IEEE C37.17-2022
$33.58
IEEE Standard for Trip Systems for Low-Voltage (1000 V and below) AC and General Purpose (1500 V and below) DC Power Circuit Breakers (Published)
| Published By | Publication Date | Number of Pages |
| IEEE | 2022 | 31 |
Revision Standard – Active. This standard pertains to the requirements for current and voltage protective functions of 1) direct-acting overcurrent electromechanical trip devices, 2) direct-acting overcurrent electronic trip systems, 3) reverse-current trip systems, and 4) undervoltage trip devices that are integral with low-voltage ac (1000 V and below) and general-purpose low-voltage dc (1500 V and below) power circuit breakers covered by IEEE Std C37.13 and IEEE Std C37.14. Additional information, communication, and/or additional internal or external protective functions or devices are not covered by this standard. This standard should not be interpreted to restrict the inclusion of such functionality in the device.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | IEEE Std C37.17™-2022 Front cover |
| 2 | Title page |
| 4 | Important Notices and Disclaimers Concerning IEEE Standards Documents |
| 8 | Participants |
| 10 | Introduction |
| 11 | Contents |
| 13 | 1. Overview 1.1 Scope 1.2 Word usage |
| 14 | 2. Normative references 3. Definitions |
| 16 | 4. Preferred trip device current ratings or settings (amperes) 5. Trip system self-monitoring 5.1 General |
| 17 | 5.2 Trip system health indication 5.3 Trip actuator circuit integrity 5.4 Current sensing circuit integrity 6. Types and response of direct-acting overcurrent trip functions 6.1 General 6.2 Long-time delay 6.3 Short-time delay 6.4 Instantaneous |
| 18 | 6.5 Neutral overload 6.6 Ground fault 6.7 Functions modifying the response of direct-acting overcurrent trip functions |
| 19 | 7. Requirements for direct-acting overcurrent trip functions 7.1 General 7.2 Long-time delay trip functions (electromechanical devices only) 7.3 Long-time delay trip functions (electronic devices only) 7.4 Short-time delay trip functions 7.5 Instantaneous trip functions (low range electromechanical devices only) |
| 20 | 7.6 Instantaneous trip functions (electronic devices only) 7.7 Neutral overload functions 7.8 Ground fault trip functions 8. Delay times of direct-acting overcurrent trip functions 8.1 Long-time-delay trip functions 8.2 Short-time-delay trip functions 8.3 Short-time-delay ground fault trip function 9. Reverse-current trip devices for general purpose dc circuit breakers 10. Undervoltage trip devices 10.1 General |
| 21 | 10.2 Drop-out voltage range 10.3 Pickup or seal-in voltage 10.4 Maximum operating voltage 11. Tests 11.1 General 12. Software process verification |
| 24 | Annex A (informative) Time-overcurrent characteristics A.1 Sample phase time-overcurrent characteristics and tolerance bands |
| 25 | A.2 Sample ground time-overcurrent characteristics and tolerance bands |
| 26 | A.3 Diagram clarifying Table 3 |
| 27 | Annex B (informative) Arc flash mitigation or energy reduction integral to the trip system |
| 28 | Annex C (informative) Use of trip systems not originally supplied/offered/qualified with the breaker by the original circuit breaker manufacturer |
| 29 | Annex D (informative) Definitions preserved for historical continuity |
| 30 | Annex E (informative) Bibliography |
| 31 | Back cover |
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