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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
會(huì)員1.png)
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廈門市泰尼電器有限公司
主營(yíng)產(chǎn)品: AB模塊PLC |
參考價(jià) | 面議 |
聯(lián)系方式:張工查看聯(lián)系方式
更新時(shí)間:2018-04-16 12:18:46瀏覽次數(shù):212
聯(lián)系我們時(shí)請(qǐng)說明是環(huán)保在線上看到的信息,謝謝!
一次側(cè)采用外橋式結(jié)線、二次側(cè)采用單母線分段的總降壓變電所主電路圖(下圖),這種主結(jié)線,其一次側(cè)的高壓斷路器QF10也跨接在兩路電源進(jìn)線之間,但處在線路斷路器QF11 和QF12的外側(cè),靠近電源方向,因此稱為外橋式結(jié)線。這種主結(jié)線的運(yùn)行靈活性也較好,供電可靠性同樣較高,適用于一、二級(jí)負(fù)荷的工廠。但與內(nèi)橋式結(jié)線適用的場(chǎng)合有所不同。如果某臺(tái)變壓器例如T1停電檢修或發(fā)生故障時(shí),則斷開QF11 ,投入QF10 (其兩側(cè)QS先合),使兩路電源進(jìn)線又恢復(fù)并列運(yùn)行。這種外橋式適用于電源線路較短而變電所負(fù)荷變動(dòng)較大、適用經(jīng)濟(jì)運(yùn)行需經(jīng)常切換的總降壓變電所。當(dāng)一次電源電網(wǎng)采用環(huán)行結(jié)線時(shí),也宜于采用這種結(jié)線,使環(huán)行電網(wǎng)的穿越功率不通過進(jìn)線斷路器QF11 、QF12 ,這對(duì)改善線路斷路器的工作及其繼電保護(hù)的整定都極為有利。
廚師薛樂和齊彬:
“*夸咱做的產(chǎn)品!"
泰尼菜譜
★主食:AB,施耐德和GE 發(fā)那科
★四菜一湯:AB 1785、1756、1747、1784,施耐德140系列,發(fā)那科A06B系列,西門子6ES,505系列熱賣!
★餐后水果:泰尼現(xiàn)貨
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1756-L71---1756-L71
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