A16B-0160-0542 / 30B

6MBI150FA-060-01
6ES5-374-1FJ21 

A16B-0160-0542 / 30B

我公司主要經營西門子abb,施耐德等國外多家品牌，產品涉及變頻器，儀器儀表，變送器，可編程控制器plc和人機界面。

電話：15506917382    0591-62182535 

傳真：0591-22989937   QQ：583745937  聯系人：王工

福州卓凱電子科技有限公司

①當電氣設備發生漏電時，出現兩種異常現象：

　　一是，三相電流的平衡遭到破壞，出現零序電流；

　　二是，正常時不帶電的金屬外殼出現對地電壓（正常時，金屬外殼與大地均為零電位）。

　　②零序電流互感器的作用漏電保護器通過電流互感器檢測取得異常訊號，經過中間機構轉換傳遞，使執行機構動作，通過開關裝置斷開電源。電流互感器的結構與變壓器類似，是由兩個互相絕緣繞在同一鐵心上的線圈組成。當一次線圈有剩余電流時，二次線圈就會感應出電流。

　　③漏電保護器工作原理將漏電保護器安裝在線路中，一次線圈與電網的線路相連接，二次線圈與漏電保護器中的脫扣器連接。當用電設備正常運行時，線路中電流呈平衡狀態，互感器中電流矢量之和為零（電流是有方向的矢量，如按流出的方向為“＋”，返回方向為“－”，在互感器中往返的電流大小相等，方向相反，正負相互抵銷）。由于一次線圈中沒有剩余電流，所以不會感應二次線圈，漏電保護器的開關裝置處于閉合狀態運行。當設備外殼發生漏電并有人觸及時，則在故障點產生分流，此漏電電流經人體？大地？工作接地，返回變壓器中性點（并未經電流互感器），致使互感器申流入、流出的電流出現了不平衡（電流矢量之和不為零），一次線圈申產生剩余電流。因此，便會感應二次線圈，當這個電流值達到該漏電保護器限定的動作電流值時，自動開關脫扣，切斷電源。

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A16B-0160-0542 / 30B

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UNIOP eTOP30-0050 eTOP30 SCREEN

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RTE EMA-12/15B Power Supply

Trane X13650455-07 Chiller Stepper CTV Module Rev. K

General Electric DS3800NDAC1E1F Output Board

Tocco 000614 Capacitor 1200 KVAR 800 Vac 1500 Amp -

General Electric 5KCP39DGN572 S Motor

Dadco 90.10.05000.080.TO Nitrogen Gas Spring 901005000080TO -

GE CR174DB P3 E5B Photoelectric Sensor (Pack of 3) -

General Electric 41729 Projection Lamps EPT GE 10.8v 42w (Pack of 36)

Allen Bradley 802PR-LBAK1 Inductive Proximity Photoswitch 802PRLBAK1

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Unico 308228 Encoder Interface Rev. 10 -

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Fanuc A20B-2902-0070/02B Memory Module A20B2902007002B -

Unico 306-566.5 0037 Circuit Board -

ASI Astrosystems HST34-5/1 Encoder Transducer -

Allen Bradley 1771-A3B PLC-5 12 Slot I/O Chassis Rack

Cooper TN224 (1/4) ZN TN22414ZN Channel Nut 1/4" (Pack of 100)

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Mac 82A-LC-000-TM-DAAP-1DA Solenoid Valve 150 psi

GE FANUC IC660TSD100B ANALOG BLOCK, GE FANUC Genius IC660ELD100G

General Electric CR120B12002 GE Industrial Relay

UNIOP ERT-VGA-0045 ERT SCREEN

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