Description
電流繼電器是一種常用的電磁式繼電器，電流繼電器用于電力拖動(dòng)系統(tǒng)的電流保護(hù)和控制。其線圈串聯(lián)接入主電路，用來感測(cè)主電路的線路電流；觸點(diǎn)接于控制電路，為執(zhí)行元件。電流繼電器反映的是電流信號(hào)。常用的電流繼電器有欠電流繼電器和過電流繼電器兩種。 欠電流繼電器（KA）用于電路起欠電流保護(hù)，吸引電流為線圈額定電流30％～65％，釋放電流為額定電流10％～20％，因此，在電路正常工作時(shí)，銜鐵是吸合的，只有當(dāng)電流降低到某一整定值時(shí)，繼電器釋放，控制電路失電，從而控制接觸器及時(shí)分?jǐn)嚯娐贰?過電流繼電器（FA）在電路正常工作時(shí)不動(dòng)作，整定范圍通常為額定電流1.1～4倍，當(dāng)被保護(hù)線路的電流高于額定值，達(dá)到過電流繼電器的整定值時(shí)，銜鐵吸合，觸點(diǎn)機(jī)構(gòu)動(dòng)作，控制電路失電，從而控制接觸器及時(shí)分?jǐn)嚯娐贰?duì)電路起過流保護(hù)作用。 JT4系列交流電磁繼電器適合于交流50Hz，380V及以下的自動(dòng)控制回路中作零電壓、過電壓、過電流和中間繼電器使用，過電流繼電器也適用于60Hz交流電路。 通用電磁式繼電器有：JT3系列直流電磁式和JT4系列交流電磁式繼電器，均為老產(chǎn)品。新產(chǎn)品有：JT9、JTl0、JLl2、JL14、JZ7等系列，其中JLl4系列為交直流電流繼電器，JZ7系列為交流中間繼電器。
Gems Sensor Type 2200 SGH3004A3UA NIB
Flowserve Five Star 1 1/8″ Series 86 Seal Refurbished
Allen Bradley 1756-IB16/A LNC
Square D Sy/Max Class 8030 Type HOM-251 NIB
Square D Sy/Max Class 8030 Type HIM-131 NIB
Square D Sy/Max Sy/Net Network Interface
Boston Gear CMB Brake Cat. CMBA140TR-6 Item 67551 NIB
Yokogawa Transmitter Model YA43F SAS4
Allen Bradley 1492-JKD3 Box of 50 NIB
Allen Bradley 1746-OV8 Ser.A NIB
Asco Red Hat Cat. No. EF8342C20 1/4″
Signal Division Model 3H Air Horn NI
Nordson Main Frame Board Model 296025C NIB
Colonial Engineering Full Block True Union Ball Valve 2
Siemens Mill Duty Enclosured Switch 60 Amp.
Allen Bradley 800T-PT16A NIB
Allen Bradley Relay 700-PK400A1 NIB
Hyett Instrument Seal Diaphragm Type 25F Code 7902 1/alluff Proximity Switch Model BES 516-357-B0-C-0
G W Eagle Signal Time/Counter Model CT5304A6
Comair Rotron Model CL2T2 NIB
Pall Filter PN P-24-10-6M050 Stainless Steel NIB
Siko Impluse Transmitter PN IG07 1183 ABO118-PP NNB
Alen Bradley 42 GTU-9200-QD
3- Allen Bradley 42 GRU-9000-QD Clean units
Allen Bradley 1492-IFM20F-2 NIB
Flowserve Carbon Insert 2″ PN Y5FJ2000L33 NIB
Allen Bradley PowerFlex 20-HIM-B1 A NIB
Chemtrol 2″ Ball valver 150 PSI Type U45TB-U NIB
Asco Red Hat Cat. No.8314G8 NIB
Flowserve Five Star 1 1/8″ Series 86 Seal Refurbished
Allen Bradley 1756-IB16/A LNC
Square D Sy/Max Class 8030 Type HOM-251 NIB
Square D Sy/Max Class 8030 Type HIM-131 NIB
Square D Sy/Max Sy/Net Network Interface
Boston Gear CMB Brake Cat. CMBA140TR-6 Item 67551 NIB
Yokogawa Transmitter Model YA43F SAS4
Allen Bradley 1492-JKD3 Box of 50 NIB
Allen Bradley 1746-OV8 Ser.A NIB
Asco Red Hat Cat. No. EF8342C20 1/4″
Signal Division Model 3H Air Horn NI
Nordson Main Frame Board Model 296025C NIB
Colonial Engineering Full Block True Union Ball Valve 2
Siemens Mill Duty Enclosured Switch 60 Amp.
Allen Bradley 800T-PT16A NIB
Allen Bradley Relay 700-PK400A1 NIB
Hyett Instrument Seal Diaphragm Type 25F Code 7902 1/alluff Proximity Switch Model BES 516-357-B0-C-0
G W Eagle Signal Time/Counter Model CT5304A6
Comair Rotron Model CL2T2 NIB
Pall Filter PN P-24-10-6M050 Stainless Steel NIB
Siko Impluse Transmitter PN IG07 1183 ABO118-PP NNB
Alen Bradley 42 GTU-9200-QD
3- Allen Bradley 42 GRU-9000-QD Clean units
Allen Bradley 1492-IFM20F-2 NIB
Flowserve Carbon Insert 2″ PN Y5FJ2000L33 NIB
Allen Bradley PowerFlex 20-HIM-B1 A NIB
Chemtrol 2″ Ball valver 150 PSI Type U45TB-U NIB
Asco Red Hat Cat. No.8314G8 NIB
