Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland) | Network Solution & Product Manufacturer | CTC Union

Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland) | CTC Union's goal is to provide reliable, temperature resistant and rugged designs for harsh environments. We offer a full spectrum of products, including L3/L2 Switch, PoE Products, EN50155 and E-Mark certified switches.

Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland)

Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland)

Helsinki Metro, operated by Helsinki City Transport, is one of the convenient transportations means that commute rapidly and safely in the capital area. The metro consists of two lines (east and west) and goes into the tunnel or operates above the ground.
Currently, our partner based in Helsinki carried out a project that was to facilitate Helsinki Metro to expand their existing trackside infrastructures for Power over Ethernet (PoE) applications. By upgrading or replacing trackside networking devices, the goal of the project was to establish stable and future-proof networks for endpoint wireless access points, while in return to elevate the level of passenger experience through better networked services.
When preparing for the best suitable trackside PoE devices for the intended purpose, our partner identified several considerations that need to cope with before site deployments. Considerations that need to take into account are listed as follows:

Requirements & Challenges
  • Require rugged industrial products that can endure the extreme weather especially in the outdoor environment.
  • Stable and not affected by environment influences such as shock, vibration.
  • Utilize Power over Ethernet (PoE) technology to transmit data and power to remote networking devices.
Solutions and Benefits

In this success story, the partner who oversaw the project reviewed an array of products that were available on the market and finally decided to use the networking product, IGS-402S-4PH24, designed and manufactured by CTC Union. The partner indicated that the product provided by CTC Union was chosen because of their excellent performance at an affordable price, let alone they can provide solutions to the above mentioned considerations. Benefits of the chosen product are provided below.

● Suitable for Harsh Conditions. Industrial grade products from CTC Union can function normally in harsh and extreme conditions no matter the operating temperature is as low as -40°C or as high as 75°C.
● Against Environment Influences. Trackside devices are usually placed in the environment where surge, turbulences and shocks occur frequently. Under tough lab tests, the chosen product achieves EMC and gains E50121-4 certification which can protect the device from damage due to sudden surges and constant shocks or vibration when trains are passing through.
● Optimize the Implementation of Power over Ethernet (PoE) Technology. The chosen product of this project supports Gigabit Ethernet and Power over Ethernet (PoE) function which can extend the capabilities of Ethernet by delivering both data and power over a twisted pair Ethernet cable to powered wireless access points. By taking advantage of PoE technology, it can help not only reduce the need of installing physical power cable to the outlet, but also reduce the cost of installing power cables (CapEX) and the cost of maintenance efforts (OpEX).
● Advanced Power Design and Boost Technology. To prevent mission-critical services from sudden disconnections, the chosen industrial grade product used in the project can support two power sources that allow wide power input range 24/48VDC (20~57VDC). In addition, the power boost technology can boost up and regulate output power so that the device can provide stable voltage to powered devices (PD).

Trackside Power Over Figure


The product from CTC Union, IGS-402S-4PH24, used in Helsinki Metro project aims to provide stable and reliable transmissions for power over Ethernet applications. This industrial grade product is recognized as the best choice for harsh environment and is also compliant with EN50121-4 and other standards for railway environment. To conclude, IGS-402S-4PH24 offers simple installations, stable services and flexible infrastructure for future expansion to the next generation technology.

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Success Story Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland)
Success Story Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland)

Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland)


Trackside Power over Ethernet (PoE) Applications (Helsinki Metro, Finland) | Network Solution & Product Manufacturer | CTC Union

Based in Taiwan since 1993, CTC Union Technologies Co., Ltd. has been a manufacturer of networking products and a provider of industrial networking solutions. Its main networking products include, network switches, fiber optic cables, network routers, media converters, bypass switches, fiber optic multiplexers, fiber single mode media converters. Industrial networking solutions for optical transport, factory automation, intersection monitoring, wireless network security, traffic monitoring, tunnel and cell tower safety control, wireless machine networking, data offloading, PoE-powered office automation, campus network access.

CTC Union, founded in 1993, is a Taiwan manufacturer of telecommunication products (ex. L2 Ethernet switch, TDM, Transponder) and industrial Ethernet switch, converter, injector. Strictly control all product design, CTC Union’s products pass strict tests and certifications ex. CE, FCC, UL, IEC 62443-4-1, EN50155, EN45545-2, IEC61850-3 standard etc. CTC Union partners with voice and data carriers, enterprises, and industrial grade Ethernet users covers all continents and areas. This global partnership receives direct engineering and technical support from headquarters, located in Taipei, Taiwan.

CTC Union has been providing customers with high quality networking products and networking solutions since 1993, with both advanced technology and 28 years of experience, CTC Union ensures that each customer's requirements are met.