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["다有多大电机功率,需要用到软启动?",,"다有多大电机功率,需要用到软启动? 18.5KW二级 33KW二级",,"일반적으로 회로 스위치와 장비가 시작에 대한 요구사항에 따라,就看电和设备的承受能力,没有固定数值界定\n몇 천 와트에도 감압/소프트스타트가 필요하고 몇 천 킬로와트에도 직접 시작이 필요한 경우가 있습니다.你应该分别问下电气部门和设备部门,没有特殊要求的话,直接启动应该没有问题的。",,"위층이 말한 것은 완전히 옳습니다.과功率没有关系,只和电网有关系\n主要是和供电变压器和线路阻抗有关系\n启动时造成母线压降一般不低于85%就不用设计软启动七".,"https://bbs.hcb.com/thread-

2019-07-13View Original

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多大电机功率,需要用到软启动? 18.5KW二级 30KW二级
Reply #22019-07-13
一般视电路开关和设备对于启动方面的需求而定,就看电和设备的承受能力,没有固定数值界定,几千瓦有用降压/软启动的,上千千瓦也有直接启动的,你应该分别问下电气部门和设备部门,没有特殊要求的话,直接启动应该没有问题的。
Reply #32019-07-13
楼上说的完全正确,和功率没有关系,只和电网有关系,主要和供电变压器和线路阻抗有关系,启动时造成母线压降一般不低于85%就不用设计软启动七
Reply #42019-07-13
https://bbs.hcbbs.com/thread-2723731-1-1.html,每日一题:判断:电机的启动时间越长,启动电流越低。( ) @sdscj0122,您还没有回答我请教的问题呢: sdscj0122:我可以负责任的告诉版主,电机的启动电流和启动时间无关,启动完成之前一直为固定值; 我:1、难道只是持续时间不同,发热量不同? 2、您的意思是对于既定电机启动电流是有上限值的,达到上限电流后电流保持不变只是持续时间长短而已? 3、在某个电流值以下是有启动电流大小的区别?
Reply #52019-07-31
我们10Kv,500多千瓦的电机一样直接启

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