鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,
鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,
产品价格:(人民币)
  • 规格:完善
  • 发货地:中山市
  • 品牌:
  • 最小起订量:1
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    会员级别:钻石会员
    认证类型:企业认证
    企业证件:通过认证

    商铺名称:中山朗立电气有限公司

    联系人:游小姐(小姐)

    联系手机:

    固定电话:

    企业邮箱:lixun98@126.com

    联系地址:中山市港口镇兴港南路17号153卡

    邮编:528400

    联系我时,请说是在线缆网上看到的,谢谢!

    商品详情

      鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,中山立讯电气有限公司直销韩国samwhadsp继电器。价格优惠。欢迎询价!
      WKS-3212H04 3C 220V 12Amp. 4~32VDC  
      WKS-3225H04 3C 220V 25Amp.4~32VDC
      WKS-3240H04 3C 220V 40Amp 4~32VDC
      WKS-3250H04 3C 220V 50Amp 4~32VDC 
      WKS-3255H04 3C 220V 55Amp 4~32VDC
      WKS-3270H04 3C 220V 70Amp 4~32VDC
      WKS-3212HAC 3C 220V 12Amp 4~32VDC
      WKS-3225HAC 3C 220V 25Amp 4~32VDC
      WKS-3240HAC 3C 220V 40Amp 4~32VDC
      WKS-3250HAC 3C 220V 50Amp 4~32VDC
      WKS-3325H04 3C 440V 25Amp 4~32VDC
      WKS-3340H04 3C 440V 40Amp 4~32VDC
      WKS-3350H04 3C 440V 50Amp 4~32VDC
      WKS-3355H04 3C 440V 55Amp 4~32VDC
      WKS-3370H04 3C 440V 70Amp 4~32VDC
      WKS-3325HAC 3C 440V 25Amp 85~240VAC
      WKS-3340HAC 3C 440V 40Amp 85~240VAC
      WKS-3350HAC 3C 440V 50Amp 85~240VAC
      WKS-1212H04 2C 220V 12Amp 4~32VDC
      WKS-1225H04 2C 220V 25Amp 4~32VDC
      WKS-1240H04 2C 220V 40Amp 4~32VDC
      WKS-1250H04 2C 220V 50Amp 4~32VDC

      但环境条件要求较高;2)封闭型IP20型适用一般用途,可有少量粉尘或少许温度、湿度的场合;3)密封型IP45型适用工业现场条件较差的环境;4)密闭型IP65型适用环境条件差,有水、尘及一定腐蚀性气体的场合。变频器容量的确定合理的容量选择本身就是一种节能降耗措施。根据现有资料和经验,比较简便的方法有三种:1)电机实际功率确定发。首先测定电机的实际功率,以此来选用变频器的容量。2)公式法。当一台变频器用于多台电机时,应满足:至少要考虑一台电动机启动电流的影响,以避免变频器过流跳闸。3)电机额定电流法变频器。变频器容量选定过程,实际上是一个变频器与电机的匹配过程,常见、也较的是使变频器的容量大于或等于电机的额定功率。主要目标在保护暴露於不同等级之危险性的机械操作人员。中文名继电器外文名Safetyrelay组合数个继电器与电路组合而成目的要能互补彼此的异常缺陷主要目标保护暴露於不同等级之危险性目录1基本信息?定义?要求?用途2原理?电磁式?热敏干簧?固态式3使用方法基本信息编辑定义所谓“继电器”并不是“没有故障的继电器”,而是发生故障时做出有规则的动作,它具有强制导向接点结构,万一发生接点熔结现象时也能确保,这一点同一般继电器完全不同。继电器是一个回路中所必须的控制部分,它接受输入,通过内部回路的判断,确定性的输出开关信号到设备的控制回路里。简单地说,继电器都是双通道信号型,只有两个通道信号都正常时,继电器才能正常工作;鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,

