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DBF-16
Westinghouse DBF-16 User Manual
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2
Table of Contents
Table of Contents
2
Receiving, Handling, and Storing
6
Inspection
6
Storing
6
Part Installation
7
Connections
7
Maintenance
9
Pole Unit
9
Contacts
9
Maintenance of Contacts
9
Operating Mechanism
9
Closing Solenoid
9
Overcurrent Tripping Device
12
Installation and Removal
13
Overtravel Adjus Tment
13
Construction
14
Cross-Sectional View of Series Overcurrent Tripping Device
14
With Long Delay and Instantaneous Elements
14
Time-Current Classification
15
Operation 1
15
Tripping Characteristics of Standard Series Overcurrent Tripping Device with Long Delay and Instantaneous
16
Time-Current Characteristics
17
Adjustment of Calibration Settings
17
Tripping Characteristics of Special Series Overcurrent
21
With Instantaneous Element Only
21
Tripping Characteristics of Selective Series Overcurrent
22
Discriminator for Tripping Device
24
Control Relay
25
Shunt Trip a Ttachment
27
Shunt Trip Attachment - Construction Details
27
Undervoltage Trip a Ttachment 2
28
Reverse Current Trip Attachment
28
Field Discharge Switch
29
Reverse Current Trip Attachment - Construction Details
30
Auxiliary Switch
31
Alarm Switch Attachment
31
E Lectric Lockout Attachment
31
- Field Discharge Switch - Construction D Etails
32
Auxiliary Switch - Construction Details
32
Key Lock Attachment
33
Key Interlock Attachment 3
33
Alarm Switch Attachment- Construction Details
33
Key Lock or Key Interlock Attachment - Construction Details
35
Rectifier Unit for A-C Undervoltage and A-C Electric Lockout
36
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Westinghouse DBF-16 Specifications
General
Tripping Type
Thermal Magnetic
Trip Type
Thermal Magnetic
Standards Compliance
UL 489
Interrupting Rating
10kA
Type
Molded Case Circuit Breaker
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