170BSM01600限位开关
对机械设备的伤害
全压直接起动时的起动转矩大约为额定转矩的2倍，这么大的力矩突然加在静止的机械设备上，会加速齿轮磨损甚至打齿、加速皮带磨损甚至拉断皮带、加速风叶疲劳甚至折断风叶等等。
软起动的转矩不会超过额定转矩，上述弊端可以克服。
当采用减压起动时，上述危害只有程度的降低；当采用软起动时，上述危害几乎消失；独立变压器供电方式直接起动只能在电网电压波动方面有所缓解，而其它方面的危害都照样存在。
超大型电动机的价值都很高，在生产中也都起着核心作用。它的一点故障便会造成很大的经济损失，对它采用完善的保护是非常必要的。比如说对一台电机我们不能指望它的各处绝缘都是一致的，可能在某一点就有个薄弱环节，出厂试验时它能通过，但在长时间的冲击下这个薄弱环节会逐渐首先显露出来，使其寿命缩短。如果我们采取软起动，则可以大大延长电机的使用寿命，这两种方案哪一个合算呢？这是显而易见的。
开关变压器
当今传动工程中常用的就是三相交流感应电动机。在许多场合中，由于其起动特性，这些电动机涌直接连接电源系统。如果直接在线起动，将会产生高达电机额定电流6倍的浪涌电流。该电流会使供电系统和串联的开关设备过载。如果直接起动，也会产生较高的峰值转矩，这种冲击不但会对驱动电动机产生冲击，而且也会使用机械装置受损。例如：辅助动力传送部（V形带，齿轮）。为了降低直动电流，应使用起动辅助装置，如起动用电抗器或自耦变压器，但使用电抗器或自耦变压器起动等常规方法只能逐步降低电压，而软起动器通过平滑升子电压，可以实现无冲击起动。因此，可以佳地保护电源系统以及电机。
HPMV中、高压软起动器是用多个可控硅串并联而成，可以满足不同的电流及电压要求，控制可控硅的触发角就可以控制输出电压的大小。当电机起动过程中，HPMV按照预先设定的起动曲线增加电机的端电压使电机平滑加速，从而减少了电机起动时对电网、电机本身、相连设备的电气及机械冲击。当电机达到正常转速后，旁路接触器接通。电机起动完毕后，HPMV软起动器继续监控电机并提供故障保护。在软停机时首先按照预先设定好的停机曲线平滑地降低电机的端电压直到电机停机。软停可以解决突然停机引起的水泵水锤现象及机械冲击等相关问题。
HPMV中、高软起动器的操作过程可以分为四过程：起动准备完成、起动过程、运行和停机过程。CPU对所有的过程都提供的保护。
ABPM-50 Ambulatory blood pressure monitor patient Monitor for adult
WALL MOUNT FOR CONTEC CMS8000 MONITOR , 3 FREEDOMS , 13 INCH RAIL ,
VET FDA veterinary Vital signs patient monitor ECG NIBP SPO2 RESP TEMP PR,USA
VET FDA veterinary Vital signs patient monitor ECG NIBP SPO2 RESP TEMP PR,USA
Contec08A Color LCD Electronic Sphygmomanometer Monitor memorable white
Contec08A Color LCD Electronic Sphygmomanometer Monitor Bundle
USA!Pocket Ultrasound Fetal doppler Prenatal Baby Heart Sound Monitor,GEL,FDA&CE
USA!!Contec FDA CE Finger Pulse Oximeter Fingertip Oxygen Monitor SPO2 PR,CMS50C
USA USPS,,Digital LCD Blood Pressure Monitor NIBP Adult cuff +Software,Sale
USA USPS Color LCD 3 Channel 12 Leads ECG/EKG machine PC Software+Printer&Paper
USA Stock!Ultrasound Prenatal Fetal Doppler,Baby Heart beat Monitor,LCD,Free GEL
USA Stock FDA 12''color LCD Portable ICU/CCU Vital Signs Patient Monitor,CMS8000
USA Sonoline B Fetal heart doppler,Contec,Backlight LCD, 3mhz Probe, Gel, CE FDA
USA Sonoline B Fetal doppler /Backlight LCD, baby heart monitor, 3mhz probe, FDA
USA Shipping, FDA color OLED fingertip pulse oximeter SPO2 PR monitor PULSE,50C
USA Shipping Contec Baby Sound A fetal doppler baby heart monitor+Gel,FDA&CE
USA Shipment ,FDA Full Digital Blood Pressure Monitor+Software,NIBP with cuff
USA seller,CE&FDA,CMS50DL Black Color, Fingertip Pulse Oximeter,SPO2,PR Monitor
USA sell,Finger Pulse Oximeter,Blood Oxygen Saturation,SpO2 Monitor,PR,Promotion
USA Hot FDA Prenatal Baby Heart Monitor,Fetal Doppler+GeL,Baby Sound A + Headset
USA Handheld ECG machine Digital One Channel 12-lead EKG+PC Software+Printer,FDA
USA FDA Prenatal Heart Fetal doppler Sonoline B, 3MHZ Probe+ Gel, USA Seller
USA FDA Hot Handheld Baby Heart Sound Pocket Fetal Doppler Fetal Monitor,LCD+GEL
