The current transformer is equipped with SF6 density relay on- SF6在线监测系统_SF6检漏仪_SF6传感器_SF6密度继电器

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The current transformer is equipped with SF6 density relay on-line calibration three-way valve device 以上翻译结果来自有道神经网络翻译（YNMT）· 通用场景

发布时间：2017-05-06 来源：ydlcb 浏览次数：39次

SF6 density relay is suitable for SF6 high voltage electrical equipment, when the gas in the equipment leaks, the instrument will issue an alarm and lock function, so as to protect the equipment to protect the role of high voltage electrical equipment, SF6 circuit breaker density relay three-way valve without disassembling the table, the table is checked and tested. The three-way valve of SF6 circuit breaker density relay is simple and convenient to operate, which greatly improves the working efficiency and the reliability of equipment operation.

SF6 density relay is directly installed on the current transformer, which is not easy to check regularly. Each time, the meter needs to be removed and sent to the Electrical Engineering Institute to check. There are several disadvantages in this way, first, disassembly and installation of density relays is likely to cause SF6 gas leakage of equipment; Second, in order to avoid the damage of check valve and density relay caused by multiple disassembly of SF6 equipment density relay, and the operation condition of density relay and density relay can not be timely and effectively grasped. Third, multiple disassembly and installation of the density relay will cause damage to the density relay and check valve interface, resulting in the failure to install the density relay and SF6 gas leakage, which brings hidden dangers to the safe operation of the equipment.

In order to realize online calibration of SF6 density relays of Group 5011 and 5012 current transformers in 500kV boost stations and group 630 and group 600 current transformers in 220kV boost stations, SF6 density relays online calibration system is installed on the four groups of current transformers, so that gas leakage will not affect the safe operation of the equipment due to calibration and disassembly.

Weavers' SF6 density relay online calibration system is based on the SF6 density relay interface on the switch, adding a combined valve with a breaking device, without changing any structure of the switch. The valve is provided with a connector for the original SF6 density relay interface, a SF6 density relay connector, a breaking device and a connector for a special SF6 density relay calibrator. After the connection is made according to the design requirements, the gas path of SF6 density relay and the gas path of switch body can be realized by rotating the breaking device. When it is necessary to verify the SF6 density relay, it is necessary to rotate the breaking device on the valve body to the closed state, and then complete the connection between the calibrator interface and the calibration interface reserved on the valve body, so as to realize the calibration of SF6 density relay, which can greatly save the precious time of maintenance personnel. It can also greatly reduce the risk of SF6 gas leakage due to regular verification disassembly.