      WKS-1255H04 2C 220V 55Amp 4~32VDC
      WKS-1270H04 2C 220V 70Amp 4~32VDC
      WKS-1212HAC 2C 220V 12Amp 85~240VAC
      WKS-1225HAC 2C 220V 25Amp 85~240VAC.
      WKS-1240HAC 2C 220V 40Amp 85~240VAC
      WKS-1250HAC 2C 220V 50Amp 85~240VAC
      WKS-1255HAC 2C 220V 55Amp 85~240VAC
      WKS-1270HAC 2C 220V 70Amp 85~240VAC
      WKS-1325H04 2C 440V 25Amp 4~32VDC
      WKS-1340H04 2C 440V 40Amp 4~32VDC 
      WKS-1350H04 2C 440V 50Amp 4~32VDC
      WKS-1355H04 2C 440V 55Amp 4~32VDC
      WKS-1370H04 2C 440V 70Amp 4~32VDC 
      WKS-1325HAC 2C 440V 25Amp 85~240VAC
      WKS-1340HAC 2C 440V 40Amp 85~240VAC
      WKS-1350HAC 2C 440V 50Amp 85~240VACR 
      WKS-1355HAC 2C 440V 55Amp 85~240VAC
      WKS-1370HAC 2C 440V 70Amp 85~240VAC
      WKS-1212M04 2C 220VAC 4-32VDC
      WKS-1225M04 2C 220VAC 4-32VDC
      WKS-1240M04 2C 220VAC 4-32VDC
      WKS-1250M04 2C 220VAC 4-32VDC 
      WKS-1212MAC 85-240VAC
      WKS-1225MAC 85-240VAC
      WKS-1240MAC 85-240VAC
      WKS-1250MAC 85-240VAC
      WKS-1325M04 2C 380&440VAC 4-32VDC
      WKS-1340M04 2C 380&440VAC 4-32VDC
      WKS-1350M04 2C 380&440VAC 4-32VDC
      WKS-1325MAC 85-240VAC
      WKS-1340MAC 85-240VAC
      WKS-1350MAC 85-240VAC
      WKS-3212M04 3C 220VAC 4-32VDC
      WKS-3225M04 3C 220VAC 4-32VDC
      WKS-3240M04 3C 220VAC 4-32VDC
      WKS-3212MAC 85-240VAC
      WKS-3225MAC 85-240VAC
      WKS-3240MAC 85-240VAC
      WKS-3325M04 3C 380 &440VAC 4-32VDC
      WKS-3340M04 3C 380 &440VAC 4-32VDC
      WKS-3325MAC 85-240VAC
      WKS-3340MAC 85-240VAC
      WKS-3212FRMP 3C 220VAC 12-24VDC
      WKS-3225FRMP 3C 220VAC 12-24VDC
      WKS-3240FRMP 3C 220VAC 12-24VDC
      WKS-3212FRMN 12-24VDC
      WKS-3225FRMN 12-24VDC
      WKS-3240FRMN 12-24VDC
      WKS-3325FRMP 3C 380 &440VAC 12-24VDC
      WKS-3340FRMP 3C 380 &440VAC 12-24VDC
      WKS-3325FRMN 12-24VDC
      WKS-3340FRMN 12-24VDC
      WKS-1212FRMP 2C 220VAC 12-24VDC
      WKS-1225FRMP 2C 220VAC 12-24VD
      WKS-1240FRMP 2C 220VAC 12-24VD
      WKS-1212FRMN 12-24VDC
      WKS-1225FRMN 12-24VDC
      WKS-1240FRMN 12-24VDC
      WKS-1203PBZN 1CH 220VAC 3Amp.LED 4~24VDC
      WKS-1203PBZ 1CH 220VAC 3Amp
      WKS-1202PB2Z 2CH 220VAC 2Amp
      WKS-1210SQ 1C 220VAC.12A 4~32VDC
      WKS-1212SQ 1C 220VAC.12A 4~32VDC
      WKS-1220SQ 1C 220VAC.20A
      WKS-1225SQ 1C 220VAC.25A
      WKS-1240SQ 1C 220VAC.40A
      WKS-1255SQ 1C 220VAC.55A
      WKS-1270SQ 1C 220VAC.70A
      WKS-1210SQAC 1C 220VAC.12A 85 ~240VAC
      WKS-1212SQAC 1C 220VAC.12A 85 ~240VAC
      WKS-1220SQAC 1C 220VAC.20A
      WKS-1225SQAC 1C 220VAC.25A
      WKS-1240SQAC 1C 220VAC.40A
      WKS-1255SQAC 1C 220VAC.55A 
      WKS-1270SQAC 1C 220VAC.70A 
      WKS-1320SQ 1C 440VAC.25A 4~32VDC
      WKS-1325SQ 
      WKS-1340SQ 1C 440VAC.40A
      WKS-1355SQ 1C 440VAC.55A
      WKS-1370SQ 1C 440VAC.70A
      WKS-1320SQAC 1C 440VAC.25A 85 ~240VAC
      WKS-1325SQAC 
      WKS-1340SQAC 1C 440VAC.40A
      WKS-1355SQAC 1C 440VAC.55A
      WKS-1370SQAC 1C 440VAC.70ACR 
      WKS-0007PBZ 60VDC. 7A 4~24V
      WKS-0203PBZ 200VDC. 3A 
      WKS-0007PBZL 60VDC. 7A(LED) 
      WKS-0203PBZL 200VDC. 3A(LED) 
      WKS-0030SQ 60VDC.30A 4~32vHS-10A 
      WKS-0050SQ 60VDC.50A HS-20A 
      WKS-0080SQ 60VDC.80A HS-40A 
      WKS-0140SQ 100VDC.40A HS-40A 
      WKS-0210SQ 200VDC.10A HS-10A 
      WKS-0220SQ 200VDC.20A HS-20A 
      WKS-0330SQ 300VDC.30A  HS-20A 
      WKS-0530SQ 500VDC.30A HS-40A 
      WKS-0220MAB 200VDC 20A (2-SPDT, 1a1b) 12-24VDC
      WKS-1220C2M04/AC 220VAC AC,DC
      WKS-0030FRMP 60VDC 30A
      WKS-0050FRMP 60VDC 50A DC60V
      WKS-0225FRMP 200VDC 25A DC200V
      WKS-0030FRMN 60VDC 30A DC60V
      WKS-0050FRMN 60VDC 50A DC60V
      WKS-0225FRMN 200VDC 25A DC200V

