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Westinghouse Manuals
Circuit breakers
DB-75
Instructions manual
Westinghouse DB-75 Instructions Manual
Air circuit breakers
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:
Instructions manual
(38 pages)
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Manual
(36 pages)
,
Instructions manual
(32 pages)
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Contents
Table of Contents
Bookmarks
Table of Contents
Table of Contents
Inspection
Receiving, Handling and Storing
Storing
Cuit Breakers
Installation
Connections
Enclosures
Typical
Operating Mechanism
Cross-Sectional View
Part Three MAINTENANCE
Pole Unit
Contacts
Maintenance of Contacts
Closing Solenoid
Adjusting Limits
Overcurrent Tripping Device
Description
Construction
Installation and Removal
Adjustment of Trip Screw
Operation
Standard Overcurrent Tripping Device
Schematic and Typical Time-Current
Selective Overcurrent Tripping Device
Instantaneous Overcurrent Tripping Device (Single Element)
Time-Current Characteristics
Calibration
I Ntenance
Control Relay
Inspection
Maintenance
Shunt Trip
Shunt Trip Attachment
Undervoltage Trip Attachment
Element Only
Alarm Switch Attachment
Maintenance
Auxiliary Switch
Undervoltage Time Delay Attachment
Inspection
Maintenance
Alarm Switch
Electric Lockout Attachment
Inspection
Electrical Lockout
Maintenance
Key Lock Attachment
Key Interlock Attachment
Inspection
Key Lock or
Maintenance
Rectifier Unit for A-C Undervoltage and A-C Electric Lockout Attachments
Reverse Current Trip Attachment
Rectifier Unit
Field Discharge Switch
Recommended Spare Parts
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Summary of Contents for Westinghouse DB-75
Page 1
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Page 2: Table Of Contents
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Page 3
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Page 4
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Page 5
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Page 6
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Page 7: Receiving, Handling And Storing
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Page 8: Installation
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Page 13: Typical
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Page 14: Part Three Maintenance
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Page 15: Cross-Sectional View
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Page 17: Closing Solenoid
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Page 18: Overcurrent Tripping Device
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Page 19: Adjustment Of Trip Screw
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Page 20: Operation
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Page 21: Selective Overcurrent Tripping Device
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Page 22: Instantaneous Overcurrent Tripping Device (Single Element)
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Page 23: Calibration
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Page 24: Control Relay
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Page 25
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Page 26: Undervoltage Time Delay Attachment
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Page 27
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Page 28
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Page 29: Maintenance
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Page 30: Maintenance
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Page 31: Maintenance
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Page 32
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Page 33: Field Discharge Switch
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Page 34: Recommended Spare Parts
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Page 35
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Page 36
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This manual is also suitable for:
Db-100
Dbf-40
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