DS7120501

变频调速技术对风机泵类调速的优势，利用变频技术对风机泵类进行调速消除了启动冲击，实现了电机的软启动与软停运，使电机能够平稳地运行，减少了轴承的机械磨损，降低了设备的维护费用。由n=60f（1―S）/p可以看出，电机的转速与电机输入电源频率成正比，所以变频器的使用可以实现对电动机转速的任意调节，且属于平滑无极调速，相比于传统的方法可以使设备运行稳定，节约电能。

　　变频器在对风机进行调速的同时还对风机具有缺相保护、短路保护相间短路保护等作用。变频调速技术可以在满足生产工艺的要求下维持较高的功率因数，有助于提高设备的工作效率。结束语目前，利用变频调速技术对风机和泵类等工业设备进行调速已经得到了广泛的使用，实践证明这种方法具有很好的节电效果，是一种很好的调速方案。但是在变频器的选择过程中要特别注意变频器的容量，依据实际情况选择合适的容量可以进一步降低能耗。这种调速方案虽然前期投入比较大，但是运行一段时间后，就可以靠节能将前期费用收回，是一种非常值得推广的调速方案。
变频器是利用电力半导体器件的通断作用将工频电源变换为另一频率的电能控制装置。随着现代电力电子技术和微电子技术的迅猛发展，高压大功率变频调速装置不断地成熟起来，原来一直难于解决的高压问题，近年来通过器件串联或单元串联得到了很好的解决。

　　变频器在高温下的注意事项：

　　1、认真监视并记录变频器人机界面上的各显示参数，发现异常应即时反映

　　2、认真监视并记录变频室的环境温度，环境温度应在-5℃~40℃之间。移相变压器的温升不能超过130℃

　　3、夏季温度较高时，应加强变频器安装场地的通风散热。确保周围空气中不含有过量的尘埃，酸、盐、腐蚀性及爆炸性气体

　　4、夏季是多雨季节，应防止雨水进入变频器内部

　　5、变频器柜门上的过滤网通常每周应清扫一次；如工作环境灰尘较多，清扫间隔还应根据实际情况缩短

　　6、变频器正常运行中，一张标准厚度的A4纸应能牢固的吸附在柜门进风口过滤网上

　　7、变频室必须保持干净整洁，应根据现场实际情况随时清扫。

　　8、变频室的通风、照明必须良好，通风散热设备能够正常运转。

　　在大型电力电子设备中，随着温度的增加，失效率也增加，因此大功率高压变频器功率器件的热设计直接关系到设备的可靠性与稳定性。大功率高压变频器往往要求有极高的可靠性，影响电力电子设备失效的主要形式是热失效，据统计，50%以上的电子热失效主要是由于温度超过额定值引起的。从结构设计上来说散热技术是保证设备正常运行的关键环节。由于三环公司高压变频器设备功率大，一般为MW级，在正常工作时，会产生大量的热量。为保证设备的正常工作，把大量的热量散发出去，优化散热与通风方案，进行合理的设计与计算，实现设备的高效散热，对于提高设备的可靠性是十分必要的。

　　散热计算

　　高压变频器在正常工作时，热量来源主要是隔离变压器、电抗器、功率单元、控制系统等，其中作为主电路电子开关的功率器件的散热、功率单元的散热设计及功率柜的散热与通风设计最为重要。

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14:工业机器人系统备件。
Fanuc A06B-6093-H101 SERVO AMPLIFIER UNIT , USED

