商铺名称:广州鸿懿电气设备有限公司
联系人:琚健(先生)
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企业邮箱:247908851@qq.com
联系地址:广州市白云区鹤龙街鹤龙一路208号YH城C座408
邮编:510000
联系我时,请说是在智能安防网上看到的,谢谢!
大连软启动3RW3046-1BB04
软启动代理 软启动直销 软启动特价
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运用串接于电源和被控电机之间的软起动器,控制其内部的晶闸管的导通角,使电机输入电压从零以预设函数讨论渐渐上升,直至起动完毕,付与电机全电压,即为软起动, 软起动器在软起动历程中,电机起动转矩渐渐增长,转速也渐渐增长。软起动一样通常有下面几种起动措施。
斜坡升压软起动
这种起动措施最约莫,没有具备电流闭环控制,仅调停晶闸管导通角,使之与时分成肯定函数讨论增长。其缺点是,由于不限流,在电机起动历程中,偶然要产生较大的打击电流使晶闸管破坏,对电网影响较大,实践很少利用。
斜坡恒流软起动
这种起动措施是在电动机起动的初始时期起动电流渐渐增长,当电流抵达预先所设定的值后对峙稳固(t1至t2时期),直至起动结束。起动历程中,电流上升改造的速率是可以大概约莫凭据电动机负载调停设定。电流上升速率大,则起动转矩大,起动时分短。该起动措施是利用最多的起动措施,分外实用于风机、泵类负载的起动。
阶跃起动
开机,即以最短时分,使起动电流敏捷抵达设定值,即为阶跃起动。委曲调治起动电流设定值,可以大概约莫抵达敏捷起举措用。
脉冲打击起动
在起动开端时期,让晶闸管在极短时分内,以较大电流导通一段时分后回落,再按原设定值线性上升,连入恒流起动。该起动措施,在一样通常负载中较少利用,实用于重载并需克服较大静摩擦的起动场所。软起动与传统减压起动措施的差另外地方在那里?笼型电机传统的减压起动措施有Y-q 起动、自耦减压起动、电抗器起动等。这些起动措施都归于有级减压起动,存在明显缺点,即起动历程中出现二次打击电流。软起动与传统减压起动措施的差另外地方是:(1)无打击电流。软起动器在起动电机时,委曲渐渐增大晶闸管导通角,使电机起动电流从零线性上升至设定值。(2)恒流起动。软起动器可以大概约莫引入电流闭环控制,使电机在起动历程中对峙恒流,包管电机牢固起动。(3)凭据负载状态及电网继电掩护特性选择,可自由地无级调停至最佳的起动电流。 实用于重载并需克服较大静摩擦的起动场所。如风机
电压双斜坡起动
在起动历程中,电机的输着力矩随电压增长,在起动时供应一个初始的起动电压Us,Us凭据负载可调,将Us调到大于负载静磨擦力矩,使负载能立即开端转动。这时输出电压从Us开端按肯定的斜率上升(斜率可调),电机不停加速。当输出电压抵达达速电压Ur时,电机也根基抵达分外转速。软起动器在起动历程中主动查抄达速电压,当电机抵达分外转速时,使输出电压抵达分外电压。
限流起动
便是电机的起动历程中捆绑其起动电流不超过某一设定值(Im)的软起动措施。其输出电压从零开端敏捷增长,直到输出电流抵达预先设定的电流限值Im,然后对峙输出电流I这种起动措施的优点是起动电流小,且可按必要调停。对电网影响小,其缺点是在起动时难以知道起动压降,不能充实利用压降空间。
运用串接于电源和被控电机之间的软起动器,控制其内部的晶闸管的导通角,使电机输入电压从零以预设函数讨论渐渐上升,直至起动结束,付与电机全电压,即为软起动, 软起动器在软起动历程中,电机起动转矩渐渐增长,转速也渐渐增长。软起动一样通常有下面几种起动措施。
斜坡升压软起动
这种起动措施最约莫,没有具备电流闭环控制,仅调停晶闸管导通角,使之与时分成肯定函数讨论增长。其缺点是,由于不限流,在电机起动历程中,偶然要产生较大的打击电流使晶闸管破坏,对电网影响较大,实践很少利用。
斜坡恒流软起动
这种起动措施是在电动机起动的初始时期起动电流渐渐增长,当电流抵达预先所设定的值后对峙稳固(t1至t2时期),直至起动结束。起动历程中,电流上升改造的速率是可以大概约莫凭据电动机负载调停设定。电流上升速率大,则起动转矩大,起动时分短。该起动措施是利用最多的起动措施,分外实用于风机、泵类负载的起动。
阶跃起动
开机,即以最短时分,使起动电流敏捷抵达设定值,即为阶跃起动。委曲调治起动电流设定值,可以大概约莫抵达敏捷起举措用。
脉冲打击起动
在起动开端时期,让晶闸管在极短时分内,以较大电流导通一段时分后回落,再按原设定值线性上升,连入恒流起动。该起动措施,在一样通常负载中较少利用,实用于重载并需克服较大静摩擦的起动场所。软起动与传统减压起动措施的差另外地方在那里?笼型电机传统的减压起动措施有Y-q 起动、自耦减压起动、电抗器起动等。这些起动措施都归于有级减压起动,存在明显缺点,即起动历程中出现二次打击电流。软起动与传统减压起动措施的差另外地方是:(1)无打击电流。软起动器在起动电机时,委曲渐渐增大晶闸管导通角,使电机起动电流从零线性上升至设定值。(2)恒流起动。软起动器可以大概约莫引入电流闭环控制,使电机在起动历程中对峙恒流,包管电机牢固起动。(3)凭据负载状态及电网继电掩护特性选择,可自由地无级调停至最佳的起动电流。 实用于重载并需克服较大静摩擦的起动场所。如风机
电压双斜坡起动
在起动历程中,电机的输着力矩随电压增长,在起动时供应一个初始的起动电压Us,Us凭据负载可调,将Us调到大于负载静磨擦力矩,使负载能立即开端转动。这时输出电压从Us开端按肯定的斜率上升(斜率可调),电机不停加速。当输出电压抵达达速电压Ur时,电机也根基抵达分外转速。软起动器在起动历程中主动查抄达速电压,当电机抵达分外转速时,使输出电压抵达分外电压。
限流起动
便是电机的起动历程中捆绑其起动电流不超过某一设定值(Im)的软起动措施。其输出电压从零开端敏捷增长,直到输出电流抵达预先设定的电流限值Im,然后对峙输出电流I这种起动措施的优点是起动电流小,且可按必要调停。对电网影响小,其缺点是在起动时难以知道起动压降,不能充实利用压降空间。