IC697MDL253

变频器本身消耗的功率有多少？ 它与变频器的机种、运行状态、使用频率等有关，但要回答很困难。不过在60Hz以下的变频器效率大约为94%~96%，据此可推算损耗，但内藏再生制动式（FR-K）变频器，如果把制动时的损耗也考虑进去，功率消耗将变大，对于操作盘设计等注意。 为什么不能在6~60Hz全区域连续运转使用？ 一般电机利用装在轴上的外扇或转子端环上的叶片进行冷却，若速度降低则冷却效果下降，因而不能承受与高速运转相同的发热，降低在低速下的负载转矩，或采用容量大的变频器与电机组合，或采用电机。使用带制动器的电机时应注意什么？ 制动器励磁回路电源应取自变频器的输入侧。如果变频器正在输出功率时制动器动作，将造成过电流切断。所以要在变频器停止输出后再使制动器动作。

BINDICATOR RF9C4X1A RADIO FREQUENCY POINT LEVEL 120V-AC SENSOR B378334

FOX INDUSTRIES 10A-30-REM 0229 250/30V-AC/DC SENSOR B356280

FOXBORO PR-13UBS-003 PLATINUM RTD 2-1/2IN STAINLESS TEMPERATURE PROBE B399448

NORDSON 207878 VERSABLUE PRESSURE 100BAR 12/40V PROBE SENSOR B315350

ABB TBX557J1E1100T0?90 INSERTION PH/ORP SENSOR D390144

YOKOGAWA ZR22G 100-SC-E-T-T-E-?A/ZA/ ZIRCONIA OXYGEN PROBE SENSOR D517207

CHROMALOX 307-0722-09-005 100OHM TEMPERATURE PROBE SENSOR D477048

GLI GREAT LAKES 6050PO LEVEL SENSOR ASSEMBLY D480445

ROSEMOUNT 79 CONNECTION HEAD W/ 12IN TEMPERATURE PROBE D512448

ROSEMOUNT 225 11186-03 PUR-SENSE PT100 SANITARY TOROIDAL SENSOR D446770

TBI TB46511020002 BAILEY CONTROLS STAINLESS CONDUCTIVITY SENSOR D402892

ROSEMOUNT 68R21N00A120T22 MODEL 79 HEAD & ROD STAINLESS 12 IN PROBE D295763

GREAT LAKES 387-559A PROBE SENSOR ASSEMBLY D479157

MAGNETROL 80-8032-302 LEVEL SENSOR PROBE 120V-AC 12-5/8IN D238244

DYNALCO M334 MAGNETIC SPEED 60-90V-DC PICK UP TEMPERATURE SENSOR B492848

MOR ELECTRIC HEATING JRS1-F3B180-3 THERMOCOUPLE J TEMPERATURE SENSOR B410513

HONEYWELL LP914A-1144-5 25-125F -5-55C 24V-DC TEMPERATURE PROBE SENSOR B468383

ABB TB557J2EB1F10 BAILEY METER 100/40PSI 80/140C ORP INSERTION PH SENSOR B486426

GIC THERMODYNAMICS DWG 67-0328-D1 33-1/2IN LENGTH TEMP PROBE SENSOR D508920

ROSEMOUNT 3000-E 3D39440G02 3FT OXYGEN GAS SENSO

DAMETRIC TDC-IZGT METSO REFINER GAP SENSOR B413533

EVEREST INTERSCIENCE 4000.4GL -40-100C SURFACE TEMPERATURE SENSOR D502545

THERMO 494-61093-A-4B-?120-4P138 4 IN PROBE SENSOR D434058

MARCO SENSOR GHSA 750-500 LINEAR POSITION SENSOR D387307

CONAX 7825-11000-01 TEMPERATURE SENSOR D452909

CONAX 7825-11000-02 TEMPERATURE SENSOR D452912

ROSEMOUNT 140-54 0.2 G92 11179-00F CONDUCTIVITY SENSOR B344837

GENELCO 12-511A LEVELITE POLYPROPYLENE LEVEL PROBE SENSOR D482035

WIKA 55144128 ENCLOSURE THERMOCOUPLE RTD 5 IN STAINLESS PROBE B431274

LOREME AI510-005 AXCUVE0715 PT100 TEMPERATURE PROBE SENSOR D221684

OPTECH SENTINEL 3100 LONG RANGE LASER BASED LEVEL MONITOR 1-1/2A 24V-DC B313867

SENSIDYNE SP5 SENSALERT PLUS SENSOR INTERFACE GAS DETECTOR SENSOR D307262

 

