6ES7921-3AM20-0AA0 嵌入式系统

6es7921-3am20-0aa0 嵌入式系统

电话线、网络线、有线电视线及音响线称之为弱电线。随着家庭生活的智能化，弱电线路的预设不容忽视。家庭装修中，电话线、网络线、有线电视线的布设需注意以下几点：

   1.避开强电线：弱电信号属低压电信号，抗干扰性能较差，所以弱电线地走线应该避开强电线（电源线）。国家标准规定，电源线及插座与电视线及插座的水平间距不应小于50厘米。

   2.注意防潮：插座下边线以距地面30厘米左右为宜。一般来说，这些弱电线常常在房顶或地板下布线，所以为了防潮和更换方便，这些线的外面都要加上牢固的套管，并在加上套管前检查线是否有断路或短路。

   3.预留足够插孔：考虑到家庭生活的发展和需要，一般客厅、每个卧室都要预留埋设电话线、网络线、有线电视线插孔各1~2个，并且要分布在不同墙面，以便于电器摆设位置的变化。卫生间、厨房也可根据需要考虑是否预留一个电话插孔，餐厅也可考虑是否预留一个预先电视线插孔，以备就餐时看电视用。

   4.集中控制：随着网络和信息时代的到来，一个家庭安装两部电话或多机上网，以是很平常的事。为保证线的对接质量，且方便维修，好为家中的电话线和网络线设计一个集中控制单元。可以根据网络线进室的位置选择门厅、过道、书房上方等某个地方，设计一个小线盒（形状如电源分线盒），将所有外部进户的电话线、网络线、有线电视线线到达这个线盒，同时家中每个房间的电话插孔、网络插孔、有线电视插孔的线也到达这个线盒，可以根据家庭需要在线盒内进行连线。为保证信号质量需要在线盒内加一个电视信号多路分支适配器，如果家中多台计算机上网，还需备一个网络集线器。