      对于热电偶及热电阻信号显示范围就是其测量范围。8.输入信号种类及测量范围:各种热电偶、热电阻、标准电压及电流信号,由键盘设定选择。信号种类量程代码测量范围电流mA010~10mAmA024~20mAmA开方034~20mA开方电压mV110~20mVmV120~50mVmV130~100mVV140~5VV151~5VV开方161~5V开方热电阻Pt10021-50.0~550.0°CCu10022-50.0~150.0°CCu5023-50.0~150.0°C远传压力电阻240~400Ω热电偶T310.0~400.0°CE320~1000°CK330~1300°CS340~1750°CB35500~1800°C关闭通道00该通道关闭9.走纸速度:通过键盘任意设定。故在电路中起着自动调节、保护、转换电路等作用。主要用于发电机、变压器和输电线的继电保护装置中,作为过电压保护或低电压闭锁的启动原件。[1]中文名电压继电器外文名Voltagerelay类别电气设备学科电工学作用自动调节、保护、转换电路分类过电压继电器、欠电压继电器目录1介绍2分类3电磁式电压继电器4静态电压继电器介绍编辑电压继电器是输入量、特性量为电压的量度继电器,分为过电压继电器和欠电压继电器。前者由于电压值增加达到整定值而动作,然后处于动后状态;后者由于电压值减少达到整定值而动作,然后处于释放状态。电压继电器有电磁型、晶体管型。电磁型电压继电器原理及结构如图1所示,当电压达到整定值时,铁芯将舌片吸合。鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,

