盐城市批发shinhwa继电器SAS-4340A,韩国Sinwoo S-CON变送器。中山立讯电气有限公司,中山朗立电气有限公司DST-D-3X DST-D-3Y DST-D-4X DST-D-4Y DST-D-5X DST-D-5Y
DST-I-3X DST-I-3Y DST-I-4X DST-I-4Y DST-I-5X DST-I-5Y
DST-R-3X DST-R-3Y DST-R-4X DST-R-4Y DST-T-4X DST-T-4Y
DST-R-5X DST-R-5Y DST-T-3X DST-T-3Y DST-T-4X DST-T-4Y
DST-T-5X DST-T-5Y DST-P-3X DST-P-3Y DST-P-4X DST-P-4Y
DST-P-5X DST-P-5Y DST-O-3X DST-O-3Y DST-O-4X DST-O-4Y
DST-O-5X DST-O-5Y DSTM-D-VX DSTM-D-VY DSTM-D-IX DSTM-D-IY
DSTM-D-OX DSTM-D-OY DSTM-I-VX DSTM-I-VY DSTM-I-IX DSTM-I-IY
DSTM-I-OX DSTM-I-OY DSTM-A-VX DSTM-A-VY DSTM-A-IX DSTM-A-IY
DSTM-A-OX DSTM-A-OY DSTM-R-VX DSTM-R-VY DSTM-R-IX DSTM-R-IY
DSTM-R-OX DSTM-R-OY DSTM-P-VX DSTM-P-VY DSTM-P-IX DSTM-P-IY
DSTM-P-OX DSTM-P-OY DSTM-O-VX DSTM-O-VY DSTM-O-IX DSTM-O-IY
DSTM-O-OX DSTM-O-OY
FFC-4AA-W FFC-4AA-X FFC-4AA-Z FFC-4AA-Y
FFC-4AB-W FFC-4AB-X FFC-4AB-Z FFC-4AB-Y
FFC-4AC-W FFC-4AC-X FFC-4AC-Z FFC-4AC-Y
FFC-4AD-W FFC-4AD-X FFC-4AD-Z FFC-4AD-Y
FFC-4AR-W FFC-4AR-X FFC-4AR-Z FFC-4AR-Y
FFC-4AN-W FFC-4AN-X FFC-4AN-Z FFC-4AN-Y
FFC-4BA-W FFC-4BA-X FFC-4BA-Z FFC-4BA-Y
FFC-4BB-W FFC-4BB-X FFC-4BB-Z FFC-4BB-Y
FFC-4BC-W FFC-4BC-X FFC-4BC-Z FFC-4BC-Y
FFC-4BD-W FFC-4BD-X FFC-4BD-Z FFC-4BD-Y

俗称耐压。常用可控硅的VRRM/VDRM一般为几百伏到一千伏。⒊控制极触发电流（IGT），俗称触发电流。常用可控硅的IGT一般为几微安到几十毫安。在规定环境温度和散热条件下，允许通过阴极和阳极的电流平均值。封装形式编辑常用可控硅的封装形式有TO-TO-TO-202AB、TO-TO-220ABC、TO-3P、SOT-TO-TO-SOT-SOT23-3L等用途编辑普通晶闸管基本的用途就是可控整流。大家熟悉的二极管整流电路属于不可控整流电路。如果把二极管换成晶闸管，就可以构成可控整流电路。以简单的单相半波可控整流电路为例，在正弦交流电压U2的正半周期间。
盐城市批发shinhwa继电器SAS-4340A,

