(1)錯(cuò)拉隔離開關(guān)時(shí)，刀閘剛離開靜觸頭便發(fā)生電弧，這時(shí)立即合上，就可以消弧，避免事故，若刀閘已全部拉開，則不許將誤拉的刀閘再合上;

廈門岳航計(jì)算機(jī)工程有限公司

聯(lián)系人：李素云

企業(yè)QQ：2851195446，2851195466

手機(jī)：18965423501

座機(jī)：0592-5165501

(2)錯(cuò)拉隔離開關(guān)時(shí)，即使合錯(cuò)，甚至在合閘時(shí)發(fā)生電弧，也不準(zhǔn)再拉開，因?yàn)閹ж?fù)荷刀閘會(huì)造成三相弧光短路。

5、什么叫RLC并聯(lián)諧振?

電阻、電感和電容相并聯(lián)的電路，在一定頻率的正弦電源作用下，出現(xiàn)電路端電壓和總電流同相，整個(gè)電路呈阻性的特殊狀態(tài)，這個(gè)狀態(tài)叫并聯(lián)諧振。

6、距離保護(hù)的起動(dòng)元件采用負(fù)序、零序增量元件有何有點(diǎn)?

(1)靈敏度高;

(2)可見(jiàn)做振蕩閉鎖裝置的起動(dòng)元件;

(3)在電壓二次回路斷線時(shí)不會(huì)誤動(dòng);

(4)對(duì)稱分量的出現(xiàn)于故障的相別無(wú)關(guān)，故起動(dòng)元件可采用單個(gè)繼電器，因此比較簡(jiǎn)單。

New Endress Hauser 80F08AAASAAACBBA8 Flow Meter Sensor 3/8"

Used Endress & Hauser Micro Pilot II Tank Level Sensor FMR-231A-REAEK1A4A 230PSI

New RGB Sensor CZ-V21 24VDC CLASS 2

New Sensor Controller 19146

New Wika Surface RTD Sensor 320-R0CKP-04A-B0TE-03A1B 320R0CKP04AB0TE03A1B

New Siemens Electronic Relative Humidity Duct Sensor 538-893

New Telemecanique Photoelectric Sensor XUL M0631 063273 XULM0631

Used Micro Motion Mass Flow Sensor 150S-SS Tube-1500 PSI Conn.-230 PSI 150SSS

New Keyence Amplifier Photoelectric Sensors PZ-61L

Used Omron Vertical Photoelectric Switch E35-R2E41 12-24VDC 2M Sensing Distance

New Banner Mini Beam Namur Sensor 34625 MIAD9DQ Range: 380mm, 5-15 VDC Input

New Applied Robotics Quickstop Base Collision Sensor QS-100-NPMP XEC124097 QSC-M

New IFM Efector Sensor I95009 10-30 VDC 3000 PSI 26mm Probe

New ENTRELEC SSAC LPMG12 SENSORS Set of 4 3601

New Keyence Photoelectric Sensors PZ Series DF65089249 90613

Used Micro Motion Mass Flow Sensor DS150S151R 1500 PSIG Meter Type 6 940728

Rebuilt Micro Motion Mass Flow Sensor D 40S-SS DN15 PN40 D40S-SS-BV220-AF .40"

403A-P S403A-PB

3BSE032401R1 PU515A

IQ500L/A

DSRC113 52820083-LF

CI531 3BSE003825R1

DSQC626A 3HAC026289-001

DSQC500 3HAC3626-1

SNAT617 CHC

SNAT632 PAC

SNAT633 PAC

F6217

F7216

F3322

125680-1

3300/20-05-03-01-00-00

3500/22M

3500/45

1768-L43S

VIPA 317-2AJ12 CPU 317SE/DPM-SPEED7

EDWARDS D37232000

New Efector 100 Inductive Sensor IFC211 IFK3003-BPKG/M/US-104-DPS

New Banner LED Scanner SM512LB Red: +10 To +30 VDC

New Basys Controls Temperature Sensor Model: TS1009 Type: 1000 OHM RTD Lot of 2

New SMC Cylinder CDQ2B20-15DC-J79WL-X105US 145PSI 1.0MPa DJ79W 20mm Bore

New Keyence PZ-101 PZ Series Photoelectric Sensor

New King Engineering Liquid Level Sensor Liquiseal 735-4918-38