ICS TRUSTED T8231 Rockwell Allen-Bradley 

2.1 電力電子技術(shù)在電氣控制系統(tǒng)中軟開關(guān)控制裝置中的應(yīng)用 

在電子技術(shù)和電力系統(tǒng)的不斷發(fā)展下，電力系統(tǒng)本身對電磁的兼容性和工作效率要求提升，為此，需要電力裝置系統(tǒng)進行改進，提升裝置本身的輕便型和小型化。在傳統(tǒng)的電力系統(tǒng)中，一般是通過開關(guān)控制來節(jié)省變壓器和電容器元件空間。但是這種開關(guān)控制的方式會帶來巨大的損耗，影響了電路發(fā)展效率，嚴重的還會產(chǎn)生一種額外的電磁干擾。電力電子技術(shù)支持下的軟開關(guān)控制裝置在某種程度上解決了噪音和過多損耗的問題，被相關(guān)人員廣泛的應(yīng)用在電力系統(tǒng)中。電力電子技術(shù)支持下的軟開關(guān)控制裝置在開關(guān)頻率大于1Mhz的情況下，也能夠保證自身性能達到最好的狀態(tài)，有效將各個簡單的電路并聯(lián)形成一種新的組合電路，有效提升了電力系統(tǒng)性能，被廣泛的應(yīng)用到各個領(lǐng)域中。 

2.2 電氣控制系統(tǒng)中的過電流保護 

電力電子電路在出現(xiàn)運行故障之后會出現(xiàn)過電流的現(xiàn)象。針對這種問題的解決以往采用的是盡快切斷熔斷器、直流快速斷路器以及電流繼電器的方式來保護電力電子主要電路。但是現(xiàn)階段的電力電子器件變得越來越小，功率性能越來越大，傳統(tǒng)的保護系統(tǒng)裝置無法再起到作用。因而，為了減少過電流的現(xiàn)象，人們開始關(guān)注自動去除驅(qū)動控制信號方式。具體是指通過設(shè)置專門的過電流保護電子電路，對檢測過電流之后及時發(fā)出、調(diào)節(jié)或者驅(qū)動電路。 ?

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 【誠信經(jīng)營】【質(zhì)量可靠】【進口原裝】【拆包防偽】

  

 【大量庫存】【當天付款】【順豐速運】【歡迎搶購】

LINEAR MOTION TRANSDUCER SENSOR COLLINS LMT-149T01

 

MARTIN SPROCKET GEAR CHAIN COUPLING # D60B23H BORE: 1-3/4" NEW

 

LEESON 2HP AC MOTOR WASHDOWN #G131635.00 230/460VAC 60HZ. 1200RPM

 

BROWNING SPEED REDUCER # CBN3363SB3AP TORQUE: 6100 IN-LBS RATIO: 160:1 NEW!

 

CANON FAN #CF60-H313NID 24VDC 50MA. (SET OF 2 FANS) WITH MOUNTING BRACKET

 

POTTER & BRUMFIELD TIME DELAY RELAY CDD-38-300003 24V.

 

GEARHEAD STEP MOTOR SAIA-BURGESS 100cNm MAX. TORQUE

 

MARTIN SPROCKET GEAR CHAIN COUPLING # D60B15H BORE: 1-3/4" NEW

 

DODGE SPROCKET GEAR CHAIN COUPLING # FB5016X1 HK BORE: 1" NEW

HIWIN LINEAR RAILS CUT TO LENGTH 4" TO 78" MODEL# MGNR-12-RXXX-H

 

NUMATICS PNEUMATIC CYLINDER #P4AK-04A1D-DAA?2 LINEAR STROKE: 3.5"

 

BIMBA PNEUMATIC LINEAR CYLINDER #M-122-DPY STROKE:2"

 

ENDODER PRODUCTS ABSOLUTE ACCU-CODER THRU- BORE MODULAR

  

PARKER PNEUMATIC LINEAR CYLINDER 2MA SERIES #CJ2MAU14C STROKE: 7"

 

DC GENERATOR 0.5VDC/1K RPM OR 6VDC MOTOR 13,000RPM

POTENTIOMETER LINEAR MOTION 1.5" TRAVEL 46K CENTER TAP

 

PARKER PNEUMATIC LINEAR CYLINDER #4MA SERIES #BB4MAU14AC STROKE: 10"

  

PARKER PNEUMATIC LINEAR CYLINDER #2MA SERIES #J2MABU14 STROKE: 12"

 

TRW HIGH SPEED DC MOTOR 403A159 12VDC 6400RPM (2ea.)