USA FDA Hot CE ECG/EKG machine 12-Leads 3-Channel ECG+Printer&Paper,PC Software
USA FDA Digital Automatic blood pressure monitor,SPO2,PR,NIBP,Software+4 Cuffs
USA Factory, FDA CE ,OLED Oximeter Pulse Finger Tip Monitor Blood Oxygen SpO2,PR
USA Factory Handheld Single Channel 12 Leads ECG/EKG Machine+SW,CE&FDA,Printer
USA Factory CE FDA Portable ECG/EKG machine 12-Leads Single-Ch ECG+Printer&Paper
USA ECG300G 3 Channel 12 lead ECG EKG machine+USB PC software Electrocardiograph
USA CONTEC Sale,FDA CE Finger Pulse Oximeter Fingertip Oxygen Monitor SPO2 PR
USA CONTEC ECG300G Digital 3-Channel Electrocardiograph ECG machine,Software,FDA
USA CONTEC ,CE&FDA CMS50DL Fingertip Pulse Oximeter,SPO2,PR Monitor Black + Case
USA CMS50DL pulse oximeter pulse oxygen saturation SPO2,PR monitor,LED+Case,Blue
USA CE FDA ARM Digital Blood Pressure Monitor CONTEC08A+4 Cuffs+SPO2+PR+Software
US Stock! Limited Promotion Sonoline B Pocket Fetal Doppler Backlight LCD, GEL
US Shipping r Sonoline B Fetal heart doppler /Backlight LCD 3mhz+ gel FDA ,Sale
US seller, ICU Patient Monitor 6 parameter Vital Sign ECG NIBP RESP SPO2 TEMP
US Seller!FDA Portable ECG/EKG machine 12-Leads 3-Channel+Printer&Paper,Software
US Seller Sonoline B Fetal heart doppler /Backlight LCD 3mhz+ gel FDA warranty
US Seller LCD Digital Blood pressure monitor & Heart Beat Monitor, Software, USB
US Seller FDA CMS8000 ICU Vital Signs Patient Monitor CCU Machine 6 Parameters
US seller ,Finger Tip Pulse Oximeter Blood Oxygen SpO2 Monitor FDA CE,Big Sales
US seller ,12 Channels 24 hours ECG EKG holter system Recorder analyzer software
US Sell. 12''color LCD Portable ICU/CCU Vital Signs Patient Monitor,6 Parameters
US Sale FDA 12'color LCD Vet Veterinary Vital Signs Patient Monitor,6 Parameters
US FDA Portable ECG/EKG machine 12-Leads 3-Channel ECG+Printer&Paper,PC Software
US FDA OLED Finger Tip Pulse Oximeter blood oxygen Spo2 PR Monitor CMS50C,CONTEC
US FDA ICU CCU Patient Monitor CMS8000 12.1 INCH Color Vital Signs Monitor ,
US FDA Handheld ECG machine Digital One Channel 12-lead EKG+ PC Software+Printer
US FDA ECG300G 3 Channel 12 leads ECG EKG machine+PC software Electrocardiograph
US FDA Digital Single Channel 12 leads Portable ECG/EKG Machine ECG100G, Printer
US FDA Digital Automatic blood pressure monitor,PR,NIBP Monitor,Software+4 Cuffs
US FDA 12''color LCD Portable ICU/CCU Vital Signs Patient Monitor,6 Parameters
US CE FDA 2.7''Digital Single Channel ECG/EKG machine,electrocardiograph,ECG100G
US CE FDA 12''LCD ICU/CCU Vital Signs Patient Monitor,ECG,SPO2,PR,NIBP,RESP,TEMP
Ultrasound Fetal Doppler,Prenatal Baby Sound Monitor,SONOLINE B, 3MHZ Probe, Gel
SSD DC VOLTAGE TRANSFORMER AH044104U001 / ConTec
