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Circuit breakers
DB-75
Westinghouse DB-75 Manuals
Manuals and User Guides for Westinghouse DB-75. We have
4
Westinghouse DB-75 manuals available for free PDF download: Instructions Manual, Manual
Westinghouse DB-75 Instructions Manual (36 pages)
Air Circuit Breakers
Brand:
Westinghouse
| Category:
Circuit breakers
| Size: 5.36 MB
Table of Contents
Table of Contents
2
Inspection
7
Receiving, Handling and Storing
7
Storing
7
Cuit Breakers
7
Installation
8
Connections
8
Enclosures
8
Typical
13
Operating Mechanism
14
Cross-Sectional View
15
Part Three MAINTENANCE
14
Pole Unit
14
Contacts
14
Maintenance of Contacts
14
Closing Solenoid
17
Adjusting Limits
17
Overcurrent Tripping Device
18
Description
18
Construction
18
Installation and Removal
18
Adjustment of Trip Screw
19
Operation
20
Standard Overcurrent Tripping Device
20
Schematic and Typical Time-Current
20
Selective Overcurrent Tripping Device
21
Instantaneous Overcurrent Tripping Device (Single Element)
22
Time-Current Characteristics
22
Calibration
23
I Ntenance
23
Control Relay
24
Inspection
24
Maintenance
24
Shunt Trip
24
Shunt Trip Attachment
24
Undervoltage Trip Attachment
24
Element Only
24
Alarm Switch Attachment
26
Maintenance
29
Auxiliary Switch
26
Undervoltage Time Delay Attachment
26
Inspection
26
Maintenance
26
Alarm Switch
29
Electric Lockout Attachment
29
Inspection
29
Electrical Lockout
29
Maintenance
30
Key Lock Attachment
29
Key Interlock Attachment
30
Inspection
30
Key Lock or
30
Maintenance
31
Rectifier Unit for A-C Undervoltage and A-C Electric Lockout Attachments
30
Reverse Current Trip Attachment
30
Rectifier Unit
31
Field Discharge Switch
33
Recommended Spare Parts
34
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Westinghouse DB-75 Instructions Manual (32 pages)
Air Circuit Breaker
Brand:
Westinghouse
| Category:
Circuit breakers
| Size: 1.59 MB
Table of Contents
Table of Contents
2
Inspection
6
Storing
7
Pole Unit
10
Overcurrent Tripping Device
10
Closing Solenoid - Construction Details
13
Construction
15
Installation and Removal
15
Operation
15
Overcurrent Tripping Device with Long Delay and Instantaneous Elements
16
Cross-Sectional View of Overcurrent Tripping Device with Long Delay and Short Delay E Lements
18
Instantaneous Element Only
20
Time Current Characteristics
21
Maintenance
21
Shunt Trip Attachment
24
Undervoltage Trip Attachment
24
Undervoltage Trip Attachment - Construction Details
24
Key Interlock Attachment
30
Attachments
30
Lockout Attachments
31
Westinghouse DB-75 Instructions Manual (38 pages)
Air Circuit Breakers
Brand:
Westinghouse
| Category:
Circuit breakers
| Size: 2.36 MB
Table of Contents
Table of Contents
2
Inspection
3
Part Three
3
Maintenance
19
Adjustment of Trip Screw
19
Tripping Device ( Single Element )
19
Time Current Characteristics
24
Maintenance
24
Control Relay
24
Inspection
24
Undervoltage Trip Attachment
24
Auxiliary Switch
24
Maintenance
32
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Westinghouse DB-75 Manual (36 pages)
Air Circuit Breakers
Brand:
Westinghouse
| Category:
Circuit breakers
| Size: 20.42 MB
Table of Contents
Table of Contents
3
Alarm Switch Attachment
26
Inspection
26
Maintenance
26
Maintenance
27
Maintenance
31
Inspection
33
Maintenance
33
Field Discharge Switch
33
Recommended Spare Parts
34
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