500Vdc）比较大(da)(da)容抗10pf使(shi)用温度范围(wei)-30℃~+75℃电(dian)(dian)(dian)网频率(lv)47-63Hz㈥不同电(dian)(dian)(dian)流(liu)等级(ji)的(de)(de)(de)固体(ti)继电(dian)(dian)(dian)器的(de)(de)(de)外(wai)形㈦LSR的(de)(de)(de)输(shu)入驱(qu)动(dong)(dong)电(dian)(dian)(dian)路在(zai)逻辑(ji)电(dian)(dian)(dian)路驱(qu)动(dong)(dong)时(shi)应尽可(ke)(ke)能采(cai)(cai)用低电(dian)(dian)(dian)平(ping)输(shu)出进行驱(qu)动(dong)(dong)，以保(bao)证有足够的(de)(de)(de)带负载(zai)能力和(he)尽可(ke)(ke)能低的(de)(de)(de)零电(dian)(dian)(dian)平(ping)。下图(tu)为正确的(de)(de)(de)灌(guan)电(dian)(dian)(dian)流(liu)驱(qu)动(dong)(dong)的(de)(de)(de)电(dian)(dian)(dian)路图(tu)（一般适(shi)合(he)于(yu)D3、D2型(xing)(xing)）：D1型(xing)(xing)（4-8Vdc）通常与单(dan)相(xiang)(xiang)或三(san)相(xiang)(xiang)LSR移相(xiang)(xiang)触(chu)发器配合(he)使(shi)用。A3型(xing)(xing)（90-430Vac）为交流(liu)控制交流(liu)型(xing)(xing)，在(zai)90-430Vac极宽(kuan)的(de)(de)(de)范围(wei)内(nei)均能可(ke)(ke)靠触(chu)发继电(dian)(dian)(dian)器导通，且输(shu)入与输(shu)出没(mei)有相(xiang)(xiang)位要求(qiu)：㈧LSR过压(ya)(ya)的(de)(de)(de)保(bao)护(hu)：除(chu)LSR内(nei)部(bu)本身有RC吸(xi)收回(hui)路保(bao)护(hu)外(wai)，还(hai)可(ke)(ke)以采(cai)(cai)取(qu)并联(lian)金(jin)属(shu)氧化物压(ya)(ya)敏电(dian)(dian)(dian)阻(zu)(zu)（MOV），MOV面积大(da)(da)小决(jue)(jue)定(ding)吸(xi)收功率(lv)，MOV的(de)(de)(de)厚度决(jue)(jue)定(ding)保(bao)护(hu)电(dian)(dian)(dian)压(ya)(ya)值。一般220V系列(lie)LSR可(ke)(ke)选取(qu)500V-600V的(de)(de)(de)压(ya)(ya)敏电(dian)(dian)(dian)阻(zu)(zu)，380V系列(lie)SSR可(ke)(ke)选取(qu)800V-900V的(de)(de)(de)压(ya)(ya)敏电(dian)(dian)(dian)阻(zu)(zu)，480V系列(lie)SSR可(ke)(ke)选取(qu)1000V-1100V的(de)(de)(de)压(ya)(ya)敏电(dian)(dian)(dian)阻(zu)(zu)。㈨LSR的(de)(de)(de)功率(lv)扩展(zhan)：本公司生(sheng)产(chan)的(de)(de)(de)2A、8A无RC吸(xi)收回(hui)路的(de)(de)(de)LSR可(ke)(ke)用于(yu)任何(he)大(da)(da)电(dian)(dian)(dian)流(liu)等级(ji)的(de)(de)(de)可(ke)(ke)控硅触(chu)发，功率(lv)扩展(zhan)后仍具有过零特(te)性(xing)或随机(ji)特(te)性(xing)。功率(lv)扩展(zhan)LSR的(de)(de)(de)型(xing)(xing)号(hao)为：LSR-3P02E（D3/D2/D1/A3），LSR-3P08E（D3/D2/D1/A3）。正高(gao)电(dian)(dian)(dian)气以质量为生(sheng)命”保(bao)障(zhang)产(chan)品(pin)品(pin)质。大(da)(da)连稳流(liu)稳压(ya)(ya)模块报价

晶闸管模块的工作条件：

1.当晶(jing)(jing)闸(zha)(zha)(zha)管模块承受(shou)正(zheng)向阳极电(dian)(dian)压时，只有在(zai)门级承受(shou)正(zheng)向电(dian)(dian)压时，晶(jing)(jing)闸(zha)(zha)(zha)管才打开(kai)。此(ci)时，晶(jing)(jing)闸(zha)(zha)(zha)管处于正(zheng)导(dao)通状(zhuang)态，这(zhei)就是晶(jing)(jing)闸(zha)(zha)(zha)管的晶(jing)(jing)闸(zha)(zha)(zha)管特性(xing)(xing)，即可控(kong)特性(xing)(xing)。

