Importance of EMC-shielded cable glands


A five-step pre-assembly process is designed to minimise the installation effort required on the vehicle and reduce costs

What Are EMC Cable Glands?

Electronic components in our homes, factories, offices, and all other facets of life are increasingly sensitive to electromagnetic interference. On the other hand, there is an increased frequency of interference instances, making electrical components and appliances particularly sensitive to interference. As such, there is a need to shield electrical appliances from interference.

Using a maximally shielded cable to protect electrical appliances and instruments from electromagnetic interference is not enough. The sensitive interconnection and/or termination points should be shielded as well. This is where EMC cable glands come in – they protect the connection point from electromagnetic interference. An EMC-compliant gland will ensure protection integrity carries over from the cable to the next cable or the termination point.

In the complex world of cars, almost every part is incredibly important. There are parts that protect, support, and connect other parts. For example, there are glands that keep cables attached to the car. These glands rarely receive much attention. They don't get as much credit as they deserve because they are so important and do such an incredible job.

In order to solve this problem, you must first understand the needs of three different types of people. You need to understand the needs of vehicle manufacturers, who want reliable communications with their cars and trucks. You also need to understand the needs of the cable assembly companies, who build the cables for these vehicles. Finally, you must understand electromagnetic compatibility, which is a field all its own.

Electrically-powered vehicles are potentially both susceptible to and sources of electromagnetic interference, as they rely on sensitive control electronics and high-voltage power electronics such as inverters and converters that operate at seemingly ever-higher switching frequencies. Switching electric currents on and off generates radio frequency pulses that will induce unwanted currents through unshielded components, causing glitches and failures.

To protect them from the damaging current, electronic control modules and power electronics devices are housed in boxes made from metal or plastic that is very conductive. The boxes must form an unbroken cage around the whole system to allow any currents induced in it to flow to ground without reaching the components inside.

Developing the supporting ring and contact sleeve solution in combination with the new axial crimping technology was itself a major challenge.

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