EMI can be described as any type of electrical interference, signal or noise, which temporarily or permanently affects the ability of electrical or electronic equipment or systems to function correctly. This phenomenon is familiar to everyone, even if we do not have a fundamental understanding of the principles.
This interference is active throughout the environment. Its effects can vary from distorting, electrical measurements, activating equipment at random (health and safety issue), creating severe disruption of testing, communications, data handling, medical and defence activities.
ELDON’s shielded enclosures
Eldon offers its customers EMC enclosures, which are designed to provide the best possible screening effectiveness with built-in long-term reliability, and at an affordable price.
To achieve this goal, Eldon has based its shielded enclosure programme on well proven existing designs, kept modifications to a minimum, maintained existing integrity of the enclosure (IP) rating and ensured existing accessories can still be used wherever possible.
EMC attenuation levels
Depending on the application Eldon can offer two different levels of protection:
* EMC protection offered by standard Eldon enclosure.
* EMC protection offered by an adapted Eldon enclosure.
Standard Eldon enclosures
A standard enclosure offers adequate shielding in many cases. Due to the closed structure and the labyrinth channel around the panels, the enclosure forms a Faraday cage. The enclosure is fitted as standard with zinc plated mounting assemblies, bottom plates and sliding profiles and will thus offer large scale potential equalisation. As a standard feature the mounting plates can be earthed directly to the enclosure frame, which will increase the shielding effect.
Dedicated EMC protection
By improving the standard enclosure further the shielding effectiveness can be increased. The enclosure body and panels are made of zinc plated steel and only the panels are painted on the outside. The standard gasket is replaced by an EMC/IP combination gasket. As a result of these improvements the screening effectiveness is increased up to 40 dB. The total screening effectiveness can in some cases be increased up to 100 dB and more.
Corrosion resistant solutions are also available for use in military and medical applications as well as the chemical and food processing industries.
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