S 代表手动机构D 代表电动机构系统电压等级变压器中性点间隙接地保护成套装置保定市新思达电气科技有限公司使用说明书保定市新思达电气科技有限公司NS-ZJB 系列变压器中性点间隙接地保护装置一、 概 述1、NS-ZJB 型变压器中性点间隙接地保护装置专用于110KV、220KV、330KV、500KV 电力变压器中性点，以实现变压器中性点接地运行或不接地运行两种不同的运行方式；从而避开由于系统故障，引发变压器中性点电压升高造成对变压器的损害。本产品广泛应用于电力、冶金、石化、建筑、环保等领域。2、一般来说，棒间隙为极不均匀电场，放电电压不稳定分散性大决定其保护性能差。球间隙为均匀电场放电电压稳定，分散性小保护性能好。球间隙现场调试比较容易，用户可根据自己地区情况现场调试；而棒间隙尖顶特别难对准，所以现场调试难度大。球间隙采纳不锈钢球表面镀银、成本高并且固定要求高，所以许多厂家为降低成本而采纳棒间隙，忽略了使用效果。3、 电流互感器选用：采纳环氧树脂浇注的干式电流互感器。电流互感器装在不锈钢箱体里，不受环境气候影响，使用寿命长，使保护不会出现误动或拒动且稳定可靠。1, NS-ZJB type transformer neutral point gap grounding protection device for 110KV, 220KV, 330KV, 500KV transformer neutral point, in order to realize the transformer neutral point grounding operation or not grounding operation two kinds of operation mode; to avoid the system failure, caused by transformer neutral point voltage rise resulting from damage to the transformer. This product is widely used in the field of electric power, metallurgy, petrochemical, construction, environmental protection etc..2, in general, rod gap is very non-uniform electric field, discharge voltage instability large dispersion determines the protection of poor performance. The ball gap for uniform electric discharge voltage stability, small dispersibility and good protection performance. The ball gap field debugging easier, the user can according to their own circumstances and site commissioning; rod gap pointed particularly difficult ali...