KOGANEI VR200  VACUUM REGULATOR -1.3-100KPa  ,  USED

AMAT 0040-88092 BRACKET, LIGHT CURTAIN CONTROLLER MOUNTI , NEW

AMAT 0150-04723 CABLE ASSY EMC COMP PUMP , NEW

AMAT 0150-16437 CABLE ASSY HEATER AC POWER, NEW

AMAT 0150-13150 C/A RS232 FIC TO RIGHT FA, NEW

AMAT 0090-77244 HARNESS NH4OH HIGH LEVEL SENSOR , USED

AMAT 0090-77246 HARNESS, NH4OH LL LEVEL SENSOR , USED

AMAT 0150-77206 CNTRL BKHD PAD CONDITION 3 P5,USED

FUJI ELECTRIC TR-ON/3 Thermal Overload Relay, USED

AMAT 0150-25606 FES SERIAL CARD, NEW

AMAT 0140-23382 REV 02 11838000, NEW

EBRAIN 650-FA03B BOARD , USED

SMC SFB100 Gas Filter Cartridge , USED

AMAT 0150-04840 C/A PWR SUP TO INDEXER B-, NEW

NOVELLUS 03-448088-00 CBL ASSY, FAC INTFC, JUMPER, SOLA, NEW

AMAT 0140-11272 HARNESS ASSEMBLY , NEW

PHOENIX CONTACT DEK1.5 RELAY , USED

TEAC 193077A3-90 Floppy Drive Internal 3.5 FD-235HG , USED

SMC IRV2000-02 VACUUM REGULATOR, USED

Corega Tap HUB8L 8-Port/10M Ethernet Hub ,  USED

Telemecanique LC1F225 CONTACTOR, WORKING

GENUS MP 25657-00 MFM SET PT , USED

AMAT 0090-01229 ASSY COVER INTLK SENSOR 3 , NEW

ORIENTAL MOTOR CSD5807N-P PU4AQ31309, USED

AMAT 0150-35301 C/A GND UPPER MANFR CHAS, NEW

AMAT 0140-03399 H/A 300MM EQUIPMENT SAFET , NEW

AMAT 3300-03956 FTG, TBG ADPTR EL 3/8T X 1/4 MNPT PFA, NEW

AMAT 0150-09921 CABLE ASSY OZONATOR N2 MFC & DUAL FREQ , USED

AMAT 0150-09641 CABLE ASSY REMOTE ANALOG TO DUAL FREQ IN , USED

AMAT 0150-09017 ASSY FLT CABLE CHMBR INT B 40 POS , USED

AMAT 0140-09230 HARNESS ASSY N2 PURGE INT. Y-CONNECTION , USED

AMAT 0620-01694 CABLE ASSY NETWORK .7FT W/MODULAR PLUG,  NEW

GE Fanuc IC693MDL940H OUTPUT RELAY 2A 16 PT , USED

TOKYO KEISO VF-3012-P01 FLOW SENSOR, USED

MITSUBISHI CP30-BA POLE 2 CIRCUIT PROTECTOR, USED

TEL EC80-000180-12 TEB211-12 GRSO, USED

AMAT 0090-02924 BRUSH BAR OPEN SWITCH RIGHT, USED

AMAT 0090-02925 BRUSH BAR CLOSED SWITCH LEFT, USED

AMAT 0090-02926 BRUSH BAR CLOSED SWITCH RIGHT, USED

Nihon Inter Electronics NIEC PDT10016 THYRISTOR MODULE, USED

TKD ZRAC2203-11 NOISE FILTER 250V, USED

Advance 2240-V92CBI-01 Chemical valve, USED

AMAT 0100-77055 PCB ASSEMBLY HEAD PNEUMATIC TITAN-2, NEW

AMAT 0021-77384 GIMBAL, FLEXURE , USED

AMAT 0140-09090 HARNESS ASSY LAMP/MAG CONTROL C , USED

RKC INSTRUMENT CVM-5A FAREX SR MiNi SYSTEM, USED

AMAT 0020-22838 LIFT HOOP, PRECLEAN, USED

Omron E3X-MDA11 Photoelectric Switch Amplifier Fiberoptics , USED