FFC-4BR-W FFC-4BR-X FFC-4BR-Z FFC-4BR-Y
FFC-4BN-W FFC-4BN-X FFC-4BN-Z FFC-4BN-Y
FFC-4CA-W FFC-4CA-X FFC-4CA-Z FFC-4CA-Y
FFC-4CB-W FFC-4CB-X FFC-4CB-Z FFC-4CB-Y
FFC-4CC-W FFC-4CC-X FFC-4CC-Z FFC-4CC-Y
FFC-4CD-W FFC-4CD-X FFC-4CD-Z FFC-4CD-Y
FFC-4CR-W FFC-4CR-X FFC-4CR-Z FFC-4CR-Y
FFC-4CN-W FFC-4CN-X FFC-4CN-Z FFC-4CN-Y
FFC-4DA-W FFC-4DA-X FFC-4DA-Z FFC-4DA-Y
FFC-4DB-W FFC-4DB-X FFC-4DB-Z FFC-4DB-Y
FFC-4DC-W FFC-4DC-X FFC-4DC-Z FFC-4DC-Y
FFC-4DD-W FFC-4DD-X FFC-4DD-Z FFC-4DD-Y
FFC-4DR-W FFC-4DR-X FFC-4DR-Z FFC-4DR-Y
FFC-4DN-W FFC-4DN-X FFC-4DN-Z FFC-4DN-Y
FFC-4RA-W FFC-4RA-X FFC-4RA-Z FFC-4RA-Y
FFC-4RB-W FFC-4RB-X FFC-4RB-Z FFC-4RB-Y
FFC-4RC-W FFC-4RC-X FFC-4RC-Z FFC-4RC-Y
FFC-4RD-W FFC-4RD-X FFC-4RD-Z FFC-4RD-Y
FFC-4RR-W FFC-4RR-X FFC-4RR-Z FFC-4RR-Y
FFC-4RN-W FFC-4RN-X FFC-4RN-Z FFC-4RN-Y
FFC-9AA-W FFC-9AA-X FFC-9AA-Z FFC-9AA-Y

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。
盐城市批发shinhwa继电器SAS-4340A,

FFC-9AB-W FFC-9AB-X FFC-9AB-Z FFC-9AB-Y
FFC-9AC-W FFC-9AC-X FFC-9AC-Z FFC-9AC-Y
FFC-9AD-W FFC-9AD-X FFC-9AD-Z FFC-9AD-Y
FFC-9AR-W FFC-9AR-X FFC-9AR-Z FFC-9AR-Y
FFC-9AN-W FFC-9AN-X FFC-9AN-Z FFC-9AN-Y
FFC-9BA-W FFC-9BA-X FFC-9BA-Z FFC-9BA-Y
FFC-9BB-W FFC-9BB-X FFC-9BB-Z FFC-9BB-Y
FFC-9BC-W FFC-9BC-X FFC-9BC-Z FFC-9BC-Y
FFC-9BD-W FFC-9BD-X FFC-9BD-Z FFC-9BD-Y
FFC-9BR-W FFC-9BR-X FFC-9BR-Z FFC-9BR-Y
FFC-9BN-W FFC-9BN-X FFC-9BN-Z FFC-9BN-Y
FFC-9CA-W FFC-9CA-X FFC-9CA-Z FFC-9CA-Y
FFC-9CB-W FFC-9CB-X FFC-9CB-Z FFC-9CB-Y
FFC-9CC-W FFC-9CC-X FFC-9CC-Z FFC-9CC-Y
