C series connectors can meet the requirements and preambles in Safety Critical Items such as rail braking systems
Train deceleration is a key function that implies passengers’ safety, environment, and property protection, and nothing can be left to chance or neglected when it is the moment to select the right parts that have to compose the brake system. With this in mind, the design engineers have to pay attention to reducing the overall maintenance costs as well to provide a dependable and market-aligned solution.
Safety-critical applications are those where if systems fail, they can cause loss of life, significant property damage, or damage to the environment. These applications can be found in different segments of the industry such as medical devices, aircraft flight control, nuclear systems, automotive, and transport sectors. The railway industry is not an exception. Safety-critical systems are often exposed to high vibrations and extreme temperatures and therefore they need reliable and robust components to achieve the necessary performance, system qualifications, and customer confidence to reach satisfactory technical and sales results. Normally the products supplied to this industry are classed as ‘safety critical’ items and therefore must conform to specific Rail Standards for Safety Critical Items
Braking systems are among the sensitive applications that require a reliable design, and their components must work under extreme temperature, mechanical shock and vibration, difficult access, water or dirt and dust ingress, and fretting corrosion. It’s a tall order. Electrical connectors are part of this challenging design and have to withstand all these different challenges and assure precise operating performance and proper brake cylinder pressure under all braking conditions. Of course, the combination of superior technical features of the connector is essential to reach this demanding result and solve the system manufacturers’ requirements.
In general, when the application is vital for the users’ safety, in this case, passengers, every single product composing the system has to provide tested superior performances and meet the design and operational demands. The connectors have to be made of robust materials to provide enhanced resistance to fretting wear when exposed to severe vibration and have to provide a long service life and a stable electrical signal. In addition, to ensure safety, the engineers that design components have to be able to follow the industry trends and develop the sustainable solutions required by the market, and, last but not least, reduce the cost of maintenance by supplying durable solutions.
C series connectors, a family of Smiths Interconnect's EMC Metallic Circular Connectors, have been designed keeping in mind all the above-mentioned requirements and preambles. The series, featuring Hypertac Hyperboloid contact technology, is an IP67 circular connector with an EMC metal housing suitable for automatic train, operation, and traffic control and in particular for sensors in train braking systems as they resist the most extreme environmental conditions.
These connectors can offer robust sealed body shells with mechanical keying systems to ensure safe mating, cable clamps with large cabling chambers to allow various cable diameters, and shielding for EMI and RFI protection. They can also typically be ordered as cable assemblies to provide a complete interconnect solution with low costs of maintenance. Their technical features assure precise operating performance and proper brake cylinder pressure under all braking conditions and the metal alloy that composes the connector body provides enhanced resistance to fretting wear when exposed to severe vibrations.
The cost-effectiveness comes from Smiths Interconnect's C-series connectors lasting longer being made from better materials, the EMC shielding, a coupling nut that ensures a secure connection, and proven embedded hyperboloid contact technology. In particular, hyperboloid contact technology is a well-known superior performing contact technology for use in demanding environments where reliability and safety are critical.
The unique shape of the contact sleeve is formed by hyperbolically arranged contact wires, which align themselves elastically as contact lines around the pin, providing a number of linear contact paths. This gives the integrity to signal that other contact technologies can’t deliver.
All this enables C series connectors to provide unparalleled immunity to shock, vibration, and environmental impacts to ensure uninterrupted signal integrity
In addition, their design offers a corrosion resistance of 500h to salt spray, a CEI 68-1 category in terms of temperature resistance, and a vibration withstanding of 25 to 250 Hz - 5 g following NF F 61-030 Technical Standards. An expert engineer working in the field of safety-critical systems should understand at a first sight that the above-mentioned connectors are ideal to serve devices that must be reliable and precise to provide better train control.
C Series
C Series, featuring Hypertac Hyperboloid technology, is an IP67 circular connector with an EMC metal housing. The C Series connectors have a compact size and feature gold-plated contacts. They provide superior resistance to high levels of shock and vibration in rail applications.
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