AMAT 0150-35286 C/A CHAMBER PNEUMATICS, NEW

AMAT 0150-36395 C/A 300MM RTP EMO MF TO C , NEW

Allied Telesis CentreCOM FS708XL Fast Ethernet Switch, WORKING

AMAT 3060-00275 BALL BEARING 12MM BORE X 28MM OD X 8MM W/ VIT, NEW

AMAT 0021-23335 LOCK SPLASH GUARD HOUSING SCRUBBER, NEW

AMAT 0021-77124 STAND, ROLLER ASSY, SCRUBBER, NEW

AMAT 0020-77433 SPACER, NEW

SMC ITV2050-402S-X80 Electropneumatic Air Pressure Regulator, USED

SMC SX5140R-5MZ VALVE SOL, USED

SMC SX-5440-5LOZ-X22 VALVE SOL, USED

AMAT 0021-11224 WAFER SENSOR PLUNGER FOR TUNGSTEN HEAD , USED

Fujikin Type N.C.0.34-0.49MPa 316L StainlessSteel Pneumatic Dual Diaphragm ValVe

CKD N3E0660 Pneumatic Valve, LOT 10, USED

Kitz  316 Stainless Steel Valve 3/8" NPT 30K-3/8  Swagelok Parker,USED

SMC LLD1B-03-01-X14,LVD10-33A-X16 ×2,LVD11-33A-X16, VALVE, USED

AMAT 0140-07897 HARN ASSY, SYS AC XP MOTI, NEW

AMAT 0150-36945 UWAVE CAVITY INTRLK CABLE ,  NEW

KEYENCE KV-B16XA  Input Module , USED

Copal PA-850 Pressure Transducer, USED

AMAT 0150-09461 CABLE ASSY SACVD CHAMBER LID INTERLOCK , USED

SMC ISE40-T1-62 PRESSER SWITCH , USED

AMAT 0020-77372 GEAR, SWEEP, DRIVING, NEW

MITSUBISHI ZT40B ZERO PHASE Current Transformer for E.L.Ralay, USED

FULLTECH UF-18JC11 FAN , USED

AMAT 0150-00940 C/A TRANSFER CH LID INTER, NEW

AMAT 3700-05997 ORING 0.362X0.103 8085 KALREZ , NEW

AMAT 3700-03303 ORING 0.299X0.103 6375 KALREZ , NEW

AMAT 0190-77183 BEARING, BALL, .75IDX1.1875OD, UNOCOL UN, USED

AMAT 0020-79171 BEARING CLAMP, USED

TOKYO ELECTRON 2184-020046-11 PCB, I/F..TTLS05-11 MMI-INTFC PCB, USED

Nihon Inter Electronics NIEC PDT10016 THYRISTOR MODULE, USED

RORZE RS-114A SENSOR MATE, USED

YAMAMOTO EMD7 EMD7D3P1D digital differential pressure gauge 12-24VDC, USED

AMAT 0150-20891 C/A HDD INTCON , NEW

LAMBDA JWS150-24/A POWER SUPPLY 2.1A 24V, USED

Swagelok SS-QC6-D-6PB QUICK CONNECTOR, NEW

Swagelok SS-4MG-VCR-MH  Medium-Flow Metering Valve,USED

Nupro SS-BNV51 Valve , USED

Nupro SS-4BK-V51-10 Valve , USED

PATTLITE WME-AFB 24V AC/DC 1.2W Wall Mount Tower ,  USED

IDEC EMERGENCY HW-CB22 EN60947-5-1 stop button switch ,  USED

CKD VYX-0022FL VALVE, USED

CKD NAB-10X1175 VALVE, USED

AMAT 3880-01028 WSHR LKG SPLIT #3/8.680 OD X .385 ID X ., NEW, LOT 10

AMAT 0140-77358 CABLE, CROSS ALARM-ROBOT, NEW

AMAT 0021-79220 CLAMP, 200MM, WALKING BEAM, NEW

