A Containerized Shielded Enclosure can provide a practical alternative to constructing a permanent shielded room.
It can be transported, deployed, relocated, and customized for different applications. Commercial solutions are available in standard ISO container sizes as well as bespoke dimensions.
But purchasing the right system requires more than comparing container dimensions and prices.
Do not choose a shielded container simply because it is the cheapest option.
Do not pay for specifications that have no connection to your actual application either.
The goal is to match the enclosure to the electromagnetic environment it needs to control.
1. Don’t Start With the Container Size
Size is important, but it should not be the first and only consideration.
Before selecting a Containerized Shielded Enclosure, define:
- Required internal dimensions
- Equipment size
- Operator space
- Door requirements
- Equipment access
- HVAC requirements
- Power requirements
- Transportation requirements
A 20-foot or 40-foot ISO container may be convenient for transportation, but custom dimensions can be more appropriate for specialized applications.
2. Don’t Choose Based Only on Shielding Effectiveness
Shielding effectiveness is one of the most important specifications.
But one number is not enough.
Ask:
- At what frequencies was it tested?
- What measurement standard was used?
- Was the complete enclosure tested?
- Were doors and penetrations included?
- What happens at the power and signal interfaces?
A professional EMI Shielded Container should be evaluated as a complete enclosure rather than as a piece of conductive material.
3. Don’t Forget the Penetrations
The final configuration may require:
- Power filters
- Signal filters
- Communication interfaces
- Waveguide vents
- Cable feedthroughs
- Grounding connections
These components should be included in the design from the beginning.
Retrofitting them later can increase both cost and engineering complexity.
4. Don’t Assume Every Project Needs the Same Configuration
A container used for EMC testing is different from one used for secure communications.
A mobile RF test enclosure may require different features from a HEMP-protected container.
Possible applications include:
- EMC pre-compliance testing
- RF testing
- Wireless testing
- Secure communications
- Defense electronics
- Mobile laboratories
- Sensitive equipment protection
Commercial deployable shielded enclosures are available with customized electrical, HVAC, shielding, and other infrastructure depending on the application.
5. Don’t Ignore Transportation
One of the biggest advantages of a Containerized Shielded Enclosure is mobility.
But mobility needs to be considered during the structural design.
Depending on the project, factors can include:
- ISO dimensions
- Lifting points
- Forklift pockets
- Structural reinforcement
- Road transportation
- Sea transportation
- Deployment location
A shielded enclosure that performs well but cannot be transported efficiently may not be the right solution for a mobile project.
6. Consider Customization Instead of Over-Specification
There is no universal configuration for every shielded container.
One project may require:
RF shielding + power filtering + HVAC
Another may require:
RF shielding + secure communication interfaces + access control
A more demanding project may require:
RF shielding + HEMP protection + filtered power + specialized ventilation
Do not purchase a standard configuration simply because it contains more features.
A properly customized Containerized Shielded Enclosure can be a better engineering and commercial solution.
Conclusion
The best Containerized Shielded Enclosure is not necessarily the largest, most expensive, or most heavily equipped model.
It is the one that matches:
- Shielding requirements
- Frequency range
- Equipment size
- Penetration requirements
- Power and signal interfaces
- Ventilation
- Transportation
- Installation environment
Do not buy a container and then try to turn it into a shielded facility afterward.
Design the shielding system, then design the container around it.
For more information：
The Weakest Point of a Shielded Container Is Usually Not the Shielding Wall
