1746-C7 1746-C7
1746-C71746-C7固態(tài)繼電器過(guò)電壓的保護(hù)
當(dāng)負(fù)載為感性或容性時(shí)，很可能產(chǎn)生大于固態(tài)繼電器所能承受的瞬態(tài)電壓(阻斷電壓)和電壓上升率(dv/dt)。若保護(hù)措施不當(dāng)或響應(yīng)不靈敏，不僅會(huì)造成固態(tài)繼電器失控，嚴(yán)重時(shí)還可能燒毀固態(tài)繼電器或設(shè)備。因此，過(guò)電壓的保護(hù)是必須的。普遍的應(yīng)用是外加瞬態(tài)抑制(RC吸收)電路和電壓鉗位電路(雙向穩(wěn)壓二極管、壓敏電阻)。
【公 司】： 廈門(mén)泰尼電氣有限公司
【主 營(yíng)】： AB、GE、施耐德等各類PLC產(chǎn)品
【價(jià) 格】： 電議
【發(fā)布人】： 張亮
【電 話】： 18030028083
【所在地】： 福建 - 廈門(mén)
【座 機(jī)】： 0592-6809819
【來(lái) 源】： 供應(yīng)信息 > 電工、電氣 > PLC
【Q Q】： 2314094943
固態(tài)繼電器過(guò)熱保護(hù)
固態(tài)繼電器工作時(shí)，在其內(nèi)部芯片上存在一定的功率損耗，這個(gè)損耗功率主要由固態(tài)繼電器輸出電壓降與負(fù)載電流乘積決定，以發(fā)熱的形式消耗掉。因此散熱的好壞直接影響到固態(tài)繼電器工作的可靠性。一般而言，電流大于10A的固態(tài)繼電器應(yīng)加裝散熱器，必要時(shí)還要進(jìn)行風(fēng)冷或水冷。良好的散熱條件對(duì)于固態(tài)繼電器的可靠工作是十分重要的。
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