FFC-9CD-W FFC-9CD-X FFC-9CD-Z FFC-9CD-Y
FFC-9CR-W FFC-9CR-X FFC-9CR-Z FFC-9CR-Y
FFC-9CN-W FFC-9CN-X FFC-9CN-Z FFC-9CN-Y
FFC-9DA-W FFC-9DA-X FFC-9DA-Z FFC-9DA-Y
FFC-9DB-W FFC-9DB-X FFC-9DB-Z FFC-9DB-Y
FFC-9DC-W FFC-9DC-X FFC-9DC-Z FFC-9DC-Y
FFC-9DD-W FFC-9DD-X FFC-9DD-Z FFC-9DD-Y
FFC-9DR-W FFC-9DR-X FFC-9DR-Z FFC-9DR-Y
FFC-9DN-W FFC-9DN-X FFC-9DN-Z FFC-9DN-Y
FFC-9RA-W FFC-9RA-X FFC-9RA-Z FFC-9RA-Y
FFC-9RB-W FFC-9RB-X FFC-9RB-Z FFC-9RB-Y
FFC-9RC-W FFC-9RC-X FFC-9RC-Z FFC-9RC-Y
FFC-9RD-W FFC-9RD-X FFC-9RD-Z FFC-9RD-Y
FFC-9RR-W FFC-9RR-X FFC-9RR-Z FFC-9RR-Y
FFC-9RN-W FFC-9RN-X FFC-9RN-Z FFC-9RN-Y
S-CON100 S-CON200 S-CON300
IPD-2A1-W IPD-2A1-X IPD-2A1-Y IPD-2A1-Z
IPD-2A2-W IPD-2A2-X IPD-2A2-Y IPD-2A2-Z
IPD-2A3-W IPD-2A3-X IPD-2A3-Y IPD-2A3-Z
IPD-2A4-W IPD-2A4-X IPD-2A4-Y IPD-2A4-Z
IPD-2A5-W IPD-2A5-X IPD-2A5-Y IPD-2A5-Z
IPD-2A6-W IPD-2A6-X IPD-2A6-Y IPD-2A6-Z
IPD-2A7-W IPD-2A7-X IPD-2A7-Y IPD-2A7-Z
IPD-2A8-W IPD-2A8-X IPD-2A8-Y IPD-2A8-Z
IPD-2AR-W IPD-2AR-X IPD-2AR-Y IPD-2AR-Z
IPD-2AN-W IPD-2AN-X IPD-2AN-Y IPD-2AN-Z
IPD-2R1-W IPD-2R1-X IPD-2R1-Y IPD-2R1-Z
IPD-2R2-W IPD-2R2-X IPD-2R2-Y IPD-2R2-Z
IPD-2R3-W IPD-2R3-X IPD-2R3-Y IPD-2R3-Z
IPD-2R4-W IPD-2R4-X IPD-2R4-Y IPD-2R4-Z
IPD-2R5-W IPD-2R5-X IPD-2R5-Y IPD-2R5-Z
IPD-2R6-W IPD-2R6-X IPD-2R6-Y IPD-2R6-Z
IPD-2R7-W IPD-2R7-X IPD-2R7-Y IPD-2R7-Z
IPD-2R8-W IPD-2R8-X IPD-2R8-Y IPD-2R8-Z
IPD-2RR-W IPD-2RR-X IPD-2RR-Y IPD-2RR-Z
IPD-2RN-W IPD-2RN-X IPD-2RN-Y IPD-2RN-Z
IPD-4A1-W IPD-4A1-X IPD-4A1-Y IPD-4A1-Z

