保定奥兰电气科技有限责任公司

变压器中性点接地电阻柜应用说明

Transformer neutral point grounding resistance ark application instructions 

一、概述

An overview, 

产的CT-DZ1系列变压器中性点接地电阻柜，该系列电阻器主要用于工厂、矿山、选煤厂等生产企业中660V供电系统变压器经电阻接地系统中。产品具有精度高，运行可靠，安装方便，外形美观等特点。

Shanxi narita electrical engineering co., LTD. series transformer neutral point grounding resistance, the series resistor is mainly used in factories, mines, coal preparation plant and other production enterprises in the 660 v power supply transformer in the resistance grounded system. Products with high precision, reliable operation, easy installation, beautiful appearance, etc. 

二、应用说明

Second, the application instructions 

随着工矿企业机械化程度的提高，低压供电系统仍使用380V供电已不能满足发展的要求，为增加低压电网的输送能力，660V供电是一项非常值得推广的新技术，具有良好的社会效益和经济效益。

With the improvement of industrial and mining enterprises mechanization degree, low voltage power supply system still use 380 v power supply can not meet the requirements of development, in order to increase the low voltage power grid transmission capacity, the 660 v power supply is a very worthy of promotion of new technology, has the good social efficiency and economic benefits. 

660V供电系统与380V供电系统的区别在于，380V系统为变压器中性点直接接地的三相四线制系统，而660V系统为提高运行安全，变压器中性点应经电阻接地，并辅以漏电保护装置作为系统单相接地的保护，提高漏电保护的灵敏度。

660 v and 380 v power supply system of power supply system the difference is that the 380 v system for transformer neutral point grounding of three phase four wire system directly, and the 660 v system to improve the operation safety, transformer neutral point grounding resistance, shall be supplemented by the leakage protection device as the single-phase grounding protection system, improve the sensitivity of leakage protection. 

我公司生产的CT-DZ1接地电阻柜主要运用于以上介绍的660V系统的变压器中性点通过电阻接地系统。产品外壳可根据用户的不同需求，采用不型托辊 吸水树脂 天津水处理设备 邯郸断桥铝门窗 唐山防水 检查井模具 沟盖板模具锈钢或冷轧钢板制作，外形美观，耐腐蚀。电阻元件采用采用镍铬合金（Cr20Ni80）材料，温度系数小，阻值稳定。