AMAT 0140-18549 HARNESS ASSY XFER PRESS T , NEW

AMAT 0140-17205 HARNESS ASSY HX TC OVERTE , NEW

AMAT 0140-17203 WIRE SET HX TC OVERTEMP I , NEW

AMAT 0140-14182 HARNESS ASSY LIGHT TOWER , NEW

AMAT 0140-08777 HARNESS ASSY CH A PNEU EV , NEW

AMAT 0140-08047 HARN ASSY, 208VAC PWR PDO , NEW

AMAT 0140-00407 HARNESS ASSY, SLIT LINER/ , NEW

AMAT 0150-00245 REV : C , NEW

AMAT 0150-00244 REV : C , NEW

AMAT 0226-98553 CABLE ASSY CHAMBER AC TRU , NEW

AMAT 0140-27173 HARNESS ASSY, CH A SERVO , NEW

AMAT 0140-24398 HARNESS ASSY FI PC TO KVM , NEW

AMAT 0140-11856 LFT FACIL , NEW

NOVELLUS 002-8838-04 ASSY, CABLE, CONTROLLER-8 SIGNAL 15FT , NEW

AMAT 0140-14351 HARNESS ASSY MAINFRAME IN , NEW

AMAT 0150-03704 CABLE ASSY AE RPS POWER 3 , NEW

AMAT 0190-26703 CABLE ASSY, MAG DRVR TO MA, NEW

AMAT 0140-24766 HARNESS ASSY W453 LOWER L , NEW

AMAT 0150-21357 CABLE, CHAMBER 1 INTCNT  , NEW

AMAT 0190-25360 CABLE ASSEMBLY HN (M) R/A TO HN (M) R/A WITH RG  , NEW

AMAT 0190-15700 DC POWER SUPPLY  , NEW

AMAT 0050-83207 HOSE ASSEMBLY HEAT EXCHANGER 1/2 DIA 10FT , NEW

AMAT 0190-01126 C/A PHOTOHELIC DIFF PRESS , NEW

AMAT 0140-24291 REV : 03 , NEW

AMAT 0140-77149 REV : A, NEW

AMAT 0150-13155 CABLE POWER 5 KVA XFMR TO, NEW

AMAT 0050-82774 HOSE ASSEMBLY COOLIING WATER RETURN OZONE SACVD PROD, NEW

AMAT 0140-14852 HARNESS ASSY MAINFRAME I/O DIS, NEW

AMAT 0140-05082 H/A CONTBULK HEADSWEEP, NEW

AMAT 0150-12116 CABLE ASSY H.P. DC SOURCE , NEW

AMAT 0150-35539 CABLE ASSY GAS PANEL POWE , NEW

AMAT 0150-04723 CABLE ASSY EMC COMP PUMP , NEW

AMAT 0050-82775 HOSE ASSEMBLY, COOOLING WATER SUPPLY ETHERNA OZONE , NEW

AMAT 0140-16508 HARNESS ASSY 208VAC & RTD , NEW

AMAT 0140-16859 HARNESS ASSY AC PWR CH-F, NEW

AMAT 0150-06838 C/A OPERATOR INTERFACE EV, NEW

AMAT 0140-24767 H/A LOWER LAMP MODULE CON , NEW

AMAT 0150-76186 EMC COMP, ASSY CABLE PUMP, NEW

AMAT 0140-36174 H/A, PUMP INTF, PWR, 50FT, NEW

AMAT 0150-13313 CABLE ASSY RTA POWER SC E, NEW

BROOKS AUTOMATION 002-9791-05 REV : E , NEW

AMAT 129268-0001 REV : B , NEW

NOVELLUS 001-9348-04  REV : C, NEW

NOVELLUS 002-7738-01 SUP ID 4461, NEW

NOVELLUS 001-9354-01 CABLE ASSY, CASSETTE PRESENT VCE-4, NEW

AMAT 0620-00117 CABLE ASSY DNET DROP 2.5METER 300V 80C WSC-RKC, NEW

AMAT 3880-01155 WSHR FLAT .505 ID X 1.250 OD SST .125 THK, NEW

AMAT 0140-78156 CABLE, ANALOG OUTPUT,MEGASONIC PS ,USED

AMAT 0040-00560 REAR SHIELD , USED

