140N0E77101 SCHNEIDER

EK-965 GIDDINGS & LEWIS M221L SHEFFIELD MEASURMENT LOT

EK-153 GIDDINGS & LEWIS SHEFFIELD MEASUREMENT LOT OF 2

GIDDINGS & LEWIS OUTPUT 24VDC SOURCE 503-25908-01 R1

GIDDINGS & LEWIS 502-02824-00 PC BOARD/1 YEAR WARRANTY

GIDDINGS & LEWIS 502-02868-00 PC BOARD/1 YEAR WARRANTY

GIDDINGS & LEWIS 502-02869-20 NSPP 5020286920

Giddings & Lewis RS232 Interface 502-02833-20 -DI-

GIDDINGS & LEWIS 502-03214-00 NSPP 5020321400

Giddings&Lewis 502-02080-00 DECADE Counter – Used

Giddings & Lewis PICO / PiC0 CPU w/ 5 Slot Rack **LNC**
Expedited shipping available

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Description

接触器的选用

选择接触器时应注意以下几点。

(1)接触器主触头的额定电压负载额定电压。

(2)接触器主触头的额定电流≥1.3倍负载额定电流。

(3)接触器线圈额定电压。当线路简单、使用电器较少时,可选用220V380V;当线路复杂、使用电器较多或不太安全的场所,可选用36V110V127V

(4)接触器的触头数量、种类应满足控制线路要求。

(5)操作频率(每小时触头通断次数)。当通断电流较大及通断频率超过规定数值时,应选用额定电流大一级的接触器型号。否则会使触头严重发热,甚至熔焊在一起,造成电动机等负载缺相运行。

EK-965 GIDDINGS & LEWIS M221L SHEFFIELD MEASURMENT LOT

EK-153 GIDDINGS & LEWIS SHEFFIELD MEASUREMENT LOT OF 2

GIDDINGS & LEWIS OUTPUT 24VDC SOURCE 503-25908-01 R1

GIDDINGS & LEWIS 502-02824-00 PC BOARD/1 YEAR WARRANTY

GIDDINGS & LEWIS 502-02868-00 PC BOARD/1 YEAR WARRANTY

GIDDINGS & LEWIS 502-02869-20 NSPP 5020286920

Giddings & Lewis RS232 Interface 502-02833-20 -DI-

GIDDINGS & LEWIS 502-03214-00 NSPP 5020321400

Giddings&Lewis 502-02080-00 DECADE Counter – Used

Giddings & Lewis PICO / PiC0 CPU w/ 5 Slot Rack **LNC**
Expedited shipping available