      WKS-0030SQH HS-10A
      WKS-0050SQH HS-20A
      WKS-0080SQH HS-40A
      WKS-0140SQH HS-40A
      WKS-0210SQH HS-10A
      WKS-0220SQH HS-20A
      WKS-0330SQH HS-20A
      WKS-0530SQH HS-40A
      WKS-1210SQH HS-10A
      WKS-1212SQH HS-10A
      WKS-1220SQH HS-20A
      WKS-1225SQH HS-20A
      WKS-1240SQH HS-40A
      WKS-1255SQH HS-300A  
      WKS-1270SQH HS-300A
      WKS-1270SQF HS-300A/F
      WKS-1210SQHAC HS-10A
      WKS-1212SQHAC HS-10A
      WKS-1220SQHAC HS-20A
      WKS-1225SQHAC HS-20A
      WKS-1240SQHAC HS-40A
      WKS-1255SQHAC HS-300A
      WKS-1270SQHAC HS-300A
      WKS-1270SQFAC HS-300A/F
      WKS-1320SQH HS-20A
      WKS-1325SQH HS-20A
      WKS-1340SQH HS-40A
      WKS-1355SQH HS-300A
      WKS-1370SQH HS-300A  
      WKS-1370SQF HS-300A/F 
      WKS-1320SQHAC HS-20A
      WKS-1325SQHAC HS-20A
      WKS-1340SQHAC HS-40A
      WKS-1355SQHAC HS-300A
      WKS-1370SQHAC HS-300A
      WKS-1370SQFAC HS-300A/F
      WKS-1390SQH 1P 220/380/440VAC 90A 4~32VDC
      WKS-13110SQH 1P 220/380/440VAC 110 4~32VDC
      WKS-13130SQF 1P 220/380/440VAC 130 4~32VDC   
      WKS-3390HF04 Tb 3P 220/380/440VAC 90A 4~32VDC
      WKS-33110HF04 Tb 3P 220/380/440VAC 110 4~32VDC
      WKS-33130HF04 Tb 3P 220/380/440VAC 130 4~32VDC 
      WKS-3(2)90~110A 120*268*166 ??(W)??(L)??(H) 
      WKS-3(2)130A 120*288*166 ??(W)??(L)??(H))  
      WKS-3212HH04 HS-300A
      WKS-3212HF04 HS-300A/F
      WKS-3225HH04 HS-320A
      WKS-3225HF04Tb HS-320A/FT
      WKS-3240HH04 HS-330A
      WKS-3240HF04Tb HS-320A/FT
      WKS-3250HH04 HS-350A
      WK-3250HF04Tb HS-330A/FT
      WKS-3255HF04Tb HS-330A/FT
      WKS-3270HF04Tb HS-350A/FT
      WKS-3212HHAC HS-300A
      WKS-3212HFAC HS-300A/F
      WKS-3225HHAC HS-320A
      WKS-3225HFACTb HS-320A/FT
      WKS-3240HHAC HS-330A
      WKS-3240HFACTb HS-320A/FT
      WKS-3250HHAC HS-350A
      WKS-3250HFACTb HS-330A/FT
      WKS-3325HH04 HS-320A
      WKS-3325HF04Tb HS-320A/FT
      WKS-3340HH04 HS-330A
      WKS-3340HF04Tb HS-320A/FT
      WKS-3350HH04 HS-350A
      WKS-3350HF04Tb HS-330A/FT
      WKS-3355HF04Tb HS-330A/FT
      WKS-3370HF04Tb HS-350A/FT
      WKS-3325HHAC HS-320A

      双管反激式(DoubleTransistorFlybackConverter)、推挽式(Push-PullConverter)和半桥式(Half-BridgeConverter)四种。四管DC/DC转换器就是全桥DC/DC转换器(Full-BridgeConverter)。非隔离式DC/DC转换器,按有源功率器件的个数,可以分为单管、双管和四管三类。开关电源内部结构图开关电源内部结构图单管DC/DC转换器共有六种,即降压式(Buck)DC/DC转换器,升压式(Boost)DC/DC转换器、升压降压式(BuckBoost)DC/DC转换器、CukDC/DC转换器、ZetaDC/DC转换器和SEPICDC/DC转换器。(2)V/V接线是将两台全绝缘单相电压互感器的高低压绕组分别接于相与相之间构成不完全三角形。这种方法常用于中性点不接地或经消弧线圈接地的35kV及以下的高压三相系统中,特别是10kV的三相系统中。(3)用三台单相三绕组电压互感器构成YN,yn,d0或YN,d0的接线形式,广泛应用于3~220KV系统中,其二次绕组用于测量相间电压和相对地电压,辅助二次绕组接成开口三角形,供接入交流电网绝缘监视仪表和继电器用。用一台三相五柱式电压互感器代替上述三个单相三绕组电压互感器构成的接线,除铁芯外,其形式与图3基本相同,一般只用于3~15KV系统。(4)三相三绕组五柱式电压互感器,其一次绕组和主二次绕组接成星形。鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,