工作电流为集电极电流I。至今，IGBT的击穿电压也已做到1200V，集电极饱和电流已超过1500A，由IGBT作为逆变器件的变频器容量已达到250KVA以上。此外，其工作频率可达20KHZ。由IGBT作为逆变器件的变频器的载波频率一般都在10KHZ以上，故电动机的电源波形比较平滑，基本无电磁噪声。在变频器工作时，流过变频器的电流是很大的,变频器产生的热量也是非常大的，不能忽视其发热所产生的影响通常，变频器安装在控制柜中。我们要了解一台变频器的发热量大概是多少.可以用以下公式估算:发热量的近似值=变频器容量（KW）×55[W]在这里,如果变频器容量是以恒转矩负载为准的(过流能力150%*60s)如果变频器带有直流电抗器或交流电抗器,并且也在柜子里面,这时发热量会更大一些。
盐城市批发shinhwa继电器SAS-4340A,

IPD-4A2-W IPD-4A2-X IPD-4A2-Y IPD-4A2-Z
IPD-4A3-W IPD-4A3-X IPD-4A3-Y IPD-4A3-Z
IPD-4A4-W IPD-4A4-X IPD-4A4-Y IPD-4A4-Z
IPD-4A5-W IPD-4A5-X IPD-4A5-Y IPD-4A5-Z
IPD-4A6-W IPD-4A6-X IPD-4A6-Y IPD-4A6-Z
IPD-4A7-W IPD-4A7-X IPD-4A7-Y IPD-4A7-Z
IPD-4A8-W IPD-4A8-X IPD-4A8-Y IPD-4A8-Z
IPD-4AR-W IPD-4AR-X IPD-4AR-Y IPD-4AR-Z
IPD-4AN-W IPD-4AN-X IPD-4AN-Y IPD-4AN-Z
IPD-4R1-W IPD-4R1-X IPD-4R1-Y IPD-4R1-Z
IPD-4R2-W IPD-4R2-X IPD-4R2-Y IPD-4R2-Z
IPD-4R3-W IPD-4R3-X IPD-4R3-Y IPD-4R3-Z
IPD-4R4-W IPD-4R4-X IPD-4R4-Y IPD-4R4-Z
IPD-4R5-W IPD-4R5-X IPD-4R5-Y IPD-4R5-Z
IPD-4R6-W IPD-4R6-X IPD-4R6-Y IPD-4R6-Z
IPD-4R7-W IPD-4R7-X IPD-4R7-Y IPD-4R7-Z
IPD-4R8-W IPD-4R8-X IPD-4R8-Y IPD-4R8-Z
IPD-4RR-W IPD-4RR-X IPD-4RR-Y IPD-4RR-Z
IPD-4RN-W IPD-4RN-X IPD-4RN-Y IPD-4RN-Z
IPD-7A1-W IPD-7A1-X IPD-7A1-Y IPD-7A1-Z
IPD-7A2-W IPD-7A2-X IPD-7A2-Y IPD-7A2-Z
IPD-7A3-W IPD-7A3-X IPD-7A3-Y IPD-7A3-Z
IPD-7A4-W IPD-7A4-X IPD-7A4-Y IPD-7A4-Z
IPD-7A5-W IPD-7A5-X IPD-7A5-Y IPD-7A5-Z
IPD-7A6-W IPD-7A6-X IPD-7A6-Y IPD-7A6-Z
IPD-7A7-W IPD-7A7-X IPD-7A7-Y IPD-7A7-Z
IPD-7A8-W IPD-7A8-X IPD-7A8-Y IPD-7A8-Z
IPD-7AR-W IPD-7AR-X IPD-7AR-Y IPD-7AR-Z
IPD-7AN-W IPD-7AN-X IPD-7AN-Y IPD-7AN-Z
IPD-7R1-W IPD-7R1-X IPD-7R1-Y IPD-7R1-Z
IPD-7R2-W IPD-7R2-X IPD-7R2-Y IPD-7R2-Z
IPD-7R3-W IPD-7R3-X IPD-7R3-Y IPD-7R3-Z
IPD-7R4-W IPD-7R4-X IPD-7R4-Y IPD-7R4-Z
IPD-7R5-W IPD-7R5-X IPD-7R5-Y IPD-7R5-Z
IPD-7R6-W IPD-7R6-X IPD-7R6-Y IPD-7R6-Z
IPD-7R7-W IPD-7R7-X IPD-7R7-Y IPD-7R7-Z
IPD-7R8-W IPD-7R8-X IPD-7R8-Y IPD-7R8-Z
IPD-7RR-W IPD-7RR-X IPD-7RR-Y IPD-7RR-Z
IPD-7RN-W IPD-7RN-X IPD-7RN-Y IPD-7RN-Z
IPD-9A1-W IPD-9A1-X IPD-9A1-Y IPD-9A1-Z
IPD-9A2-W IPD-9A2-X IPD-9A2-Y IPD-9A2-Z
IPD-9A3-W IPD-9A3-X IPD-9A3-Y IPD-9A3-Z
IPD-9A4-W IPD-9A4-X IPD-9A4-Y IPD-9A4-Z
IPD-9A5-W IPD-9A5-X IPD-9A5-Y IPD-9A5-Z

等效成两相静止坐标系下的交流电流Ia1Ib1，再通过按转子磁场定向旋转变换，等效成同步旋转坐标系下的直流电流ImIt1(Im1相当于直流电动机的励磁电流；It1相当于与转矩成正比的电枢电流)，然后模仿直流电动机的控制方法，求得直流电动机的控制量，经过相应的坐标反变换，实现对异步电动机的控制。其实质是将交流电动机等效为直流电动机，分别对速度，磁场两个分量进行独立控制。通过控制转子磁链，然后分解定子电流而获得转矩和磁场两个分量，经坐标变换，实现正交或解耦控制。矢量控制方法的提出具有划时代的意义。然而在实际应用中，由于转子磁链难以准确观测，系统特性受电动机参数的影响较大，且在等效直流电动机控制过程中所用矢量旋转变换较复杂。
盐城市批发shinhwa继电器SAS-4340A,