2.晶闸管(guan)模块开着时，只(zhi)要有一定的正极(ji)电压(ya)，不管(guan)门(men)级(ji)电压(ya)是多少，晶闸管(guan)都继(ji)续工作，即晶闸管(guan)接通后，门(men)级(ji)就失去了功能。门(men)级(ji)只(zhi)会起到(dao)触发的作用。

3.当主电(dian)路(lu)电(dian)压（或电(dian)流(liu)）降至接近零时(shi)，当主电(dian)路(lu)电(dian)压（或电(dian)流(liu)）降为零时(shi)，晶(jing)闸管(guan)模块被关闭。

4.当晶闸(zha)管(guan)模块承(cheng)受反(fan)向阳极电压(ya)时，无论门级(ji)承(cheng)受何(he)种电压(ya)，晶闸(zha)管(guan)都处于(yu)反(fan)向闭(bi)锁状(zhuang)态。在(zai)中频炉中整流侧关断时间(jian)采(cai)用KP-60微(wei)秒以内，逆变侧关短时间(jian)采(cai)用KK-30微(wei)秒以内。四川(chuan)双向晶闸(zha)管(guan)模块正(zheng)高(gao)电气(qi)公司在(zai)多年(nian)积累的客户好(hao)口碑(bei)下，不但在(zai)产品规格配套(tao)方面(mian)占据优势。

产生足够大的(de)(de)(de)极(ji)(ji)电(dian)(dian)(dian)(dian)极(ji)(ji)电(dian)(dian)(dian)(dian)流(liu)(liu)Ic2流(liu)(liu)过(guo)PNP管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)发(fa)射(she)结(jie)，并提(ti)高(gao)了PNP管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)电(dian)(dian)(dian)(dian)流(liu)(liu)放(fang)大系数a1,产生更大的(de)(de)(de)极(ji)(ji)电(dian)(dian)(dian)(dian)极(ji)(ji)电(dian)(dian)(dian)(dian)流(liu)(liu)Ic1流(liu)(liu)经(jing)NPN管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)发(fa)射(she)结(jie)。这(zhei)样强烈的(de)(de)(de)正(zheng)反馈过(guo)程迅(xun)速(su)进行(xing)。从图3，当(dang)(dang)(dang)a1和(he)a2随发(fa)射(she)极(ji)(ji)电(dian)(dian)(dian)(dian)流(liu)(liu)增加(jia)而(er)(er)（a1+a2）≈1时(shi)，式(shi)（1—1）中的(de)(de)(de)分母1-（a1+a2）≈0,因此提(ti)高(gao)了晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)阳(yang)极(ji)(ji)电(dian)(dian)(dian)(dian)流(liu)(liu)Ia.这(zhei)时(shi)，流(liu)(liu)过(guo)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)电(dian)(dian)(dian)(dian)流(liu)(liu)完全由(you)主回路(lu)(lu)的(de)(de)(de)电(dian)(dian)(dian)(dian)压和(he)回路(lu)(lu)电(dian)(dian)(dian)(dian)阻(zu)决定。晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)已(yi)处于正(zheng)向(xiang)(xiang)导(dao)通(tong)(tong)状态(tai)。式(shi)（1—1）中，在晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)导(dao)通(tong)(tong)后，1-（a1+a2）≈0,即(ji)使此时(shi)门(men)(men)极(ji)(ji)电(dian)(dian)(dian)(dian)流(liu)(liu)Ig=0,晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)仍能(neng)保持(chi)原来的(de)(de)(de)阳(yang)极(ji)(ji)电(dian)(dian)(dian)(dian)流(liu)(liu)Ia而(er)(er)继续导(dao)通(tong)(tong)。晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)在导(dao)通(tong)(tong)后，门(men)(men)极(ji)(ji)已(yi)失(shi)去作用。在晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)导(dao)通(tong)(tong)后，如(ru)果不断(duan)的(de)(de)(de)减小(xiao)电(dian)(dian)(dian)(dian)源(yuan)电(dian)(dian)(dian)(dian)压或增大回路(lu)(lu)电(dian)(dian)(dian)(dian)阻(zu)，使阳(yang)极(ji)(ji)电(dian)(dian)(dian)(dian)流(liu)(liu)Ia减小(xiao)到维(wei)持(chi)电(dian)(dian)(dian)(dian)流(liu)(liu)IH以下(xia)时(shi)，由(you)于a1和(he)a1迅(xun)速(su)下(xia)降，当(dang)(dang)(dang)1-（a1+a2）≈0时(shi)，晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)恢复阻(zu)断(duan)状态(tai)。可(ke)关断(duan)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)GTO（GateTurn-OffThyristor）亦(yi)称(cheng)门(men)(men)控晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)。其(qi)主要特点为，当(dang)(dang)(dang)门(men)(men)极(ji)(ji)加(jia)负向(xiang)(xiang)触发(fa)信(xin)号时(shi)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)能(neng)自行(xing)关断(duan)。前已(yi)述(shu)(shu)及(ji)，普(pu)通(tong)(tong)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)（SCR）靠门(men)(men)极(ji)(ji)正(zheng)信(xin)号触发(fa)之后，撤掉信(xin)号亦(yi)能(neng)维(wei)持(chi)通(tong)(tong)态(tai)。欲(yu)使之关断(duan)，必(bi)须(xu)切断(duan)电(dian)(dian)(dian)(dian)源(yuan)，使正(zheng)向(xiang)(xiang)电(dian)(dian)(dian)(dian)流(liu)(liu)低(di)于维(wei)持(chi)电(dian)(dian)(dian)(dian)流(liu)(liu)IH，或施以反向(xiang)(xiang)电(dian)(dian)(dian)(dian)压强近(jin)关断(duan)。这(zhei)就需要增加(jia)换向(xiang)(xiang)电(dian)(dian)(dian)(dian)路(lu)(lu)。不仅使设备的(de)(de)(de)体(ti)积重量增大，而(er)(er)且会降低(di)效(xiao)率，产生波形失(shi)真和(he)噪声。可(ke)关断(duan)晶(jing)(jing)(jing)闸(zha)(zha)(zha)(zha)管(guan)(guan)(guan)(guan)(guan)(guan)克服了上述(shu)(shu)缺(que)点。

