Contact Us
Mobile:+86 15203128120
E-mail:bdsmrdq@163.com
Address: Building 2, Building 14, Baoding Gaoxin Dizhigu, 3099 Xiangyang North Street, Gaokai District, Baoding City, Hebei Province,China
SMR-ZN09B Small Current Ground Selection Device
- Description
-
1. Product Overview
In our country, most 3kV to 66kV distribution networks adopt a small current grounding method, which is a non-effective grounding method for the neutral point, including neutral point ungrounded systems and neutral point grounded through arc suppression coils or large resistors. The advantage of the non-effective grounding system is that it can automatically extinguish arcs and restore insulation in most cases when a single-phase grounding occurs. However, when a permanent grounding fault occurs, in order to prevent the fault from expanding due to the voltage rise of the non-fault phase, it is necessary to quickly identify the fault line and cut it off, which raises the issue of single-phase grounding fault line selection. This problem has not been well solved for a long time, restricting the development of distribution network automation.
2. Product Features
Our company's small current system grounding line selection device is a product developed based on the current domestic market's "small current grounding line selection device" with upgrades and modifications. When a single-phase grounding fault occurs in a small current grounding system, this device has the function of automatic alarm and accurately locating the fault line. It prominently solves the problem of long-term reliable operation of the device in harsh environments. Its structure is more reasonable and lightweight, making it suitable for the renovation of old power plants and substations, as well as for new power plants and substations, directly forming a comprehensive automation system.
Key words:
Online Inquiry
Mobile/WeChat