Sonotrax Vascular Doppler with LCD and 4MHz Probe, Free Gel
SonoTrax Baby Doppler Basic with 2MHz Probe, Free Gel Prenatal Heartbeat Monitor
Sonoline C1 Fetal Doppler,Baby Heart Monitor, 3Mhz probe, Gel, FDA, USA, Pink
Sonoline C Fetal Doppler, color LCD display,gel, 3Mhz probe, Gel, FDA, USA, Pink
Sonoline B with 3MHz Waterproof probe Free Gel Free AA Batteries
Sonoline B with 3 MHz probe Free Gel and AA Batteries
Sonoline B with 3 MHz probe and Free Gel
Sonoline B ultrasound Fetal doppler Baby Prenatal Heart Monitor 3mhz Probe +GEL
Sonoline B Handheld Fetal heart doppler LCD 3mhz+gel,CE FDA US Seller 1y warrnty
Sonoline B Handheld Fetal Doppler Ultrasonic Doppler Baby Monitor 3Mhz FDA+Gel
Sonoline B Fetal heart doppler, Backlight LCD, FDA, US Seller 1y warranty, Blue
Sonoline B Fetal heart doppler /Backlight LCD 3mhz+battery & 3 gel FDA US Seller
Sonoline B Fetal heart doppler /Backlight LCD 3mhz+battery & 2 gel FDA US Seller
Sonoline B Fetal heart doppler /Backlight LCD 3mhz+ gel FDA US Seller 1y warrnty
Sonoline B Fetal heart doppler /Backlight LCD 3mhz+ battery & 2gel FDA US Seller
Sonoline B Fetal heart doppler /Backlight LCD 3mhz Probe+gel FDA ,2Y warranty
Sonoline B Fetal heart doppler /Backlight LCD 3mhz FDA US Seller 1y warrnty
Sonoline B Fetal doppler/Backlight LCD,baby heart monitor,3mhz probe+ Gel,FDA/CE
Sonoline B 3Mhz Probe Fetal Doppler LCD Backlight Speaker Prenatal Doppler+Gel
Single Channel 12 Leads Portable ECG/EKG Machine with printer,ECG100G USA Seller
Ship From USA,tracking number,Adult cuff+Analysis SW
Sale!!FDA Portable ICU/CCU Patient Monitor Vital Sign ECG NIBP RESP TEMP SPO2 PR
Rolling stand for Welch Allyn Propaq LT PATIENT (small wheel ) IN USA
Rolling stand for CONTEC CMS8000 CMS-8000 PATIENT monitor (big wheel) IN USA
Rolling stand for CONTEC CMS6000 CMS-6000 PATIENT monitor (big wheel) IN USA
Rolling stand for Contec CMS 6000 CMS6000 PATIENT (small wheel ) IN USA
Rolling stand for comen c50 c60 c80 PATIENT monitor (big wheel) IN USA
Rolling Roll stand for contec cms 8000 cms8000 patient monitor (small wheel)
Rolling Roll stand for comen c50 c60 c80 patient monitor (small wheel)
Purple Blue Baby Sound B Fetal Heart Doppler, Gel & Batteries, USA fast ship!
Promotion!Handheld Fetal heart doppler /Backlight LCD 3mhz + gel FDA 2y warrnty
Promotion FDA CE LCD Hand-held Pocket Fetal Doppler,Baby Heart Beat Monitor+Gel
Portable Contec ECG Machine
Portable Blood Pressure Patient Oximeter Monitor NIBP SPO2 Contec PM-50
Portable Blood Pressure Patient monitor Oximeter Monitor NIBP SPO2 Contec PM-50
PNHS-99 - CONTEC - Polyester Knit Wipe - 150 wipes/bag
Plastic Carrying Case for Contec SPO2 Oximeter sectional insert not included
Pink Baby Sound B Fetal Heart Doppler, Gel & Batteries Included, USA fast ship!
