光纤耦合器P0926MX

光纤耦合器P0926MX

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然而由于大多数电厂的DCS系统都侧重于汽机锅炉，完成机组基本的运行、控制等功能 ，对电气系统的运行监1控考虑较少，电气系统的要求在DCS系统的工程设计中往往难于考虑。因此上述方式存在着较明显的缺点：

①占用DCS大量的I/O点，卡件多，投资大;

②DCS中反映电气的保护、测量、开关位置及其他需检测的信息不完整;

③不能实现远方遥控、保护信号复归;

④模拟量采用直流采样、使用电量变送器，对一次设备要求高、投资大、抗干扰能力差;

⑤电气二次接线复杂、耗费大量电缆，施工及检修工作量大;

⑥所有信息集中在DCS的DAS系统，系统承担的风险相对较大;

⑦无法完成较多较复杂的电气运行管理工作，如电气运行检修人员关心的电能管理、 保护整定、事故追忆等信息。

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DETROIT DIESEL 23530707 POWER GUARD SECONDARY FUEL FILTER D593845

COMPRESSION SPRING 153MM LENGTH 48MM OD 7MM WIRE DIA D519755

NIBCO PC600-2 PROSSYSTEM FITTING REDUCER COUPLING LD 1-1/2IN X 3/4IN D589176

FILTER MART 25-0310 OEM OIL FILTER D563124

GENUINE EUREKA 52318A DISPOSABLE C STYLE DUST BAGS D525797

HONEYWELL 11SM1-T MICRO SWITCH 5A 250V-AC SUB-MINI SWITCH D545760

ALLEN BRADLEY 700-HB33A1 11-PIN RELAY SER A 120V-AC D578574

LOGITECH M-S30 PS/2 D566427

NATIONAL ELECTRIC 6AF6G VACUUM TUBE D545482

CROUSE HINDS LR297 1-1/4 IN NPT IRON CONDUIT FITTING D546433

THOMAS&BETTS 615-TB 2IN TO 1-1/2IN THREADED REDUCER FITTING D521018

STC G55/1K VOLTAGE REGULATOR VACUUM TUBE D545349

REDAPT DP-E BREATHER DRAIN 1/2 IN NPT D544975

THOMAS&BETTS 1281 2IN IRON PIPE STRAP D520937

GOULD TRS60R TRI-ONIC 60 AMP 600VAC TIME DELAY FUSE D562915

THOMAS&BETTS 613 2IN TO 1IN THREADED REDUCER FITTING D520938

FOSSIL POWER SYSTEMS 9040-9100 2.9-4IN SPARK PLUG D562875

SWAGELOK SS-QF12-S-12PM STAINLESS STEM W/O VALVE 3/4 IN NPT D537519

NIBCO PC600-2 PRESSYSTEM 2IN X 3/4IN FTG REDUCING COUPLING D589159

DIXON P4M8 STEEL 1IN NPT THOR INTERCHANGE NIPPLE D592966

DIXON 4PF6 STEEL 3/4IN NPT THOR INTERCHANGE COUPLER D592975

AMETEK USG 163148 P500K PRESSURE GAUGE 0-300PSI 2IN 1/4IN NPT D585692

CCL CANADIAN CONTROLLERS LIMITED S4.4 OVERLOAD HEATER ELEMENT D521045

SYLVANIA S3.7 OVERLOAD HEATER ELEMENT D521043

SYLVANIA S5.3 OVERLOAD HEATER ELEMENT D521042

SQUARE D 9999EU12 ELECTRIC INTERLOCK ASSEMBLY D521078

NORGREN 4557500 NON-RELIEIVING REGULATOR D537567

ASCO 102-845 RED-HAT SPARE PARTS KIT D537691

SQUARE D ASSORTED AR3.62 AR5.8 OVERLOAD RELAY THERMAL UNIT D520873

SQUARE D B14.0 OVERLOAD RELAY HEATER ELEMENT D520865

VIEGA PRESSYSTEM 2IN X 3/4IN REDUCER COUPLING D589267

GE ASSORTED 81D231 81D541 81D588 81D590 OVERLOAD RELAY HEATER D520874

TB WOODS ASSORTED SD112 SD158 SURE-GRIP BUSHING D525610

NIBCO PRESSYSTEM 3/4IN X 3/4IN PRESS COPPER FITTING D589274

ELATECH 660T10 ISYNC TIMING BELT 660X31MM 10MM PITCH D552116