Sigma Coachair Group - Sigma Range of Rolling Stock Air Conditioning Systems

Sigma Coachair Group produces purpose built air conditioning systems to provide the best in passenger comfort for locomotives & mass transit vehicles all around the world. Combining state of the art equipment designs with quality materials, Sigma Coachair Group knows what it takes to deal with tough, varied and extreme environmental conditions, with thousands of Sigma Rail air conditioning systems fitted worldwide.

Sigma Coachair Group is proud of its history as a pioneer in the evolution of mass transit air conditioning systems. Sigma Coachair Group was first to the market and a world leader with:-

• Fully integrated packaged passenger car air conditioning systems encompassing the complete refrigeration system, electronics and PLC controls
• Lightweight monocoque stainless steel construction
• Self-sealing unit to vehicle interface
• Inverter driven Locomotive Air Conditioning systems
• Packaged electrically driven Locomotive Air Conditioning unit
• The introduction of a complete system with dual independent refrigeration systems for effective redundancy within the unit itself

CLIMATE CONTROL UNIT CAPABILITIES

Sigma Coachair Group equipment designs handle all rail application environments with ease using the latest technology in PLC, electronic controls and environmentally friendly refrigerants. Our latest designs have the capability to be fully integrated into a Train’s Operating Systems for driver and service technician information, monitoring and control.

Sigma rail applications span the globe handling all types of conditions, from the cold climate of Switzerland on the Swiss Tilt Train, the mass crush of the Hong Kong subway, to the Malaysian Star LRV or the Eastern Oriental Express. This is in contrast to the Extreme heat within a locomotive Drivers cab crossing the Nullarbor desert of Australia. In all these differing temperatures the climate control systems regulate themselves to operator at predetermined temperature control settings providing passenger comfort.

With the diverse range of applications that are required, our products are specifically designed and tailored to meet the customers’ exact requirements. The configuration and installation of units varies from roof, under car or side mounted packages.

The capacity range is endless with our capability ranging from a single circuit 5kW cooling 3 kW heating unit, to a high capacity twin circuit 55kW cooling and 40kW heating unit.

STRENGTH OF DESIGN

All units are designed within our engineering centre using the latest design technology of a combination of 3D modelling, Finite Element Analysis (FEM) and Failure Mode Effect Criticality Analysis (FMECA). This is to ensure that our product will withstand the most rigorous operating conditions and fit into areas that once where deemed impossible. This design process also gives us the ability to ensure the units will handle the elements, vibrations and have an extended life expectancy in their operating environment on the vehicle.

GLOBAL PRESENCE

Having products in service all over the world, we have sales, design and technical support facilities strategically located in United Kingdom, Chicago USA, China (Shanghai and Beijing) whilst the our Head Office is in Sydney Australia which includes a state of the art Research and Design facility.

HEADING FOR THE FUTURE

Our total support achievements are testimonial of our capabilities, always looking forward to providing equipment that complies with agreed customer expectations. With this in mind we utilise the combined services of our Research and Development facility in Sydney Australia. Together with our local development and experience added to our world network of technical facilities to ensure our customers receive the best of the latest technology.

FIND US

To find us we can be located in three continents with agents in others. Just click on our Regional Offices button.