Pink Baby Sound B Fetal Heart Doppler w/ Gel, battery, earphone, audio cord.
Pediatric contec-08A Digital automatic blood pressure monitor for child
Patient Monitor CMS8000 - Color Display - NIBP ECG SPO2 TEMPERATURE
one CHILD SIZE Cuff for CONTEC blood pressure monitor ABPM-50
On Sale!! FDA Portable ECG/EKG machine 12-Leads 3-Channel+Printer&Paper,Software
Nubee®/Contec 50D1 Pulse Oximeter
Nikon Optistation 7 Contec PC-586U(PC)-LV Single Board Computer 32MB RAM 133MHz
,Contec CE&FDA Pocket Fetal Doppler,Baby Heart Monitor,free Gel ,Baby sound B
!! CONTEC AD16-16(PCI)EV ANALOG INPUT BOARD 16-CHANNELS 12-BIT
!! CONTEC AD16-16(PCI)EV ANALOG INPUT BOARD 16-CHANNELS 12-BIT
LISTING FDA CE ,CONTEC Sale,Finger Pulse Oximeter Fingertip Oxygen Monitor SPO2 PR,sale
LISTING FDA CE ,CONTEC Sale,Finger Pulse Oximeter Fingertip Oxygen Monitor SPO2 PR 50C
ICU Patient Monitor ECG+NIBP+Spo2+PR+Resp+Temp CMS9200
Finger tip Pulse Oximeter,Blood Oxygen SpO2,PR Monitor,FDA,Case,CONTEC-USA
ECG Print paper for contec ECG80A 50mm*20m
Digital Blood Pressure Monitor Sphygmomanometer Alarm +Free Software,Sales
Contec Sonoline B Pocket Fetal Heart Doppler CE FDA Approved plus Gel
Contec Pocket Fetal Doppler Baby Sound B. Heart Monitor
contec Model 08c Digital automatic blood pressure monitor for adult
Contec IPC-BX/M400 Power Supply Industrial PC Box 100A Computer IPC-POA100A
Contec EPD-37 Screw Terminal M3.5x 37 D-Sub Connector, NIB, WARRANTY
CONTEC DTP 3 (PC) CABLE 17J 37 MADE IN JAPAN INDUSTRIAL ELECTRICAL
CONTEC BUS-PC(PC)E NO. 7023F BUS EXPANSION ADAPTER W/ 217-1T CABLE BN
CONTEC BUS-PAC(PC)E NO. 7024F BUS EXPANSION ADAPTER W/ 217-1T CABLE GL
CONTEC Board # TIR-6(98) 9126A
CONTEC Board # PI-96T (98) K - PC Module -- BRAND IN BOX - BNIB
blood pressure monitor BP-103 Digital arm-type fully automatic
MRC Eclipse Contec Chassis EEJA Card Cage FA-PAC(PC) Working
Medical Monitor Multi Parameter Digital Color NIBP ECG SPO2 TEMPERATURE CMS8000
manufacturer Contec Medical Systems! FDA pass CMS8000
los barcos de Estados Unidos, llega en 3 a 5 dias
Los barcos de Estados Unidos, Consigue en 3 a 5 Dias
Lifetime Support Included - Houston, Texas USA Warranty
LCD pocket fetal doppler/prenatal heart monitor sonoline B baby heart beat+Gel
LCD Display Fetal Doppler,Baby Heart Beat Monitor,US SELLER,Baby Sound B FDA&CE
Hot,CONTEC,Finger Pulse Oximeter,Blood Oxygen Saturation,SpO2,CMS50B,USA Sell
Hot USA FDA Handheld 24h 12-leads Dynamic ECG System with PC software,12 channel
Hot US FDA Handheld ECG machine Digital One Channel 12-lead EKG+Software+Printer
Fingertip Pulse Oximeter Contec CMS-50L FDA CE Certified Spo2 Monitor LED
Fetal Doppler Baby Heart Monitor BabySound A Doppler USA Seller
Fedex FDA 12''USA ICU/CCU Vital Signs Patient Monitor,ECG,SPO2,PR,NIBP,RESP,TEMP
Fedex CE FDA 12'color LCD Vet Veterinary Vital Sign Patient Monitor,6 Parameters
FDA/CE Approved Baby Heart Monitor