SBS TECHNOLOGIES 91910401 RevA9063 XM-OCTAL-I/O , USED

AMAT 0620-02354 CABLE ASSY DNET TRUBK 5.0METER 300V 80C RSM-RKM, NEW

AMAT 0140-77471 BURKERT VAVLE CABLE, INNER TUBE, NEW

Sick WL12-2B560  Photoelectric Reflex Sensor 1016080,USED

EXCEL PRECISION 1031A Receiver , USED

RDI 2M26FC TERMINAL BLOCK INTERFACE MODULE

BLACK BOX AC245A KEYBOARD & MOUSE GHOST, WORKING

MKS 41A12DCA2AF003 Baratron Pressure Switch 100 Torr-G , USED

AMAT 0150-37074 CABLE ASSY, INTERLOCK-LED 2KW HF.RF. GEN , USED

AMAT 0190-02591 CAP SCREW, 6-32 X 3/4 HEX SKT/SLOT HEAD, HASTELLOY , LOT OF 8

AMAT 0140-21750 HARNESS ASSY SIP- CU/WTR, NEW

AMAT 0140-21285 H/A AC POWER MONOLITH HTR, NEW

AMAT 0150-11509 REV : 002, NEW

AMAT 0150-13488 REV : 002,  NEW

AMAT 0140-35316 H/A DOOR SW JUMPER , NEW

AMAT 0150-08330 CABLE ASSY GROUNDING WIRE , NEW

AMAT 0140-75368 HARNESS ASSY DRIVES INTERCONNECT, CMP CO , USED

AMAT 0140-77140 CABLE, BACKPLANE BOARD , USED

PHOENIX CONTACT SACB-10/3-L-M16 Actuator Box , USED

AMAT 3300-04185 SWIVEL ELBOW FITTING, NEW, LOT 10

AMAT 0020-77423 ADJUSTING BRACKET, NEW

AMAT 3020-01133 CYLINDER, AIR 12MMX40MM, NEW

AMAT 0040-84050 MOUNTING BLOCK, ADJUSTABLE ASSY, BRUSH M , USED

MYKROLIS WG3SS1WW2 SURFACE MOUNT FILTER , USED

AMAT 0190-02589 CAP SCREW, 4-40 X .35, HEX SKT/SLOT HEAD HAST , LOT OF 18

AMAT 0150-02655 CABLE ASSY DMS SIGNAL VME , NEW

AMAT 0150-01280 CABLE ASSY LIMIT SWITCH A  , NEW

AMAT 0140-03399 H/A 300MM EQUIPMENT SAFET , NEW

UE Precision PV48W-68 Vacuum Switch Actuation Press 4.0mm Hg 125/250VAC 5A

AMAT 0140-70085 HARN,CASSETTE HANDLER INTER. W/BRAKE , USED

LAM RESEARCH 796-009365-001 HOSE METAL FLEX NW40 10 IN, NEW

PALL GLFPF3000-VM4, 4HS-A4961-1 Mini-gasklean in-line filter , USED

AMAT 0150-07880 HARNESS ASSY, POWER, LINE HTR JACKET,CHC , NEW

AMAT 0140-37832 HARNESS ASSY, T-ADPTR, SW , NEW

OMRON DRT2-ID16 REMOTE TERMINAL, 24V DC 6 mA/Point, USED

AMAT 3630-01238 RTNR RING EXT 5MM SFT .62MM TH, NEW, LOT 3

AMAT 0021-78144 SHAFT PULLEY INPUT SHUTTLE, NEW, LOT 2

AMAT 0090-77173 WAFER PRESENT SWITCH, OUTPUT, USED

AMAT 0270-02883 BLANK OFF, BLOCK GAS FEED, HDPCVD, NEW

RKC INSTRUMENT COM-A Communication Converter 240V 5VA, USED

OMRON GCN1-100 CONNECTION CABLE, USED

OMRON CPM2C-10CDR-D PROGRAMMABLE CONTROLLER, 24V 4W, USED

TOKYO ELECTRON 3108-060002-11 3181-060002-12 CONNECT-I/O16, USED

