备用保嗫装置 back-upprotection

轴向位移保嗫装置 axialthrustfailureprotectivedevice ; axialdisplacementprotectivedevice

过电压保嗫装置 overvoltageprotectiondevice

过载保嗫装置 overlondprotectivedevice

超扭保嗫装置 overtorqueprotectiondevice

超速保嗫装置 overspeedprotectivedevice

接地故障保嗫装置 earth-faultprotection

不均衡负载保嗫装置 unbalanceloadprotection