FDA, Sonoline B Fetal Doppler 3MHz Probe, Baby Heart Monitor, Backlight LCD+GeL
FDA, LCD Single Channel ECG Machine EKG Monitor with Thermal Printer, ECG100G US
FDA, ICU/CCU Patient Monitor 6 parameter Vital Sign ECG NIBP RESP TEMP SPO2 PR
FDA USA LCD Desktop Electronic Sphygmomanometer,NIBP,PR Monitor,Free Software
FDA US Hot Pocket Fetal heart doppler Prenatal Baby Heart Sound Monitor Free GEL
FDA US Contec CMS50C OLED Finger Tip Pulse Oximeter Heart Beat Monitor SPO2 pr
FDA Sonoline B Fetal Doppler 3M Probe, Baby Heart Monitor,Backlight LCD, GeL,USA
FDA Sonoline B 3M fetal doppler, Backlight LCD, Prenatal Heart Monitor, Free Gel
FDA Promotion Finger Tip Pulse Oximeter CMS50B, Spo2 Pulse Rate Monitor, CONTEC
FDA Promotion CONTEC CMS8000, ECG/EKG NIBP SPO2 PR RESP TEMP PR, US Seller
FDA Professional Portable Veterinary ICU Patient Monitor Vet Machine 6 Parameter
FDA Portable Vet Veterinary Vital Signs Patient Monitor,6 Parameters,USA,CMS8000
FDA Pocket Prenatal Fetal Doppler,Baby Heart beat Monitor,LCD,Free GEL,Earphone
FDA On Sale!3MHZ LCD Handheld Pocket Fetal Doppler,Baby Heart Beat Monitor+Gel
FDA Pocket fetal doppler, Baby Sound A Prenatal Baby Heart Rate Monitor+Gel
FDA Automatic Blood Pressure Monitor Machine Pulse Heart Rate Software Cuff
FDA ICU CCU Patient Monitor Vital Signs Monitor 6 ParameterS 12.1'' Color LCD
FDA Fetal Doppler 3MHz Probe, Baby Heart Monitor, Backlight LCD, GeL,Sonoline B
FDA Fetal Doppler , Baby Heart Monitor, Backlight LCD, GeL,Sonoline B 3MHz Probe
FDA Factory 12 Channel 24 hours ECG EKG holter system Recorder analyzer software
FDA ECG80A 1 Channel 12 leadS ECG EKG machine+USB+PC software Electrocardiograph
FDA Digital Single Channel 12 leads ECG/EKG Electrocardiograph ECG100G + printer
FDA Digital Single Channel 12 lead Portable ECG/EKG Machine ECG100G with printer
FDA Contec08C Digital Blood Pressure Monitor Spo2 Monitor Pulse Rate + Software
FDA CONTEC Ultrosonic Baby Heart Monitor Baby sound A, Free Gel, US Seller
FDA Contec LED Finger Tip Pulse Oximeter Spo2 Monitor Blood Oyxgen CMS50DL+CASE
FDA CE ,CONTEC Sale,Finger Pulse Oximeter Fingertip Oxygen Monitor SPO2 PR 50C
FDA Blue Fingertip Pulse oximeter, blood oxygen monitor CMS50DL,CONTEC US Seller
FDA 24H CONTEC Abpm50 Ambulatory Blood Pressure Monitor+CD Software+Cuff,NIBP,PR
FDA 12'color Vet Veterinary Vital Signs Patient Monitor,6 Parameters,USA,CMS8000
FDA 12''color LCD Portable ICU/CCU Vital Signs Patient Monitor,6 Parameters,HOT
FDA ,Sonoline B ,Fetal doppler/Backlight LCD, baby heart monitor,3mhz probe+ GEL
FDA ,Fetal doppler/Backlight LCD, baby heart monitor,3mhz probe+ GEL,SonolineB
FDA , ECG,SPO2,PR,NIBP,RESP,TEMP, 3-5 days delivered
FDA , ECG,SPO2,PR,NIBP,RESP,TEMP, 3-5 days delivered
FDA , ECG,SPO2,PR,NIBP,RESP,TEMP, 3-5 days delivered
FDA &CE Approved Pockect Fetal Doppler (CONTEC Baby Sound A) USA Seller
Factory USA FDA 12'LCD Vet Veterinary Patient Monitor,ECG,SPO2,PR,NIB
豫公安备 41010502000017号