| 額定阻值范圍 | 0.1Ω∽1500Ω |
|---|---|
| 運行通流時間 | 5s，10s，30s，60s，10mins，連續(xù)運行 |
| 防護等級 | IP20～IP55 |
| 安裝方式 | 戶內、戶外 |
| 產(chǎn)地 | 溧陽 |
| 額定電流 | 1～5000A |
| 額定電壓 | 0.33 ～110KV |
| 結構形式 | 柜式 |
| 品牌 | 溧陽眾誠達 |
| 型號 | NGRCC |
| 加工定制 | 是 |
??產(chǎn)品詳情
??中性點接地電阻柜及其配套控制柜
??Neutral Grounding Resistor and Control Cabinet
??產(chǎn)品描述（Product Profile）
??中性點接地電阻主要用于110KV以下主要由電纜線路構成。單相接地故障電容電流較大的送配電系統(tǒng)及電容電流雖小但為防止諧振過電壓的電廠、廠用電系統(tǒng)，前者多為低阻接地而后者多為高阻接地。因此，中性點接地電阻特別適用于城市配電網(wǎng)、大型工業(yè)園區(qū)、電廠、海上平臺配電系統(tǒng)、大型化工企業(yè)等
??Neutral Grounding resistors are mainly applied to the electric power system under 110KV.One is the electric power distribution system which is composed by cable lines,with big fault capacitance and current(single-phase earthing).The other is the electric power system for electric power plant whose capacitance and current are little but to avoid the resonance.The former system is mostly low-resistance earthing,and later is high-resistance earthing.Therefore,neutral Grounding resistors are especially suitable for urban electric networks,large industry garden,electric power plant,maritime electric power distribution system and large chemical enterprises,etc.
??三相交流電網(wǎng)中性點與大地間電氣連接的方式，稱為電網(wǎng)中性點接地方式。電網(wǎng)中性點接地電阻工作原理圖如下：
??The electrical connection mode between neutral point three-phase AC power grid and earth,called grounding mode for neutral point.Neutral point grounding resistor principle diagram as follows:
??對變壓器中性點，其電阻接地有兩種方式：
??對變壓器副邊為星型接法的變壓器，中性點經(jīng)電阻直接接地。（見圖一）
??對變壓器副邊為角型接法的變壓器，中性點經(jīng)接地變壓器經(jīng)電阻接地。（見圖二）
??Neutral point of transformer,the grounding resistor has two ways:
??On the secondary side the transformer is a star connection method,the neutral point grounding resistor straight.(see Figure.1)
??On the secondary side the transformer is a triangle connection method,the neutral point grounding transformer grounding through grounding transformer.(see Figure.2)
??以上電阻采用不銹鋼電阻片，CT可選（若帶接地變、真空接觸器、隔離開關設備，通流時間＞10S時，箱體尺寸需另外調整）
??Stainless steel resistors,CT is optional(if other equipment like grounding transformer,isolating switch,vacuum contactor and the rated time＞10S,the enclosure dimensions will be adjusted)
