IC697MDL340

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。

MSA 480525 OXYGEN GAS MONITOR RANGE 0-25% EXPLOSION PROOF SENSOR B320423

BENTLY NEVADA 21504-030-060-0?5-02 7200 PROXIMITOR PROBE SENSOR B492519

TR ELECTRONIC LA-80 PLASTIC CASING LINEAR LEVEL 150MM 24V-DC SENSOR B299149

ACTION INSTRUMENTS E321-006N 0-130F DETECTOR TEMPERATURE PROBE SENSOR B479032

LEEDS NORTHRUP 4973-01-305-7-0?00 CONDUCTIVITY CELL TEMP COMPENSATOR D391861

GENERAL MONITORS DT 220 FLAME GAS DETECTOR DISPLAY LEVELS 24V-DC SENSOR B332511

ABB TB55731600F05 INSERTION PH/ORP SENSOR D390148

ROSEMOUNT 140-56 TEMPERATURE 302F PROBE 791KPA 100PSI SENSOR B343274

MEADWESTVACO ROOM SENTRY LCD DISPLAY CORROSION CONTROL 24V-AC SENSOR B402001

FIKE E02-0008 PRESSURE DETECTOR EXPLOSION PROTECTION 2.5-45IN WC SENSOR B226363

AMETEK 700-0207-001 THEPOINT LEVEL SWITCH FLUSH SENSING ELEMENT SENSOR B396917

BENTLY NEVADA 24701-28-05-00-?045-03-02 HOUSING TEMPERATURE PROBE SENSOR D492889

APG DCU-1611 DCU-1100 AUTOMATION ULTRASONIC 50FT 125154 LEVEL SENSOR B489544

NET SAFETY MONITORING MLP-A-SC1100-SE?P-SS MILLENIUM DETECTOR GAS SENSOR B492017

ROSEMOUNT 260 6630D63G11 SENSOR STAINLESS 29-1/2IN PROBE D274823

ROSEMOUNT 218 6630D10G22 STAINLESS 32 IN PROBE D274826

ROSEMOUNT 3000-E 3D39440G02 3FT OXYGEN GAS SENSOR D419893

BINDICATOR RF92C2X1A RADIO FREQUENCY LEVEL INDICATOR 120V-AC SENSOR D506744

ROSEMOUNT ANALYTICAL 140-54 302F PT100 100PSI 791KPA CONDUCTIVITY SENSOR B333194

ROSEMOUNT ANALYTICAL 0140-54 302F RTD PT100 100PSI CONDUCTIVITY SENSOR B333191

ROSEMOUNT 141-04-13-54 302F 250PSI PRESSURE SENSOR B331710

Newly listedROSEMOUNT 260 6630D63G11 STAINLESS 35 IN PROBE D274831

MSA 815428 COMBUSTIBLE GAS ULTIMA GAS MONITOR DISPLAY 7-30V-DC SENSOR B218338

SIEMENS 7ML55023ZW100DA?0-2 MILTRONICS POINTEK CLS200 LEVEL SENSOR D434794

BAMBECK 0200 OXYGEN ANALYZER 115V-AC PROBE SENSOR D515961

SIEMENS CLS200 7ML55020XK100AA?0 POINTEK 12-250V-AC LEVEL PROBE SENSOR D501290

ROSEMOUNT ANALYTICAL 140-54 302F PT100 100PSI 791KPA CONDUCTIVITY SENSOR B333196

ROSEMOUNT 140-54 302F PT100 100PSI 791KPA ANALYTICAL CONDUCTIVITY SENSOR B333199

ROSEMOUNT 140-54 302F RTD PT100 100PSI ANALYTICAL CONDUCTIVITY SENSOR B333190

ROSEMOUNT ANALYTICAL 0140-54 302F RTD PT100 100PSI CONDUCTIVITY SENSOR B333186