TracFeed® TAA - Rail Power Systems

Air-insulated 15 kV switchgear for the 16.7 Hz traction power supply

TracFeed® TAA

The modern solution for your traction power supply

TracFeed® TAA is designed to meet the special requirements of modern 15 kV 16.7 Hz traction power supply and is climate-friendly thanks to SF₆-free air insulation. As the interface between power generation and the overhead contact line system, our traction power switchgear reliably supplies energy for electric railways. TracFeed® TAA can be used with all types of power supply, including autotransformer (AT) and booster systems. A decisive benefit for operators and the environment.

Your advantages at a glance

SF6-free and therefore climate-friendly
Intuitive operation on the front of the panel
Easy to install and maintain locally
Long service life
Standardised safety

Protecting our environment

The environment in which we live is the basis of human life. The raw materials required for the production of goods and services are taken from the environment. However, not all raw materials are available in unlimited quantities or are renewable. That is why one of Rail Power Systems’ goals is to protect our environment.

We make sure that our TracFeed® TAA is produced in a way that conserves resources and remains environmentally friendly in the long term:

Circuit breaker with vacuum interrupters
Air insulation avoids the harmful greenhouse gas sulphur hexafluoride (SF₆)
Simple and safe recycling of the materials used at the end of their service life

The product at a glance

TracFeed® TAA with retracted and extended carriage

Solid-insulated 25 kV switchgear for 50/60 Hz traction power supply
The world’s first type-tested switchgear with complete solid insulation
Can be used with all feeding types including AT and booster systems
Clean, SF6-free and innovative solution for the future
Serves all 1- and 2-pole systems of long-distance and local rail transport
Compact design and small dimensions (400 mm panel width) enable reduced dimensions of the substation structure (up to 50% possible) and significant cost savings
Made in Germany: Development and production in Germany
Origin guarantees precision and quality in processing as well as reliability in railway operations

Mechanical construction

Robust, hot-dip galvanised sheet steel housing for a long service life of at least 30 years
Separate functional compartments for circuit breaker, line feeder and busbar. The busbar is additionally segregated between panels.
Integrated pressure release channel enables safe discharge from the building

Maintenance-friendly design

Electrical devices that are considered maintenance-free in the public power supply require preventive maintenance in traction power systems due to the high switching frequency. The necessary works are minimised by:

Truck-mounted circuit breaker and line testing equipment
→ Simple and time-saving access for maintenance
Air insulation
→ No handling of insulating gas (SF₆), no pressurised compartments required
Metal enclosure
→ Minimises dust deposits

Technical properties of TracFeed® TAA

Compact system design thanks to field-integrated, maintenance-free line testing equipment
Switchgear panels are type-tested according to EN 62271-200 and EN 50152
Prefabricated compact switchgear
Use of circuit breakers meeting special requirements of railway standard
Earthing of line feeders directly using a short circuit-proof earthing switch
Up to 4 medium-voltage cables (630 mm²) with indoor sealing ends and an external diameter of 70 mm can be connected to each outgoing circuit
Easy and fast installation on site
Installation without cable cellar is possible

Technical data TracFeed® TAA

Insulation	Air, at ambient pressure
Rated frequency	16.7 Hz
Rated voltage (Un)	15 kV
Operating voltages	according to EN 50163
Rated impulse voltage (UNi)	125 kV
Rated power frequency withstand (Ud)	50 kV
Rated current (Ir)	up to 2,500 A
Rated short circuit current (Ik)	up to 40 kA 1 s
Rated peak withstand current (Ip)	up to 100 kA
Installation	Indoor
Installation height	< 1,000 m above sea level
Height, overall	2,300 mm
Depth, rear access not required	1,550 mm
Width	800 mm
Weight	approx. 850 kg
Compartment class	LSC2B-PM
Internal arc classification	IAC AFLR 40 kA 0.3 s IAC AFLR 25 kA 1 s

All-round safe operation

Due to frequent, but mostly temporary short circuits in the overhead contact line system, the traction power switchgear is essential for safe electrical railway operation by protecting:

People from dangerous contact and step voltages
The environment from harmful emissions and
Rail infrastructure from undue stress

Maximum safety

Integrated mechanical and electrical interlocking
Metal enclosed with three high voltage compartments
Automatically operated shutter system to protect operators from accessing live parts
Capacitive voltage indication (optional)
Pressure-proof segregations limit internal failure effects
Integrated pressure release channel

Standard field types 1- and 2-pole TracFeed® TAA

Useful addition: Pressure release cover

The TracFeed® DEH pressure release hood can be used in conjunction with the 15 kV TracFeed® TAA switchgear. It diverts excess pressure from the pressure release channels upwards out of the switchgear building. Depending on requirements, pressure release hoods are available with or without a pressure release channel.

Your solution from a single source

Regardless of the type of infeed, TracFeed® TAA fulfils your individual requirements for modern 15 kV 16.7 Hz traction power supply. As a systems provider with over 130 years of experience, we offer the complete package on request – from planning and installation to commissioning and maintenance.