Phase-failure protection的意思|示意

Zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for ACF sub-bank.

针对单纯采用相电流判据的不足之处，本文提出增加零序电流、负序电流及电流变化量判据，以有效地避免保护误动或者拒动。

The utility model relates to a phase-failure protection, especially relates to an open-phase protector used in the electrical equipment.

本实用新型涉及一种断相保护装置，尤其涉及一种用于电气设备的断相保护器。

The designed installation is mainly used in synthetic protection of small AC motor. It has the functions of phase failure protection and overload short protection.

本设计装置主要用于中小型交流电动机的综合保护，它具有断相、过载短路保护功能。

The phase-failure protection can be widely used in the electrical equipment without open-phase protection to make the control part free of the unnecessary damage of the open circuit failure.

此断相保护装置可广泛应用于无缺相保护的电气设备中，使设备控制部件免于遭受断路故障的不必要的损坏。

If only phase current is used in breaker failure protection, miss trip may occur no matter the threshold of current is higher or lower than load current.

如果仅采用相电流判据，将无法避免失灵保护误动或者拒动。

Able to directly control AC 50Hz, 380V asynchronous motor with the protection of overload, phase-failure and voltage-absent.

可控制交流50Hz，380V，三相异步电动机的直接起动停止，并具有过载和 断相及失压保护。