- Coll Replacement
  48
- Adjustments
  48
SECTION 8-Type SST Overcurrent
49
- Programmer Unit
  49
- Current Sensors
  50
- Replacement of Current Sensors -AKS 50
  52
- Replacement of Current Sensors - AKA 75/100
  53
- Flux Shift Trip Device
  53
- Troubleshooting
  56
- SST Test Set
  56
- Resistance Values
  57
- Equipped with Ground Fault
  57
- SST Cabling Diagrams
  57
- SECTION 9-Type ECS Overcurrent Trip Device
  60
- ECS Cabling Diagram
  61
- Trip Device
  62
- Programmer Unit
  62
- Fault Trip Indicators
  62
- Remote Fault Indication
  62
- Microversatrip Installation
  64
- AKS 50 Installation
  64
- AKR 50/100 Installation
  65
- Current Sensors
  66
- Akr 751100
  67
- Flux Shift Trip Device
  67
- Troubleshooting
  67
- Aks50
  68
- Resistance Values
  68
- False Tripping-Breakers
  69
- Equipped with Ground Fault
  69
- Microversatrip TM Cabling Diagrams
  69
- SECTION 11-RMS-9/Epic Microversatrip
  73
- Fault Trip Indicators
  73
- Programmer Unit
  73
- Rms-9
  73
- Epic Microversatrip Installation
  73
- Current Sensors
  74
- Table 19
  77
- Flux Shifter Trip Device
  77
- Replacement of Current Sensors
  77
- Troubleshooting
  77
- Resistance Values
  77
- False Tripping-Breakers Equipped with Ground Fault
  78
- Cabling Diagrams
  78
- SECTION 12-Microversatrip
  81
- Plus and
  81
- Microversatrip PM Trip Units
  81
- Trip Unit
  81
- Read this First
  82
- Product Structure
  82
- Trip Unit Removal and Replacement
  83
- Phase Current Sensors
  84
- Neutral Current Sensors
  85
- Rating Plug Removal and Replacement
  85
- Trip Unit Functions
  85
- Trouble-Shooting Guide
  86
- SECTION 13-Type EC Overcurrent Trip Device
  87
- Direct Acting Tripping Device EC-1 B
  89
- Long Time Delay Tripping
  89
- Short Time Delay Tripping
  89
- Instantaneous Tripping - High Set
  89
- Instantaneous Tripping - Low Set
  89
- Replacement
  89
- Adjustments
  90
- Series Overcurrent Tripping Device EC-2A
  91
- Long Time-Delay and High Set
  91
- Instantaneous Tripping
  91
- Instantaneous Low Set Tripping
  91
- Instantaneous High Set Tripping
  91
- Serles Overcurrent Tripping Device EC-1
  93
- Short Time-Delay Tripping
  93
- Long Time-Delay Tripping
  93
- Instantaneous Tripping
  94
- Adjustment
  94
- Positive Trip Adjustment
  94
- Reverse Current Tripping Device
  95
- Adjustments
  96
- Replacements
  96
- Switchette Feature
  96
- Trip Device Replacement
  96
- SECTION 14-Electrical Characteristics
  97
- Charging and Closing Operating Currents
  97
- Beil Alarm Contact-Rating
  97
- Auxiliary Switch Contact Sequence
  97
- Auxiliary Switch Contact Ratings
  97
- Charging Times
  97
- Shunt Trip and Undervoltage Device
  98
- Coil Resistance
  98
- Instantaneous Undervoltage Device Settings
  99
- Time-Delay Undervoltage Device Settings
  99

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