eaton 520M Manuals

Manuals and User Guides for eaton 520M. We have 1 eaton 520M manual available for free PDF download: Operating Manual

eaton 520M Operating Manual

eaton 520M Operating Manual (42 pages)

Series NRX

Brand: eaton | Category: Other | Size: 2.2 MB

Table of Contents

Table of Contents
4
Section 1: General Description of Digitrip Trip Units in Eaton Series NRX Circuit Breakers
6
- Sensors
  6
- Digitrip Trip Unit
  6
- Low-Energy Trip Actuator
  6
- Catalog Number Referencing
  6
- Protection
  6
- Mode of Trip and Status Information
  7
- Installation and Removal
  11
- Trip Unit/Rating Plug Removal
  11
- Wiring
  11
- Plexiglass Cover
  11
- Voltage Supply Input/Alarms
  11
- Display Feature (Digitrip 520M Only)
  12
- Standards
  12
Section 2: Principles of Operation
12
Section 3: Protection Settings
15
- Long Delay Settings
  15
- Short Delay Settings
  16
- Instantaneous Settings
  16
Section 4: Test Procedures
21
- When to Test
  21
- Functional Field Testing
  21
- Functional Test Kit (Handheld)
  21
- Test Procedure
  21
- Ground (Earth) Fault Performance Testing
  21
Section 5: Trip Unit Battery
22
- Battery Check
  22
- Battery Installation and Removal
  22
Section 6: Rating Plugs
23
Section 7: Maintenance Mode Feature
25
Section 8: Communication Adapter Modules (CAM)
25
Section 9: References
26
- Time-Current Curves
  26
- Curve Select
  26
Appendix A: Zone Interlocking Examples
27
Appendix B: Troubleshooting
29
Appendix C: Specifications
30
Appendix D: Performance Testing for Ground Fault Trip Units Primary Injection
31
- Record Keeping
  32
Appendix E: Typical Breaker Master Connection Diagram - NF
35
- Notes for Previous Page
  36
Appendix F: Typical Breaker Master Connection Diagram - RF
37
- Notes for Pages 36 and 37 (Diagram Drawing Number 6D32424 - RF Frame)
  39

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