Products and Services

These are Len products which are applicable for both mainline and urban transportation

Products

Supported by experienced experts in their fields internationally certified (IRSE License). PT Len Railway Systems is always ready to provide quality in accordance with customer demands, competitive prices and the best services.
LRS has experiences and achievements in the main line, which makes LRS ready to handle full system E&M urban transportation through various competitive products and services. With over twenty years of experience in wayside and onboard installation of railway systems, LRS provides installation work for various equipment of railway systems based on customer specification. LRS provides integration test, hardware & data function tests using standard equipment or simulator that is done by experienced testers.
PT Len Railway Systems - Indonesia
  • Signalling Systems
  • Substations Systems
  • Telecommunication Systems
Len CTC
Len Local Interface
Axle Counter Len - Altpro
Len LED Signal
Len MDP
Len Link Brake Device
Len Visual Control Panel
Len Telecommunication Rack

Len CTC

Len Centralized Traffic Control (CTC) is an integrated system to control and supervise signalling system and or types of equipment in the stations from a central station.

Len CTC system has several main functions such as controlling, monitoring, control schedules, and train describers.

The software used to design CTC in a MMI (Man Machine Interface).

The software provides a menu of editing to create or modify the layout of the station, And boolean logic. station if one day their interlocking data modification.
 Centralized Traffic Control (CTC) consists of :

1. Main Server CTC and Control Desk
2. Workstation LCD Panel
3. Workstation for the operator
4. Display LCD Panel for CTC

Len Local Interface

Functions of the Len Local Interface is an interface operator that can connect to a variety of interlocking system.
The local interface consist of two types :
1. Local Interface Video
2. Local Interface Mozaic Panel

Axle Counter Len – Altpro

Axle Counter is a device on a train that detects passing trains instead of the track circuit
Counting heads (or 'detection point') mounted on each end of the section
A point detection consists of two independent sensors so that the device can detect the direction of the train with the order in which the sensor passes.
A safety-critical computer called'evaluators‘ located in the city centre, with a detection point is located in a required field.

Len LED Signal

Signals based on the principle of Light colour is the signalling system that gives orders to the machinist based on the colour of light that is active at a time.
· Use LED (Light Emitting Diode) technology that makes energy efficient.
· Light colour chromaticity, luminance and angle distributions of LED used are in accordance with international standards.

Len Main Distribution Panel (MDP)

Signalling system needs to be supported by an optimal power supply, one of which is the distribution panel signalling, or the Main Distribution Panel (MDP).
· Len MDP panel combines the functions of 3 pieces at a time that panel Change Over Switch (COS), distribution panels, and panel Automatic Transfer Switch (ATS)
· Len MDP uses a simplified control system protection for voltage shock and the short circuit which makes it more reliable and easier to process maintenance and troubleshooting
Len SIV
Len SIV is an equipment on the train which serves to provide Voltage 220 /380 V AC, it is used for lighting, motor compressors, fan, etc. In addition that SIV also provides 24V DC voltage for controlling the voltage as well as the battery charger. Support for LRT, Monorail, and EMU.
Len VVVF Inverter
Len VVVF Inverter is an equipment on the train that serves to control the induction motor. It serves as a major driver of the train system. Advanced control is implemented to improve efficiency and comfort during acceleration and deceleration of the train. In addition, regenerative braking is also implemented to improve power efficiency as well as the efficiency of the mechanical braking components. Support for LRT, Monorail, and EMU.
Len Link Brake Device

Len Linked Brake Device (LBD) panel is an instrument which connects one power substation to another in order to generate the inter tripping. This is a protection function to prevent the neighbour power substation being abnormally loaded. The host and the neighbour substation exchange the status through the LBD panel. They use fibre optic as a communication media interface and the ethernet TCP/IP as the communication protocol. Whenever a problem happened, such as a short circuit, the host LBD will send the trip command (status) to its neighbour. When this status is received, the neighbour will do the trip
Len Visual Control Panel.

Len Visual Control Panel (VCP) is a panel which controls and monitors the traction power substation locally. It is a touch screen operated based on HMI which runs on embedded PC.
Len Telecommunication Rack

The reliable communication system is needed to support Signaling System. Len Telecommunication Rack is a complete solution for delivering data and voice communication between stations. We integrate several devices to create a highly reliable communication system based on SDH / Gigabit Ethernet switch, which Consists of several devices in it, such as Len Telecommunication Rack

· Multiplexer
· SDH / Gigabit Ethernet
· PABX
· Voice Recorder
· Sound Speaker
· Backup Link Switch (BLS)
· Switch
· Sentranik/Gentanik

Services

PT. Len Railway Systems proven experiences make us confident in designing reliable products. Provides integration test, hardware & data function test using standard equipment or simulator that is done by experienced testers. To maintain the high level of railway services, LRS always makes sure to maintain the functionality of equipment of railways system periodically.
  • Design
  • Manufacturing
  • Testing
  • Commissioning
  • Installations
  • Maintenance
  • Training
Our engineers always do the design before applying to the device. The design is used as a reference for installing the device on site. Designs which we do consist of: circuit design, mechanical design, traction design and power substations design. We have been working on several projects interlocking, such as; SSI Alstom, VPI west race, MIS-801, LIS-02 (Len Interlocking Systems).
Producing equipment supported by PT. Len Industri (Persero) as a parent company of PT. Len Railway Systems.
Before the installation process is done, the results of the design are tested first through the testing process. It is useful to check if the design is correct or to be revised.
As well as testing commissioning is also carried out on some of the products at the project site.
We do the installation on the wayside, indoor, and outdoor on board for products such as LCP, point machine, interlocking rack, axle counters. and etc.
Maintain the systems supported by PT. Len Rekaprima Semesta as a subsidiary of PT. Len Railway Systems.
Provide training on systems to the participants who will operate the systems.