...因为,虽然并列时一次是并列运行,但由于1#、2#PT的实际特性不是完完全全一致,致使二次电压有相差,如果靠电压切换继电器(YQJ)的接点来切换二次电压,长期可能使其接点烧损,导致接触不良或粘连,发生设备事故: ⑴、接触不良可能造成保护失压误动; ...
基于16个网页-相关网页
介绍了一种能够可靠切换混合动力汽车高电压、直流电机负载的继电器解决方案。
This text introduces a relay solution of reliably switching high-voltage DC motor load for Hybrid Electric Vehicle.
对受端继电器,提出仅利用保护安装处的电压变化值构成同相点切换判据,可以有效降低系统参数的影响。
For the receiving end, a new switching criterion based on the bus voltage is described, which is immune to the system parameters.
干簧继电器也适于如高射频切换、极低电压和电流切换的特殊应用场合。
They are also suitable for high RF switching and low current switching.
应用推荐