The contact wire electric isolation switch is one of the important equipment in the electrified railway traction power supply system. The contact wire switch monitoring system is of great significance for quickly isolating the fault area, timely reducing the power outage range, timely segmented operation, reducing the labor intensity of on-site personnel, eliminating safety hazards, and improving railway transportation capacity.

With the rapid development of China's railway industry, especially the high-speed railway industry, the traditional contact network switch monitoring system has exposed many shortcomings due to its design limitations, resulting in multiple false alarms, refusal to operate, and misoperation accidents. Our company has successfully developed a new generation of contact network switch monitoring system based on relevant national standards, railway standards, combined with more than ten years of experience in the railway remote control industry and data from multiple on-site inspections.

Compliant with China Railway Engineering Corporation【Temporary Technical Conditions for Electric Isolation Switches and Control Devices for Contact Networks (2018) No. 138.

application system

System advantages

The first true color LCD display in the entire railway：

Measures to prevent switch misoperation and refusal to operate：

Incorporate the control power supply of the operating mechanism of the contact line isolation switch into the remote control to avoid switch misoperation caused by control circuit interference and refusal to move caused by control circuit tripping.

The control output adopts dual relay output to further reduce the possibility of switch misoperation.

Measures to prevent false alarm of switch status:

Can automatically identify and filter out instantaneous continuous displacement of remote signals,The RTU host retains displacement records and can filter out switch position displacement that does not occur in pairs. The RTU host retains displacement records and supports scheduling call for displacement records. This function can be set to enable or disable. FTU is equipped with a filtering circuit to filter out interference from the cables connecting the operating mechanism and FTU.

Functional Features

Remote signaling function：

Receive and display the position signal of the isolation switch; Receive and display isolation switch status signals; The switch position supports dual point remote signaling;FTU online status; FTU battery status.

Remote control function：

Receive, reverse calibrate, and drive corresponding isolation switches

self-diagnosis：

Power on communication function self-test; Power on system data self-test; Power on clock self-test; Power on memory self-test; System database validity self-test.

HMI：

Industrial grade320 * 240TFT color display screen; Real time display of switch status; Real time display of FTU online status; Real time display of FTU battery status; Query of switch displacement records; Query of switch operation records; Parameter configuration.

data record：

Switch displacement record; Switch operation record; Login records.

Setting function：

The remote control pulse output time can be set; The parameters of each system can be adjusted.

Clock synchronization function：

It is possible to set the school time by configuring the school schedule; It can be timed through the scheduling master station software.

Self start function：

Each module is equipped with a watchdog, which has a self starting function in case of power on or other abnormal situations.

data record：

Switch displacement record; Switch operation record; Login records.

Selection of Contact Network Switch Monitoring Host

RTU-C-Smart FCxx (xx represents the number of grid switches, with a value range of 1-18)

performance parameter

External dimensions