定价： 263元

定价： 904元

定价： 398元

This guide includes description of acceptable protective relay practices applied to power system shunt reactors. The guide covers protection for dry-type (air-core) and oil-immersed type reactors connected to power system buses and lines. Also included in this guide is the protection of oil-immersed reactors equipped with auxiliary power windings.

定价： 106元

The scope of the original standard was a guide for acceptable methods and configurations for the protection of shunt reactors. This PAR's intent is to make the existing guide more comprehensive by including reactor configurations and reactor protection schemes not now in the guide. Review and updating of the existing guide is needed to consider protection of shunt reactors with auxiliary power windings, improved turn-to-turn fault protection, use of digital/microprocessor relays and other items… read more specific to shunt reactor protection as brought before the working group. read less

定价： 87元

This guide includes descriptions of acceptable protective relay practices applied to power system shunt reactors. The guide covers protection for dry-type air-core and oil-immersed-type reactors connected to power system buses and lines. Also included in this guide is the protection of oil-immersed reactors equipped with auxiliary power windings.

定价： 107元 / 折扣价： 91 元

This guide applies to transformers referenced in IEEE Std C57.12.00 as Categories I, II, III, and IV.1 It sets forth recommendations essential for the application of overcurrent protective devices applied to limit the exposure time of transformers to short-circuit currents (see IEEE Std C37.91™ [B2]).2 This guide is not intended to imply overload capability.

定价： 57元 / 折扣价： 49 元