漏电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)：指(zhi)加(jia)一半(ban)(ban)标称直流(liu)(liu)(liu)(liu)电(dian)(dian)(dian)(dian)压(ya)时测得的(de)流(liu)(liu)(liu)(liu)过压(ya)敏电(dian)(dian)(dian)(dian)阻的(de)电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)。由(you)于(yu)压(ya)敏电(dian)(dian)(dian)(dian)阻的(de)通流(liu)(liu)(liu)(liu)容量(liang)大(da)(da)，残压(ya)低，过电(dian)(dian)(dian)(dian)压(ya)能(neng)力强(qiang)；平时漏电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)小，放电(dian)(dian)(dian)(dian)后不会有续流(liu)(liu)(liu)(liu)，元件(jian)的(de)标称电(dian)(dian)(dian)(dian)压(ya)等级多，便于(yu)用(yong)(yong)户(hu)选择；伏安特(te)性(xing)是对称的(de)，可(ke)用(yong)(yong)于(yu)交、直流(liu)(liu)(liu)(liu)或正负浪涌；因此(ci)用(yong)(yong)途较广。2、过电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)保(bao)(bao)护(hu)由(you)于(yu)半(ban)(ban)导(dao)(dao)体器(qi)件(jian)体积(ji)小、热(re)(re)容量(liang)小，特(te)别(bie)像晶(jing)闸管(guan)(guan)这(zhei)类高电(dian)(dian)(dian)(dian)压(ya)大(da)(da)电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)功(gong)率器(qi)件(jian)，结(jie)温必须受(shou)到严格的(de)控制(zhi)，否则(ze)将遭(zao)至彻底损坏。当晶(jing)闸管(guan)(guan)中流(liu)(liu)(liu)(liu)过大(da)(da)于(yu)额定值的(de)电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)时，热(re)(re)量(liang)来(lai)不及(ji)散发，使得结(jie)温迅(xun)速升高，最终将导(dao)(dao)致(zhi)结(jie)层(ceng)被烧坏。产生(sheng)过电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)原因是多种多样的(de)，例如，变流(liu)(liu)(liu)(liu)装置本身(shen)晶(jing)闸管(guan)(guan)损坏，触发电(dian)(dian)(dian)(dian)路发生(sheng)故障(zhang)，控制(zhi)系统发生(sheng)故障(zhang)等，以及(ji)交流(liu)(liu)(liu)(liu)电(dian)(dian)(dian)(dian)源电(dian)(dian)(dian)(dian)压(ya)过高、过低或缺相(xiang)，负载过载或短路，相(xiang)邻(lin)设备(bei)故障(zhang)影响等。晶(jing)闸管(guan)(guan)过电(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)保(bao)(bao)护(hu)方法最常用(yong)(yong)的(de)是快速熔(rong)断器(qi)。由(you)于(yu)普(pu)通熔(rong)断器(qi)的(de)熔(rong)断特(te)性(xing)动(dong)作太慢，在熔(rong)断器(qi)尚未熔(rong)断之前晶(jing)闸管(guan)(guan)已(yi)被烧坏；所以不能(neng)用(yong)(yong)来(lai)保(bao)(bao)护(hu)晶(jing)闸管(guan)(guan)。正高电(dian)(dian)(dian)(dian)气秉承团结(jie)、奋进(jin)、创新、务实(shi)的(de)精神(shen)，诚实(shi)守(shou)信，厚(hou)德载物。

