| 額定阻值范圍 | 0.1Ω∽1500Ω |
|---|---|
| 運行通流時間 | 5s，10s，30s，60s，10mins，連續運行 |
| 防護等級 | IP20～IP55 |
| 安裝方式 | 戶內、戶外 |
| 產地 | 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及電容電流雖小但為防止諧振過電壓的電廠、廠用電系統，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、大型工業園區、電廠、海上平臺配電系統、大型化工企業等
??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.
??三相交流電網中性點與大地間電氣連接的方式，稱為電網中性點接地方式。電網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，中性點經接地變壓器經電阻接地。（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)
