Eaton Cutler-Hammer Digitrip 520M Manuals

Manuals and User Guides for Eaton Cutler-Hammer Digitrip 520M. We have 1 Eaton Cutler-Hammer Digitrip 520M manual available for free PDF download: Instructions Manual

Eaton Cutler-Hammer Digitrip 520M Instructions Manual

Eaton Cutler-Hammer Digitrip 520M Instructions Manual (36 pages)

Brand: Eaton | Category: Circuit breakers | Size: 2.95 MB

Table of Contents

Table of Contents
1
General Description of Digitrip Trip Units
2
Protection
4
Mode of Trip and Status Information
4
Installation and Removal
4
Installation of the Trip Unit
4
Rating Plug Installation
4
Trip Unit/Rating Plug Removal
5
Wiring
6
Plexiglass Cover
6
Ground Alarm/Power Supply Module (520M Models Only)
6
Auxiliary Power
6
Ground Alarm
6
Display Feature (520M Family Only)
7
Standards
7
General Description of Magnum Circuit Breakers
7
General
7
Low Energy Trip Actuator
8
Ground Fault Protection
8
General
9
Residual Sensing
9
Source Ground Sensing
9
Zero Sequence Sensing
9
Multiple Source/Multiple Ground
9
Ground Fault Settings
9
Current Sensors (Magnum Frames Less than or Equal to 3200A)
10
Current Sensors (Magnum Frames Greater than 3200A)
10
Principles of Operation
10
General
10
Trip and Operation Indicators
15
Making Current Release
15
Zone Interlocking (520 Family Only)
15
Protection Settings
19
General
19
Long Delay Current Setting
19
Long Delay Time Setting
19
Short Delay Current Setting
20
Short Delay Time Setting
20
Instantaneous Current Setting
20
Ground Fault Current Setting
21
Ground Fault Time Delay Setting
21
Test Procedures
21
General
21
When to Test
22
Functional Field Testing
22
Performance Testing for Ground Fault Trip Units
22
Code Requirements
22
Standards Requirements
22
General Test Instructions
22
Battery
23
General
23
Battery Check
23
Battery Installation and Removal
24
Frame Ratings (Sensor Ratings and Rating Plugs)
24
Record Keeping
25
References
25
Magnum and Magnum DS Circuit Breakers
25
Time-Current Curves
25
Appendix A Zone Interlocking Examples
29
Appendix B Troubleshooting Guide
31
Appendix C Typical Breaker Master Connection Diagram
33

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