      WKS-3325HFACTb HS-320A/FT
      WKS-3340HHAC HS-330A
      WKS-3340HFACTb HS-320A/FT
      WKS-3350HHAC HS-350A
      WKS-3350HFACTb HS-330A/FT
      WKS-1212HH04 HS-300A
      WKS-1225HH04 HS-300A
      WKS-1240HH04 HS-320A
      WKS-1250HH04 HS-330A
      WKS-1255HH04 HS-330A
      WKS-1270HH04 HS-350A
      WKS-1270HF04Tb HS-330A/FT
      WKS-1212HHAC HS-300A
      WKS-1240HHAC HS-320A
      WKS-1250HHAC HS-330A
      WKS-1255HHAC HS-330A
      WKS-1270HHAC HS-350A
      WKS-1340HHAC
      WKS-1350HHAC
      WKS-1370HHAC
      WKS-3212HHAC
      WKS-3225HHAC
      WKS-3240HHAC
      WKS-3250HHAC
      WKS-3325HHAC
      WKS-3340HHAC
      WKS-3350HHAC
      WKS-1270HFACTb HS-330A/FT
      WKS-1325HH04 HS-300A
      WKS-1340HH04 HS-320A
      WKS-1350HH04 HS-330A
      WKS-1355HH04 HS-330A
      WKS-1370HH04 HS-350A
      WKS-1370HF04Tb HS-330A/FT
      WKS-1325HHAC HS-300A
      WKS-1340HHAC HS-320A
      WKS-1350HHAC HS-330A
      WKS-1355HHAC HS-330A
      WKS-1370HHAC HS-350A
      WKS-1370HFACTb HS-330A/FT
      (T.P.R)    
      WKS-1212SQTM 220VAC 12Amp 0-500KΩ
      WKs-1225SQTM 220VAC 25Amp 0-500KΩ
      WKS-1240SQTM 220VAC 40Amp 0-500KΩ
      WKs-1325SQTM 20VAC 25Amp 0-500KΩ
      WKS-1340SQTM 220VAC 40Amp 0-500KΩ
      (T.P.R ) 
      WKS-1212SQTMH HS-10A 0-500KΩ
      WKS-1225SQTMH HS-20A 0-500KΩ
      WKS-1240SQTMH HS-40A 0-500KΩ
      WKS-1325SQTMH HS-20A 0-500KΩ
      WKS-1340SQTMH HS-40A 0-500KΩ

      电源
      WK-15AF 15 1 90 ~260 VAC
      WK-15AB
      WK-15BX 
      WK-15CX 
      WK15-3B
      WK15-3C
      WK-30AF 
      WK-30AB
      WKS-30BX 
      WKS-30CX 
      WKS-303BX
      WKS-30-3X 
      WK-50AF 50 1 90 ~ 130/180 ~ 260VAC
      WK-50AB 2
      WK-50BD 
      WK50-3X 96*153*43(W*L*H) 
      WK-75AF
      WK-75AB
      WK-75BD 
      WK-60BX 
      WK-60CX 
      WK-100AF
      WKS-90AB
      WKS-100CX 
      WKS-100AM
      WK-100DM 
      WK-150AF
      WK-150CX
      WK-130MR 

      送入运算回路,根据指令和运算可使电动机按指令速度运转。(5)保护电路:检测主电路的电压、电流等,当发生过载或过电压等异常时,为了防止逆变器和异步电动机损坏。功能作用变频节能变频器节能主要表现在风机、水泵的应用上。风机、泵类负载采用变频调速后,节电率为20%~60%,这是因为风机、泵类负载的实际消耗功率基本与转速的三次方成比例。当用户需要的平均流量较小时,风机、泵类采用变频调速使其转速降低,节能效果非常明显。而传统的风机、泵类采用挡板和阀门进行流量调节,电动机转速基本不变,耗电功率变化不大。据统计,风机、泵类电动机用电量占全国用电量的31%,占工业用电量的50%。在此类负载上使用变频调速装置具有非常重要的意义。当线圈通以交流电流时,在感应元件的电磁铁中,由于短路环的移相作用,产生两个相位不同的磁通,此磁通与其在铝盘中感应的涡流相互作用,产生电磁力知使铝盘旋转,当电流增大到整定电流时,电磁力矩大于弹簧的反作用力矩,铝支架转动,扇齿与蜗杆咬合,并随着蜗杆旋转而上升,其顶杆推动电磁元件的动铁,当动铁与电磁铁之间的气隙减小到一定程度时,动铁被吸合,动铁尾部的顶板推动接点闭合,并推下信号牌,显示继电器过电流状态。设备介绍编辑原理电磁式过流继电器的工作原理是复合式的,由公用一个线圈的感应式和电磁式的两个元件组成。当继电器的线圈通以交流电流时,则在铁芯的遮蔽与未遮蔽部分产生两个具有一定相位差的磁通。此磁通与其在圆盘中感应的涡流相互作用。鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,

