FMT651

FMT651     

FMT651     

變頻調(diào)速器（簡稱變頻器）按其作用可理解為改變電動(dòng)機(jī)電源頻率值及電壓值的自動(dòng)化裝置，它一般具有免維護(hù)、控制精度高，并可以實(shí)現(xiàn)高功能化等特點(diǎn)；因而采用變頻器驅(qū)動(dòng)的方案開始逐步取代風(fēng)門、擋板、閥門的控制方案。
　　現(xiàn)今發(fā)展起來的變頻器一般主要有由電力電子器件（IGBT模塊）、電子器件（集成電路、開關(guān)電源、電阻、電容）、微處理器（CPU）等組成，目前，變頻器大部分是基于采用交－直－交電源變換技術(shù)，電力電子、微電腦控制等技術(shù)于一身的綜合性電氣產(chǎn)品。

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或者張可可

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JOHNSON CONTROLS VTM-TN019-314 V-3000-1 250 BRASS 1/2 I

JOHNSON CONTROLS V47AS-1 115-160F 2IN NPT TEMPERATURE G

UNI-GERATE 20-EVA 5 N-3EP DN 15 ELECTRIC PN40 STAINLESS

UNI-GERATE 25-EVSDU-5-NEP DN15 230V ELECTRIC PN40 STAIN

NEW CRANE 212P 1 IN NPT BRONZE THREADED GLOBE VALVE D45

NEW CASHCO 2 MRV CS/SST 2IN PNEUMATIC 300 STEEL FLANGED

NEW HENRY VOGT 15141 2IN STEEL SOCKET WELD GLOBE VALVE 

KITZ 141SS 4 IN 300 STAINLESS FLANGED GLOBE VALVE D4437

NEW ROCKWELL-EDWARD F3627 UNIVALVE 1/2 IN STEEL GLOBE V

BAUMANN 32-24588 1 IN NPT PNEUMATIC 250 THREADED GLOBE 

JENKINS 8G80 FORGED 2 IN NPT 800 STEEL THREADED GLOBE V

NEW CONVAL 12G2J-F225E-STK?4 3/4IN STEEL SOCKET WELD GLO

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NEW PACIFIC 160-1 3 IN 150 STEEL FLANGED GLOBE VALVE D4

NEW JOHNSON CONTROLS V47AC-6 TEMPERATURE GLOBE VALVE BR

NEW FLOWSERVE 1048 1/4 IN NPT IRON THREADED BOLTED BONN

NEW CONVAL 10G2J-1056H-519?9 1-1/2 IN STEEL SOCKET WELD 

HONEYWELL V5011N2089 PNEUMATIC ACTUATOR THREADED 1-1/2I

HONEYWELL V5011N2071 MP953C 1018 ACTUATOR BRASS 1-1/4IN

NEW NIBCO T-276-AP BRONZE THREADED 1/2IN NPT GLOBE VALV

METAFLOW J41H-40C SIZE 100 4 IN STEEL FLANGED GLOBE VAL

SPIRAX SARCO KE43 PNEUMATIC STEEL FLANGED 2-1/2 IN GLOB

HONEYWELL MP953D 1131 3 V5011N1024 1/2 IN NPT BRONZE GL

NEW EDWARD VALVE 944 3600WOG 1/4 IN SOCKET WELD STEEL G

HONEYWELL 4-11PSI 29PSI BRASS PNEUMATIC 1/2IN MP953C102

NEW STOCKHAM B-62 200 THREADED BRONZE 2IN NPT GLOBE VAL

NEW ROCKWELL-EDWARD 848Y 3/8IN IRON GLOBE VALVE D408748

NEW JENKINS 1200 SOLDER ENDS RISING STEM 300 BRONZE 3/4

NEW INVENSYS VB-7253-000-4-1?0 250PSI 1-1/2IN NPT 2-WAY 

HONEYWELL V5011N2071 MP953D 1107 ACTUATOR BRASS 1-1/4 I

POWERS CD-250NCW08050 125 IRON FLANGED 2-1/2IN GLOBE VA

HONEYWELL V5011N2071 MP953D? ACTUATOR BRASS 1-1/4 IN NP