◆ Overview

12kV feed line, a T-connected user branch line or its internal failure, usually lead to trunk lines and other adjacent users of the power failure, the survey statistics show that the spread of the accident about 20% of the distribution network accident ~ 30% or higher ratio, the consequences, one is to expand the scope of power outages, is responsible for causing disputes. In the above-mentioned user branch T-type junction (responsibility demarcation point) to install a user boundary load switch (want to watch the dog), is to solve the above-mentioned problem of the ideal solution.

◆ Features

Automatic cut off single-phase ground fault User branch line occurs when the single-phase ground fault, the demarcation switch automatically sub-gate, substation and other branch users on the feeder can not feel the occurrence of failure; automatic isolation phase short circuit fault

When the user branch line is short-circuited, the boundary switch will be opened immediately after the substation outlet protection trip. After the substation coincides, the faulty line is isolated and the other branch users on the feeder line quickly restore the power supply (equivalent to an instantaneous fault); fast locate the fault point

The user branch line accident caused by the demarcation switch protection action, only the responsibility of the user power failure, by the initiative to submit the accident information, the power company can quickly send staff field investigation; demarcation switch with a communication module, the information will be automatically submitted to the power management center The

Monitor the user load, the demarcation switch can be configured wired or wireless communication accessories will monitor the data transmitted to the power management center, to achieve the user load remote real-time data monitoring.

With ring network operation function, can be applied to ring network lines

With metering function, can monitor the line voltage, current, frequency and power, and can be far to the management center

With harmonic analysis function, for future power pollution control to provide a reliable basis

◆ Model and meaning

Switch body

Controller

Ordering Information

1, the order should specify the product model, name, quantity and rated value. 2, the user must provide current transformer ratio. 3, the user must provide installation, select the appropriate solid attachment. 4, the user must be selected according to the use of the corresponding functional configuration. 5, indicate whether equipped with GPRS function. 6, to determine the shape of the controller structure. 7, other special requirements, such as the main circuit outlet mode (hard outlet, cable outlet) and so on.