廈門市泰尼電器有限公司
主營產品: AB模塊PLC |
廈門市泰尼電器有限公司
主營產品: AB模塊PLC |
參考價 | 面議 |
主結線方案選擇
對于電源進線電壓為35KV及以上的大中型工廠,通常是先經工廠總降壓變電所降為6—10KV的高壓配電電壓,然后經車間變電所,降為一般低壓設備所需的電壓。
總降壓變電所主結線圖表示工廠接受和分配電能的路徑,由各種電力設備(變壓器、避雷器、斷路器、互感器、隔離開關等)及其連接線組成,通常用單線表示。
主結線對變電所設備選擇和布置,運行的可靠性和經濟性,繼電保護和控制方式都有密切關系,是供電設計中的重要環節。
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泰尼菜譜
★主食:AB,施耐德和GE 發那科
★四菜一湯:AB 1785、1756、1747、1784,施耐德140系列,發那科A06B系列,西門子6ES,505系列熱賣!
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:張亮
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1、一次側采用內橋式結線,二次側采用單母線分段的總降壓變電所主電路圖如下這種主結線,其一次側的QF10跨接在兩路電源線之間,猶如一座橋梁,而處在線路斷路器QF11和QF12的內側,靠近變壓器,因此稱為內橋式結線。這種主結線的運行靈活性較好,供電可靠性較高,適用于一、二級負荷工廠。如果某路電源例如WL1線路停電檢修或發生故障時,則斷開QF11 ,投入QF10 (其兩側QS先合),即可由WL2恢復對變壓器T1的供電,這種內橋式結線多用于電源線路較長因而發生故障和停電檢修的機會較多、并且變電所的變壓器不需要經常切換的總降壓變電所。
1756-L65---1756-L65
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