general electric tpss8625g 600v 2500a insulated case circuitbreaker

general electric tpss7625dg 2500 amp power break circuit breakertpss7625 2500a

general electric tpss7625b 600v 2500a insulated case circuitbreaker

general electric tpss5616db 600v 1600a versa trip insulated casecircuit breaker

general electric tpss5616 600v 1600a versa trip insulated casecircuit breaker

general electric tpss44612g   tpss44612g

general electric tps253f 2500a, 100kaic, reconditioned

general electric tps202f 600v 2000a 2p insulated case circuitbreaker

general electric tprr8630nfce1 600v 3000a ss trip insulated casecircuit breaker

general electric tpr7120s10nswm   tpr7120s10nswm

general electric tpmmf76   tpmmf76

general electric tpmm7625b 600 v 2500 a magnetrip insulated casecircuit breaker

general electric tpme277y10asnc   tpme277y10asnc

general electric tphe277y15sg   tphe277y15sg

general electric tp88ss 600 v 800 amp insulated case circuitbreaker

general electric tp3030tte1cr power break **

general electric tp3030ss power break **

general electric tp2020ss 2000 amp

general electric tp1616ttr 600 v 1600 amp mvt l/i insulated casecircuit breaker

general electric tp1616ttr 1600amp

general electric tp1616ssh 600 v 1600 amp rms-9 insulated casecircuit breaker

general electric tp1616ss circuit breaker **

general electric tp1616ss 1600 amp 1 year warranty

general electric tp1616s 1600 amp

general electric tov4023m030h00c   tov4023m030h00c

general electric tov relay tov5013b210h00c

general electric tmpr12322r     tmpr12322r

general electric tmp3fb4r     tmp3fb4r

general electric tmm2212r    tmm2212r

general electric tmm2212r     tmm2212r

general electric tmjk436f000mod.5  tmjk436f000mod5

general electric tme277y065wm    tme277y065wm

general electric tme120y100wmn12f   tme120y100wmn12f

general electric tme120y100nswm    tme120y100nswm

general electric tme120y065wm    tme120y065wm

general electric tme120y065as   tme120y065as

general electric tm42422unl 225 amps panel load center breakerswitch$899

general electric tm1g02   tm1g02

general electric tm1g02 power leader meter monitor tm1 g02120vac ge industrial

general electric tm1g02 power leader meter monitor tm1 g02120vac ge

general electric tlb434400 circuit breaker 3-pole 400a

general electric tlb434400 circuit breaker - reconditioned

general electric tlb434400 -

general electric tlb434300   tlb434300

general electric tlb434300 circuit breaker - reconditioned

general electric tlb434250 circuit breaker - reconditioned

general electric tlb234225 molded case circuit breaker **

general electric tlb234200 circuit breaker 200 amps 480vac 3pole

general electric tlb234150 circuit breaker - reconditioned

general electric tkmasta13r     tkmasta13r

general electric tkma836t700   tkma836t700

general electric tkma836t700    tkma836t700

general electric tkma836t450 circuit breaker *sealed*

general electric tkma836t400    tkma836t400

general electric tkma836t300 trip unit **

general electric tkma836t300 trip unit **

general electric tkma836800 circuit breaker - reconditioned

general electric tkma836700 circuit breaker - reconditioned

general electric tkma826800 circuit breaker - reconditioned

general electric tkma3t1200   tkma3t1200

general electric tkma3t1000   tkma3t1000

general electric tkma31200 circuit breaker - reconditioned

general electric tkma31200 1200 amp 600 volt 3 pole circuitbreaker --ses

general electric tkma31000 circuit breaker - reconditioned

general electric tkma30800wl     tkma30800wl

general electric tkm836tc5300 **

general electric tkm836t600   tkm836t600

general electric tkm836t300   tkm836t300

general electric tkm836f000 circuit breaker - reconditioned

general electric tkm836800   tkm836800

general electric tkm836700   tkm836700

general electric tkm836400   tkm836400

general electric tkm8361200   tkm8361200

general electric tkm8361000   tkm8361000

general electric tkm436-800   tkm436800

general electric tkm3f circuit breaker - reconditioned

general electric tkm1361000 circuit breaker - reconditioned

general electric tkl8s 800 amp 600v 3 pole with rms-9 versa-tripts20lst1

general electric tkl8s 800 amp 600v 3 pole lsig functionsts20lsigt2

general electric tkl4v4612 circuit breaker - reconditioned

general electric tkl4v4610 1000 amp 3 pole 600 v with shunt withinstantenous

general electric tkl12s circuit breaker - reconditioned

general electric tkh8s   tkh8s

general electric tkc36800l circuit breaker 3pole 800a 600v ! wow!

general electric tkc36800   tkc36800

general electric tkc361200l circuit breaker 1200a 3pole 600v !wow !

general electric tk83pd1a     tk83pd1a

general electric tk4vf46 circuit breaker - reconditioned

general electric tk4v4612   tk4v4612

general electric tk4v4612 circuit breaker - reconditioned

general electric tk4v4610 microversatrip 1000 amp circuitbreaker

general electric tk4v4610 circuit breaker - reconditioned

general electric tk4v2605 500 amp 600 v industrial circuitbreaker

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general electric tjl6s 600 amp 600 v 3 pole lsig functionsts20lsigt2

general electric tjl4v2605 circuit breaker 500a, 600vac,3pole

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general electric tjl4v2603 300 amp circuit breaker t4vt tripnever electrified

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general electric tjl4v2601   tjl4v2601

general electric tjl4s 600 vac 400 a 3 pole circuit breaker

general electric tjl436400   tjl436400

general electric tjksta13l     tjksta13l

general electric tjkmoma9 circuit breaker *in a *

general electric tjkmoma1   tjkmoma1

general electric tjk636f000     tjk636f000

general electric tjk636f000 600a 3p 600v circuit breaker framew/ aux. switch

general electric tjk636600wl   tjk636600wl

general electric tjk636600 circuit breaker - reconditioned

general electric tjk636600 125 amp 600 volt 3 pole circuitbreaker --ses

general electric tjk636500wl-s-s   tjk636500wlss

general electric tjk636500wl   tjk636500wl

general electric tjk636500 circuit breaker - reconditioned

general electric tjk636450   tjk636450

general electric tjk636450 circuit breaker - reconditioned

general electric tjk636300wl-s-s   tjk636300wlss

general electric tjk-636300     tjk636300

general electric tjk626600 circuit breaker - reconditioned

general electric tjk626450 circuit breaker - reconditioned

general electric tjk436vy400     tjk436vy400

general electric tjk436tm2400   tjk436tm2400

general electric tjk436f000 circuit breaker

general electric tjk436f000 400amp circuit breaker w/ en