 

PARKER PNEUMATIC LINEAR CYLINDER #2MA SERIES #BB2MAU14A STROKE: 10"

 

MAGNETIC CLUTCH & BRAKE AUTOTRONICS MC-8-8 28VDC

 

PRECISION BELLOWS SHAFT COUPLING BORE: 0.187 X 0.187"

POTENTIOMETER BOURNS 3585S-51-203 20K OHMS 0.5% LIN.

 

BIMBA PNEUMATIC CYLINDER # LT-172-DM LINEAR STROKE: 2.0"

 

SUMITOMO SM-CYCLO SPEED REDUCER CVFJS-6165DCY-1?87 TORQUE 18,600 IN-LBS NEW!

 

MARATHON 5HP AC MOTOR 208-230/460VAC 60HZ. 3475RPM # HVN 184TTFR14012

 

LINEAR STAGE ACTUATOR TABLE 12" TRAVEL SCREW 0.25"

 

WESTINGHOUSE 1.5HP AC MOTOR # 77B646L25 230/460VAC 60HZ. 1725RPM USED

 

POTENTIOMETER HIGH PRECISION 2K BUSHING MOUNT 10 TURN

 

ACE CONTROLS INC. SHOCK ABSORBER #MC4525-0-HT-25?56 MAGNUM SERIES USED

 

GYRO RATE GYROSCOPE MINIATURE 400HZ. 40DEG./SEC.

 

SANYO DANKI FAN PICO ACE 15 #109P0624H715 24VDC 0.06AMP NEW

PARKER PNEUMATIC LINEAR CYLINDER #2MA SERIES #J2MABU14C STROKE: 13.5"

 

TIMKEN TAPERED ROLLER BEARING CONE # L44649 AND CUP # L44610 MATING PAIR

 

MARTIN SPROCKET GEAR CHAIN COUPLING # D60B14H BORE: 1-3/4" NEW

 

STERLING MAGNETIC CLUTCH BRAKE MODEL#T-511-2 24VDC

 

POTENTIOMETER BOURNS 50K OHMS 0.25%LIN. 10 TURNS

 

RELIANCE ELE. AC MOTOR 1HP #P14X4800M 208-230/460VAC 60HZ. 1725RPM NEW

 

PCI IDLER ROLLERS LOAD RUNNER HEAVY DUTY VRTY-3.75" (LOT OF 2 ROLLERS)

 

LINEAR STAGE ACTUATOR TABLE 4" TRAVEL & 0.25" LEADSCREW

 

NORDGREN PNEUMATIC LINEAR CYLINDER #A1233A1 2 X 1-1/2 STROKE: 1.5"

 

POTENTIOMETER PRECISION 200K C.T. CONTINUOUS TURN

 

MARTIN SPROCKET GEAR CHAIN COUPLING # 6018-1-1/8 NEW

 

MECHATRONICS DC BRUSHLESS FAN #A9225H48B 48VDC 0.1A BALL BEARING

 

MAGNETIC SPRING BRAKE DYNAMIC INSTR.# SB-11-2 24VDC

 

POTENTIOMETER BOURNS 500 OHMS 0.5% LIN. 1 TURN

 

MARTIN SPROCKET GEAR CHAIN COUPLING # D80B18H BORE: 2.12" NEW

 

PCI IDLER ROLLERS LOAD RUNNER VRT-1.50" (LOT OF 4 ROLLERS)

 

ALLEN BRADLEY 871A SENSOR CABLE 871A-CRL4N-D2 NEW

 

MARTIN SPROCKET GEAR CHAIN COUPLING # 60BS14-1 BORE: 1" NEW

 

BROWNING COUPLING BORE: 1.250" X 1.250" HEAVY DUTY MOTOR COUPLING # L-100

 

BRONZE BUSHING FLANGED MXL06221 0.500" ID & 0.625" OD ( LOT OF 41 BUSHINGS )

 

PAPST LUFTER FAN BLOWER #RL90-18/24 22-28VDC 7.5WATTS NEW

 

STERLING AC MOTOR 1/2HP # RBY054FCA 208-230/460 VAC 60HZ 1750 RPM

 

MAC VALVE PNUMATIC SOLENOID MODEL# 45A-AA2-DAAA-1C?M 120VAC 120 PSI NEW

 

SYNCHRO CONTROL TRANSFORMER TYPE: 1HCT 90VAC/57.3VAC 60HZ. US NAVY TYPE

 

RELIA MARK FLANGE MOUNTED BEARING 4 BOLTS BORE: 3/4" # UCF20412RM NEW

 

ALLEN BRADLEY INTERFACE I/O CABLE CAT# 2090-U3CC-D4409 SERIES-C NEW

 

BRONZE BUSHING ? ”ID x 5/8”O(jiān)D x 3/4” long ( LOT OF 34 BUSHINGS )

 

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