Ferraz Shawmut Z330026 Protistor FUSE, 660-690V AC, 160A, LOT 2, USED

CKD N4S020 Valve Block 4 PORT VALVE, 2 Position Double, LOT 5, USED

SMC LVDA10-01-C-X18 single Valve,USED

Advance 2240-CBIZ3AB5-02 Chemical valve, USED

SMC D-A73 Reed Switch 24VDC 100VAC,USED

AMAT 0090-77157 WAFER FLAT SWITCH, WORKING

YASKAWA ELECTRIC CORPORATION JUSP-RA05 RESISTOR UNIT, USED

AMAT 0010-77795 SPRAY BAR ASSY, HIGH PRECISION , USED

AMAT 3700-00629 SEAL ASSY PERLAST WITH SST NW50 CTR RING, NEW

SMC SZ3160K-5MOZ-C4-X14 SUPPLY PRESS 0.15-0.7Mpa, USED

Agilent 10780F REMOTE RECEIVER , USED

AMAT 0010-34966 OPERATOR INTERFACE, WORKING

AMAT 0020-79087 INNER CLAMP , USED

AMAT 0190-77116 FLEXIBLE DISK , USED

DALSA BO-L1-04K25-00E CONTROLLER , USED

AMAT 0200-35841 PUMPING RING, CERAMIC, GIGA-FILL SACVD , NEW

AMAT 0040-76957 SPLASH GUARD DRIVE SIDE BRUSH MODULE 200 , USED

Hitachi ZVL808-0 PCP, USED

AMAT 0150-09607 CABLE ASSY,FLOW SWITCH, CVD, SST , USED

AMAT 0150-04714 CABLE ASSY, 75FT RS232 O, NEW

SMC AR20-01E-R , AF20-01-R Modular Style Regulator / Air Filter ,  USED

KARUMAN ACE SAGINOMIYA FLOW METER 0.4-3.5 L/min TYPE: SLK SLK-0532T09, USED

AMAT 0720-01249 SCR PAN HD 8-32X1/2L TORX T20 316SSEP,  NEW

AMAT 3870-02057 VALVE 3-WAY TEFLON FLAREGRIP OD TUBE 1/4 , USED

AMAT 0190-77220 SCR CAP SKT HD 6-32X3/8L HEX SKT/SLOT HA , LOT OF 16

NOVELLUS 002-7738-01 SUP ID 4461, NEW

AMAT 0140-24291 REV : 03 , NEW

AMAT 0020-77374 GEAR, USED

AMAT 0190-15700 DC POWER SUPPLY  , NEW

Delta Tau PMAC-PC ACC14-D Assy NO 602193-104 , USED

AMAT 0021-03121 BRACKET,CABLE CARRIER,RGT STDF,200MM SMI, NEW

AMAT 1110-01030 NTWRK SPLITTER DNET 8 DROP PASSIVE 24VDC , USED

OMRON G6B-4BND RELAY TERMINAL BLOCK COIL 24VDC, USED

CKD 4GA121 Solenoid Valve,USED

ADAM ADAM-4018 Data Acquisition Module, Used

Hitachi  ZVC041 BOARD , USED

AMAT 0020-20672 CHAMBER PLUG, LOWER PLATEN, NEW

AMAT 0020-79244 KEY SPACER TRAVEL HUB, NEW

AMAT 0090-77173 WAFER PRESENT SWITCH, OUTPUT, USED

SMC LVC40-S13 TEFLON VALVE, USED

TELEMECANIQUE LC1D256BL CONTACTOR, USED

TELEMECANIQUE LA1KN31 CONTACT BLOCK, USED

TELEMECANIQUE LA1KN40 CONTACT BLOCK, USED

TOFLO HELICAL FLOW  ANALOG 4~20mA, USED

SMC Pneumatic Pressure Gauge 0-0.7 MPa,USED

SMC ARJ210-M5BG SET PRESS REGULATOR , USED

SMC AFM30-03C-R Pneumatic Modular Mist Separator  ,  USED

AMAT 0226-98550 CABLE ASSY CHAMBER A TPU, NEW

AMAT 0226-98554 CABLE ASSY CHAMBER D TRU, NEW