ROSEMOUNT EMERSON 0068T21N00A015T?32C4 THERMOCOUPLE TEMPERATURE SENSOR B328130

DREXELBROOK 700-202-2 LEVEL SENSOR ELEMENT D257720

FCI 12-64B-C1B1 FLUID COMPONET FLOW SWITCH MONITOR 115V-AC SENSOR B385310

HONEYWELL LP914A-1144-4 INSERTION TEMPERATURE DUCT 25-125F PROBE SENSOR B467466

BINDICATOR LVP100200/110V LEVEL CONTROL SWITCH 110V-AC SENSOR B282998

DAMETRIC TDC-IZGT METSO VAL0123063 REFINER GAP SENSOR B413183

IEC EM SERIES FINE PARTICLE FLOW PROBE SENSOR D497593

GOULD 302H0300 GSM-2 GROUND SHIELD CURRENT SENSOR B342733

BINDICATOR SA-1 ROTO GUARD MOTION INDICATOR 2HP 20A AMP 480V-AC SENSOR B363826

ENDRESS HAUSER P-CL-1F-L-B PROSONIC FLOW P DN100-DN4000 FLOW SENSOR B420865

TR ELECTRONIC 314-00009 LA-80 PLASTIC CASING 150MM LINEAR SENSOR B345697

GOULD 302H0300 GSM-2 GROUND SHIELD CURRENT SENSOR B342738

FOX INDUSTRIES 10A-12-180 0210 250/30V-AC/DC SENSOR B356224

PARAMOUNT SUPPLY KK48U-018-00-8H?N31 18IN THERMOCOUPLE SENSOR B354231

ABB TB55112300F05 INSERTION ORP 3K TC 100PSI PH SENSOR B407376

GEMS XM-54852-72-100?0 66433 30V-DC LEVEL SENSOR D490995

ENDRESS HAUSER DC 11TAN-AA13C1BKR?1 MULTICAP T 47IN LEVEL PROBE SENSOR D498505

GASTECH 73-1424-02 SAFETNET GAS MONITOR SULFUR DIOXIDE PPM DETECTOR B344607

ENDRESS HAUSER DC 11TAN-AA13C1BKR?1 MULTICAP T 27IN LEVEL PROBE SENSOR D498510

ROSEMOUNT 0183P21K2CT0J12?0T TEMPERATURE 38IN PROBE SENSOR D498508

INSTRUMENT TRANSFORMER GFM 156 3.8-18A AMPERES GROUND FAULT SENSOR D476593

DREXELBROOK 406-6002-F01 LEVEL SENSOR D493312

ROSEMOUNT 228-02-20-54-62 PT100 INSERTION TOROIDAL CONDUCTIVITY SENSOR B455924

NET SAFETY MONITORING MLP-A-SC1100-SE?P-SS COMBUSTIBLE GAS DETECTOR B489746

DREXELBROOK 700-0202-002 SENSOR ELEMENT THERMOCOUPLE 12 IN LEVEL PROBE B414993

ENDRESS HAUSER DC 11TAS-AM13C1BKR?1 MULTICAP T 80IN LEVEL PROBE SENSOR D498784

NET SAFETY MONITORING MLP-A-SC1100-SE?P-SS COMBUSTIBLE GAS DETECTOR B490150

MTS 011044070321500?1 TEMPOSONICS 44IN STROKE LDT POSITION SENSOR D308351

LESLIE CONTROLS COPPER REGULATOR TEMPERATURE 20IN 170-270DEG F PROBE D299345

ROSEMOUNT 23555-00 REMOTE JUNCTION BOX PRE-AMP PH/ORP PROBE 13.4V SENSOR B267409