190E-AND2-DC10C-KN現(xiàn)貨
原裝進(jìn)口!低價實惠!原裝!
【聚福興專業(yè)銷售】【原裝進(jìn)口模塊】【價格優(yōu)勢超實惠】
使用安全PLC/DCS 及安全網(wǎng)絡(luò)的優(yōu)點包括:
1 機(jī)械控制更大的集成性和靈活性
2 當(dāng)標(biāo)準(zhǔn)控制層智能化時,能夠進(jìn)行更好更容易的故障診斷
3 更快、更方便的維護(hù)
4 減少安裝、調(diào)試以及重新配置的費用
5 與對于邏輯單獨使用安全繼電器相比,降低了設(shè)計和硬件成本
低壓斷路器用作交、直流線路的過載、短路保護(hù),被廣泛應(yīng)用于建筑照明、動力配電線路、用電設(shè)備作為控制開關(guān)和保護(hù)設(shè)備,也可用于不頻繁起動電動機(jī)以及操作或轉(zhuǎn)換電路
1.種類
(1)式斷路器
(2)塑料外殼式斷路器
(3)電動斥力式限流斷路器
(4)剩余電流保護(hù)斷路器
(5)直流快速斷路器
(6)滅磁斷路器
2.低壓斷路器的選用要點
表示低壓斷路器性能的主要指標(biāo)有分?jǐn)嗄芰捅Wo(hù)特性。
分?jǐn)嗄芰κ侵搁_關(guān)在指定的使用和工作條件及在規(guī)定的電壓下接通和分?jǐn)嗟拇箅娏髦担╧A)。
保護(hù)特性主要分為過電流保護(hù)、過載保護(hù)和欠電壓保護(hù)三種。
(1)額定電壓
斷路器的額定電壓應(yīng)大于線路額定電壓。主要是交流380V或直流220V的供電系統(tǒng)。按線路額定電壓進(jìn)行選擇時應(yīng)滿足下列條件:
(4-10-5)
式中 ——低壓斷路器的額定電壓,V;
——線路的額定電壓,V。
£3000 ex VAT, new in 2009, Full working order
Returns: Accepted
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