IPD-9A6-W IPD-9A6-X IPD-9A6-Y IPD-9A6-Z
IPD-9A7-W IPD-9A7-X IPD-9A7-Y IPD-9A7-Z
IPD-9A8-W IPD-9A8-X IPD-9A8-Y IPD-9A8-Z
IPD-9AR-W IPD-9AR-X IPD-9AR-Y IPD-9AR-Z
IPD-9AN-W IPD-9AN-X IPD-9AN-Y IPD-9AN-Z
IPD-9R1-W IPD-9R1-X IPD-9R1-Y IPD-9R1-Z
IPD-9R2-W IPD-9R2-X IPD-9R2-Y IPD-9R2-Z
IPD-9R3-W IPD-9R3-X IPD-9R3-Y IPD-9R3-Z
IPD-9R4-W IPD-9R4-X IPD-9R4-Y IPD-9R4-Z
IPD-9R5-W IPD-9R5-X IPD-9R5-Y IPD-9R5-Z
IPD-9R6-W IPD-9R6-X IPD-9R6-Y IPD-9R6-Z
IPD-9R7-W IPD-9R7-X IPD-9R7-Y IPD-9R7-Z
IPD-9R8-W IPD-9R8-X IPD-9R8-Y IPD-9R8-Z
IPD-9RR-W IPD-9RR-X IPD-9RR-Y IPD-9RR-Z
IPD-9RN-W IPD-9RN-X IPD-9RN-Y IPD-9RN-Z
IR-V100-W IR-V100-X IR-V100-Y IR-V100-Z
IR-V135-W IR-V135-X IR-V135-Y IR-V135-Z
IR-V500-W IR-V500-X IR-V500-Y IR-V500-Z
IR-V1K-W IR-V1K-X IR-V1K-Y IR-V1K-Z
IR-V5K-W IR-V5K-X IR-V5K-Y IR-V5K-Z
IR-V10K-W IR-V10K-X IR-V10K-Y IR-V10K-Z
IR-V100K-W IR-V100K-X IR-V100K-Y IR-V100K-Z
IR-I100-W IR-I100-X IR-I100-Y IR-I100-Z
IR-I135-W IR-I135-X IR-I135-Y IR-I135-Z
IR-I500-W IR-I500-X IR-I500-Y IR-I500-Z
IR-I1K-W IR-I1K-X IR-I1K-Y IR-I1K-Z
IR-I5K-W IR-I5K-X IR-I5K-Y IR-I5K-Z
IR-I10K-W IR-I10K-X IR-I10K-Y IR-I10K-Z
IR-I100K-W IR-I100K-X IR-I100K-Y IR-I100K-
IR-R100-W IR-R100-X IR-R100-Y IR-R100-Z
IR-R135-W IR-R135-X IR-R135-Y IR-R135-Z
IR-R500-W IR-R500-X IR-R500-Y IR-R500-Z
IR-R1K-W IR-R1K-X IR-R1K-Y IR-R1K-Z
IR-R5K-W IR-R5K-X IR-R5K-Y IR-R5K-Z
IR-R10K-W IR-R10K-X IR-R10K-Y IR-R10K-Z
IR-R100K-W IR-R100K-X IR-R100K-Y IR-R100K-Z
IR-P100-W IR-P100-X IR-P100-Y IR-P100-Z
IR-P135-W IR-P135-X IR-P135-Y IR-P135-Z
IR-P500-W IR-P500-X IR-P500-Y IR-P500-Z
IR-P1K-W IR-P1K-X IR-P1K-Y IR-P1K-Z
IR-P5K-W IR-P5K-X IR-P5K-Y IR-P5K-Z
IR-P10K-W IR-P10K-X IR-P10K-Y IR-P10K-Z
IR-P100K-W IR-P100K-X IR-P100K-Y IR-P100K-Z
IR-O100-W IR-O100-X IR-O100-Y IR-O100-Z
IR-O135-W IR-O135-X IR-O135-Y IR-O135-Z
IR-O500-W IR-O500-X IR-O500-Y IR-O500-Z
IR-O1K-W IR-O1K-X IR-O1K-Y IR-O1K-Z
IR-O5K-W IR-O5K-X IR-O5K-Y IR-O5K-Z
IR-O10K-W IR-O10K-X IR-O10K-Y IR-O10K-Z
IR-O100K-W IR-O100K-X IR-O100K-Y IR-O100K-Z

设计时应根据具体情况通过编程来选择保护功能或使某些保护功能失效。《低压配电设计规范》GB50054-95第4.3.5条规定：“突然断电比过负载造成的损失更大的线路，其过负载保护应作用于信号而不应作用于切断电路。”在前面提到的消防泵控制系统中，由于消防泵是消防应急负荷，它是在消防救火的紧要关头工作的。当火灾发生时，重要的问题是消防泵能地运转打水到消防管网中，而对消防泵电机的保护就不是重要问题。所以上面提到的某些保护功能可以通过编程使它失效，或者使保护动作于信号而不是作于使消防泵电机停机。前面提到的过载保护功能也只应动作于信号。2）支路保护由于软起动器本身没有短路保护，为保护其中的晶闸管，应该采用快速熔断器（自动空气开关的开断时间较长。
盐城市批发shinhwa继电器SAS-4340A,