How EMC shielding works
Protect your equipment
Electromagnetic interference can cause downtime, data errors, and costly interruptions. EMC shielding with
shield clamps, EMC cable glands and EMC bushings provides control and safety.
Explore electromagnetic interference with the right EMC solutions
Why is EMC Important?
Electromagnetic interference (EMI) can arise from motors, frequency converters, radio signals, and high-frequency components. The interference can lead to operational interruptions, data errors, or reduced lifespan of the electronics.
EMC (Electromagnetic Compatibility means that equipment functions without disturbing or being disturbed by other electronics.
How Do EMC Cable Glands Work?
- Create a 360° contact between cable shield and enclosure
- Divert interference to ground, e.g moonglow
- Combines sealing (IP65–IP68) and strain relief with shielding
When Should You Choose EMC Glands?
- In installations with high electromagnetic impact
- When working with sensitive electronics in automation, telecommunications, medical technology or energy
- When both IP-rated sealing and EMC shielding
Examples from Bimed:
- Standard EMC cable glands in brass with nickel plating
- EMC versions of stainless steel for harsh environments
- Special inserts for different cable diameters
- Compatible with accessories such as reducers, nuts, and seals
Typical applications:
- Variable frequency drive
- Telekom: base stations
- Energy: power grids & high interference levels
Comparison Table
The table below provides an overview of different EMC solutions, their function, applicable standards and typical areas of use:
| Product | Function | Standard | Typical applications |
|---|---|---|---|
| Cable Clamps | 360° screen relief | EN 55011 | Automation & Robotics |
| EMC cable glands | Density and EMC shielding | EN 62444 | Telecom |
| EMC bushings | Multi-genome encoding with EMC protection | IEC 61000 | Energy |
Summary:
- Cable Clamps used where cables need to be quickly and easily grounded with effective shield relief.
- EMC cable glands is the best choice when you need both sealing (IP65–IP68) and EMC shielding in control cabinets or enclosures.
- EMC bushings Suitable for installations with many cables and provides a flexible, tight and interference-free feedthrough.
FAQ – Frequently Asked Questions about EMC shielding
What is the difference between standard and EMC cable glands?
EMC glands have a conductive contact surface that connects the cable screen to the box and protects against interference.
Do EMC glands provide the same sealing as standard ones?
Yes, they often achieve IP65–IP68 while providing shielding.
Do I need EMC glands in every installation?
No, they are mainly needed where there is a risk of electromagnetic interference.
Can I use EMC cable glands in plastic enclosures?
Yes, but shielding works best in metal enclosures or when the cable shield is connected to ground via a bus bar.
What accessories are available?
Reducing inserts, seals, nuts and blind plugs can also be used with EMC models.