晶闸(zha)管(guan)模(mo)块电流规格的选取

1、根据负载性质(zhi)及负载额定电流进行选取

（1）电(dian)阻负载的较(jiao)大电(dian)流(liu)应是负载额(e)定电(dian)流(liu)的2倍。

（2）感性负载的较(jiao)大电(dian)流应为额定负载电(dian)流的3倍。

（3）负载电(dian)流变化较大时，电(dian)流倍数(shu)适当增大。

（4）在运行过程中，负载的实际(ji)工作电流不应超过模块的较(jiao)大电流。

2、散热器风机(ji)的选(xuan)用

模块正常(chang)工作(zuo)时必须(xu)配备散热(re)器和风机(ji)，推(tui)荐采用(yong)厂家配套的散热(re)器和风机(ji)。如果用(yong)户是自己提(ti)供的，则(ze)使(shi)用(yong)以下原则(ze)来(lai)选(xuan)择：

（1）模块正(zheng)常工作时，必须能保证冷却(que)底板温度不超过(guo)75℃；

（2）当模块(kuai)负载(zai)较轻时，可(ke)减小散(san)热(re)器的(de)尺寸或(huo)采用自(zi)然冷却；

（3） 有(you)水冷条件(jian)的，应优先(xian)水冷散热 。

3、使用要求

（1）工(gong)作场所环境温度范围：-25℃～+45℃；

（2）模块周围需要干燥、通风、远离热源、无尘、无腐(fu)蚀性液体或气体。

（3）模块电极上的铜(tong)线严禁不用端子直(zhi)接压接，以免接触(chu)不良引(yin)起附(fu)加发热。

（4）应经常测量固体继(ji)电(dian)器(qi)导热(re)衬底侧或固态继(ji)电(dian)器(qi)附近散热(re)器(qi)的表面温度，测点温度应小(xiao)于80℃。正高电(dian)气(qi)与(yu)广(guang)大(da)客户携手并进，共创辉煌！大(da)连稳(wen)流(liu)稳(wen)压模块报(bao)价

正高电(dian)气(qi)讲诚信，重信誉，多(duo)面(mian)整合(he)市场推广。大连稳(wen)流稳(wen)压模块报价

晶闸管模块

晶闸管模块(kuai)因其体(ti)积小(xiao)、重量轻、结构紧凑、可靠性高、外部接线简单、互换(huan)性好(hao)、维护(hu)安装方便等(deng)优点，自诞生以来就(jiu)受到(dao)各大功(gong)率半导(dao)体(ti)制造商的青睐，并得(de)到(dao)了极大的发展。

晶闸管模块(kuai)一(yi)(yi)般对错正弦电(dian)流(liu)有疑问，存在(zai)(zai)导通角(jiao)，负(fu)载(zai)电(dian)流(liu)具有一(yi)(yi)定的波动(dong)和不(bu)稳定因素，晶闸管模块(kuai)芯片抗(kang)电(dian)流(liu)冲击能力差，因此在(zai)(zai)选择(ze)模块(kuai)的电(dian)流(liu)标准时一(yi)(yi)定要留(liu)出(chu)一(yi)(yi)定的余量。

模块(kuai)冷(leng)(leng)(leng)却状态的(de)好坏直接关系到产品的(de)使用寿(shou)命和短期过载能力。温度越低，模块(kuai)输出电流越大。因此，在运行中必须配备散热器和风(feng)扇。建(jian)议选择具有过热维(wei)护功能的(de)商品，有水冷(leng)(leng)(leng)条件的(de)优先采用水冷(leng)(leng)(leng)冷(leng)(leng)(leng)却。大连稳流稳压模块(kuai)报价

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