C37.17-2012 - IEEE Standard for Trip Systems for Low-Voltage (1000 V and below) AC and General Purpose (1500 V and below) DC Power Circuit Breakers

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Standard Details

Requirements for direct acting current and voltage protective functions of direct-acting overcurrent electromechanical trip devices, direct-acting overcurrent electronic trip systems, reverse-current trip systems for dc circuit breakers, and undervoltage trip devices that are integral with low-voltage ac (1000 V and below) and general purpose low-voltage dc (1500 and below) power circuit breakers covered by IEEE Std C37.13(TM), IEEE Std C37.14(TM), and IEEE Std C37.16(TM) are included in this standard. Additional information, communication and/or additional internal or external protective functions or devices are not covered (but also not restricted) by this standard.

Standards Committee	PE/SWG - Switchgear
Status	Active
Board Approval	2012-06-08
History	Published Date:2012-09-18

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PAR	Approved PAR

Working Group Details

Working Group	LVSD-WG_C37.17 - LVSD - Standard for Direct-Acting Trip Systems for Low-Voltage (up to 635 V) AC and General Purpose Low Voltage (up to 325 V) DC Power Circuit Breakers
Working Group Chair	Jeffery Mizener
Standards Committee	PE/SWG - Switchgear
Society	IEEE Power and Energy Society
IEEE Program Manager	Ashley Moran
Active Projects	Active PC37.17 - Standard for Trip Systems for Low-Voltage (1000 V and below) AC and General Purpose (1500 V and below) DC Power Circuit Breakers This standard pertains to the requirements for direct acting current and voltage protective functions of: a) direct-acting overcurrent electromechanical trip devices b) direct-acting overcurrent electronic trip systems c) reverse-current trip systems for dc circuit breakers d) undervoltage trip devices that are integral with low-voltage ac and dc power circuit breakers covered by IEEE Std C37.13, and IEEE Std C37.14. This standard describes the requirements for available settings and time delay characteristics for preferred protective functions as well as their operational and calibration requirements. The functional requirements for the overall circuit breaker, including test requirements (whethere design, production, or conformance) are specified in the latest versions of IEEE Std C37.13, IEEE Std C37.14, and ANSI C37.50. This standard does not restrict the inclusion of additional internal or external functionality in the trip system or device.
Existing Standards	Superseded C37.17-1997 - American National Standard for Trip Devices for AC and General Purpose DC Low Voltage Power Circuit Breakers This standard pertains to the requirements for direct acting current and voltage protective functions of: 1) direct-acting overcurrent electro-mechanical trip devices 2) direct-acting overcurrent electronic trip system 3) reverse-current trip systems 4) undervoltage trip devices that are integral with low voltage AC and DC power circuit breakers covered by ANSI/IEEE C37.13, ANSI/IEEE C37.14, and ANSI C37.16. 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.