TRIP SYSTEMS FOR LOW-VOLTAGE (1000 V AND BELOW) AC AND GENERAL PURPOSE (1500 V AND BELOW) DC POWER CIRCUIT BREAKERS
Institute of Electrical & Electronics Engineers
1. Overview
2. Normative references
3. Definitions
4. Preferred trip device current ratings or settings
(amperes)
5. Types and response of direct-acting overcurrent
trip functions
6. Calibration of direct-acting overcurrent trip
functions
7. Delay times of direct-acting overcurrent trip
functions
8. Reverse-current trip devices for general purpose
dc circuit breakers
9. Undervoltage trip devices
10. Tests
11. Software process verification
Annex A (informative) - Illustrative time overcurrent
characteristics
Annex B (informative) - Bibliography
Covers the requirements for direct-acting overcurrent and/or undervoltage protective systems associated with low-voltage power circuit breakers.
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
| Supersedes |
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