      WKS-140MR 
      WKS-102CT  106*199*50(W*L*H) 
      WKS-128M 
      WKS-150MR
      WK-903M 
      WK-903MX 
      WK-200AF
      WK-200CX
      WK-160MR 
      WK-200MR 
      WK-250A~F 100*200*90 
      WK-300A~F
      WK-400A~F
      WKS-500A~F
      WKS-600A~F
      WKS-750A~F
      WKS-1000A~F
      WKS-1200A~F
      WKS-1500A~F
      WKS-1210SQ
      WKS-1220SQ, WKS-1225SQ
      WKS-1320SQ, WKS-1325SQ 
      WKS-1240SQ, WKS-1340SQ
      WKS-1255SQ, WKS-1270SQ
      WKS-1355SQ, WKS-1370SQ 
      WKS-3212H, WKS-1212H 
      WK-1225H, WKS-1325H 
      HS-300A/F DC24V60*60mm WKS-1270SQ, WKS-1370SQ
      WKS-3212H  HS-320A  WKS-3225H , WKS-3325H 
      WKS-1240H,
      WKS-1340H HS-320A/FT Bolt DC24V,AC22080*80mm
      WKS-3225H , WKS-3240H 
      WKS-3325H , WKS-3240H 
      WKS-1250H , WKS-1350H 
      WKS-3240H , WKS-3340H 
      WKS-1250H , WKS-1255H 
      WKS-1350H , WKS-1355H 
      HS-330A/FT DC24V,AC22080*80mm
      WK-3250H , WK-3255H04
      WKS-3350H , WKS-3355H04 
      WKS-1270H , WKS-1370H 
      WK-3250H , WKS-3350H
      WKS-1270H , WKS-1370H 
      WK-3270H04, WK-3370H04
      WKS-BKT
      DSP-VPFR22/44/69
      DSP-VIP-PL
      DSP-VIP-PM
      DSP-VIP-CM
      DSP-VIP-CL
      DSP-VIP-RTM
      DSP-VIP-5EM/5TM/5CM
      DSP-VIP-5EL/5TL/5CL
      DSP-COM,CCM(485),CTM(4-20mA)
      DSP-COL,CCL(485),CTL(4-20mA)
      DSP06-3ESSG
      DSP06-3ESS(30,60,120)
      DSP-10SP, 20SP, 30SP
      DSP-SP 01
      DSP-30ES
      DSP-06ES, (06, 10, 30, 50)
      DSP-06ES2, 30-ES2, 60-ES2, 120-ES2
      DSP06-SS (30, 60, 120)
      DSP-SS 120
      DSP-326L DSP-346L DSP-336L DSP-143R DSP-146L DSP-136L DSP-126L DSP-123R DSP-133R
      DSP-DGFR DSP-VIP-4EL05Z7-DC DSP-SDTR DSP-UVR110 DSP-UVR220 DSP-UVR380 DSP-OVR380
      DSP-OVR220 DSP06-UCR, (30, 60) DSP-WL252R-S DSP-GR 600
      DSP-E2CV DSP-NGR44 DSP-NGR22 DSP-APS-BMH DSP-APS-BRH

      晶闸管就不能导通。控制极的作用是通过外加正向触发脉冲使晶闸管导通,却不能使它关断。那么,用什么方法才能使导通的晶闸管关断呢?使导通的晶闸管关断,可以断开阳极电源(图3中的开关S)或使阳极电流小于维持导通的值(称为维持电流)。如果晶闸管阳极和阴极之间外加的是交流电压或脉动直流电压,那么,在电压过零时,晶闸管会自行关断。应用类型图4示出了双向可控硅的特性曲线。由图可见,双向可控硅的特性曲线是由三两个象限内的曲线组合成的。象限的曲线说明当加到主电极上的电压使Tc对T1的极性为正时,我们称为正向电压,并用符号U21表示。当这个电压逐渐增加到等于转折电压UBO时,图3(b)左边的可控硅就触发导通,这时的通态电流为I21。如果出现的话,很可能是1PM模块出现故障,因为1PM模块内含有过压过流、欠压、过载、过热、缺相、短路等保护功能,而这些故障信号都是经模块控制引脚的输出Fn引脚传送到微控器的,微控器接收到故障信息后,一方面脉冲输出,另一方面将故障信息显示在面板上,一般更换1PM模块。4)变频器显示过压故障变频器出现过压故障,一般是雷雨天气,由于雷电串入变频器的电源中,使变频器直流侧的电压检测器动作而跳闸,在这种情况下,通常只须断开变频器电源1min左右,再合上电源,即可复位;另一种情况是变频器驱动大惯性负载,就出现过压现象,因为这种情况下,变频器的减速停止属于再生制动,在停止过程中,变频器的输出频率按线性下降。鸡西市SANIL开关SC-18MP-LS,SC-18MBP-LS,

       

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