Zero exclusion zone substations
Magnetic shielding for MV/LV substations with zero first approximation distance
measurements taken on the HV/LV substation
The result of an efficient and accurate shielding system
measurements taken on the HV/LV substation
The result of an efficient and accurate shielding system
measurements taken on the HV/LV substation
The result of an efficient and accurate shielding system
The result of an efficient and accurate shielding system.
Without any shielding system installed, the exclusion zone, intended as the safe distance for the protection of general population according Italian Prime Ministerial Decree dated 8th of July 2003 (f = 50 Hz), can extend to up to 5-6 m. In standard conditions and with a transformer power of around 630 kVA the safety distance is, in any case, not much lower.
It is reasonable to think that any HV/LV substation which is not shielded should be surrounded by a fence/hedge/warning signs for the purpose of avoiding that people access areas where the induction value might be above legal limits and could, hence, interact with the human body and/or with implantable medical devices, increasing the risk of health implications.
What is a zero exclusion zone substation
Without any shielding system installed, the exclusion zone, intended as the safe distance for the protection of general population according Italian Prime Ministerial Decree dated 8th of July 2003 (f = 50 Hz), can extend to up to 5-6 m. In standard conditions and with a transformer power of around 630 kVA the safety distance is, in any case, not much lower.
It is reasonable to think that any HV/LV substation which is not shielded should be surrounded by a fence/hedge/warning signs for the purpose of avoiding that people access areas where the induction value might be above legal limits and could, hence, interact with the human body and/or with implantable medical devices, increasing the risk of health implications.
How the solution works
The technology behind Zero D.P.A. Substations is based on the application of specialised shielding materials such as G-iron ArmoFlex®and AFH™, which provide:
- Mitigation of magnetic induction generated by transformers
- Reduction of the safety distance required by regulations
- Possibility of installation in urban spaces and public areas
The result is an MV/LV substation where the magnetic field is effectively shielded in all directions and compliant with legal limits, with external induction values maintained within safe levels (< 3 µT for projects up to 1000 kVA, subject to specific feasibility studies).
Why choose a zero D.P.A. substation
✔ Guaranteed compliance with magnetic field exposure limits
✔ Maximum safety for the population and operators
✔ Reduction of regulated safety distances
✔ Certified and documented measurements by competent authorities
✔ Results tested across numerous projects throughout Italy
Key advantages of zero D.P.A. substations
Reduction of electromagnetic impact
Zero exclusion zone substations are designed to ensure that the external magnetic field complies with regulatory limits, allowing the absence of mandatory safety zones around the shielded substation.
Installation near sensitive areas
Thanks to the shielding, substations can be installed in urban areas, close to residential buildings, parks, schools and homes, without the need for extended safety distances.
Certified measurements and rigorous testing
Each shielded substation is accompanied by certified measurements carried out using protocols agreed with regulatory bodies (such as ARPA and USL), across multiple measurement points to ensure reliable and verifiable results.
Optimized electrical layout
In addition to shielding, the design expertise of the G-iron team includes optimization of the internal electrical layout to maximize magnetic field mitigation.
Information request
Contact us for information about delivery, production and installation of our shielding solutions.
Testing and warranty certification
