Railroad switch heating system SEIT-04SEIT-4 system is used to remove snow and ice from railroad switches. Multiple techniques are used for switch cleaning:
V - Light outdoor module (IND-V type)Indicator is a sealed metal frame with a plug, having 7 round apertures, which are covered with polycarbonate organic glass.
LED indication blocks are set on special flanges behind the glass. Each block has a plug for the connection of power supply wires.
There is also temperature sensor inside the Indicator frame; it is needed for the setting of maximum LED control current for Indicators according to TS, without violating operation conditions.
V - Light outdoor module (CONTR-V type control unit)The V – light outdoor module (CONTR-V type Control Unit) is intended for the control of V – light outdoor equipment (IND-V type) in the Hot Box Detection (HBD) system on Latvian railways.
Control Unit is considered for installation on the flange of a metal support.
Control Unit is intended for co-operation with V - light HBD Indicator, RSR122 type wheel sensor and train approach (INTER-V type) interface, and is connected to these devices by means of spe-cial cables and a terminal.
Train approach and V - Light indoor module (INTER-V type) interfaceThe V – light indoor module (INTER-V type) Interface is intended for operation in Hot Box Detection (HBD) system on Latvian railways.
Interface is intended for operation with two V-Light Control Units and Hot Box Detection system.
One of the V-Lights is conventionally labeled as the Left (odd*), and the other – as the right (even*). These labels are chosen according to the layout of V-Lights in regard to the container with HBD system.
Interface unit of hot box detection system indicator controlInterface unit of HBD system indicator control is intended for the provision of duplex communications between central dispatcher’s switchboard and control units of Hot Box indicators, which are located at the edges of the control area, as well as for generation of sound signal about a train approaching PDOB.