Magnetic FieldShielded Trunking


High voltage power cables, transformers and bus-bars all generate electromagnetic fields (EMF). The greater the current in these devices the more EMF they will emit. With a higher demand for power within modern buildings, the resulting emissions are becoming larger and larger. European emission standards limit the exposure of these magnetic fields to the following levels:

100µT – for public exposure (example- heart pacemaker protection)
3.75µT – for EMC equipment limits
0.4µT – for permanent occupancy or long-term exposure

VLF/ELF Magnetic field shielded containment / trunking / ductwork for EMF suppression of high current cables, risers and bus-bars.


50Hz Shielding - Global EMC

50 Hertz

Shielding of high current cables typically LV and HV mains feeder cables that are emitting high levels of EMF.

Magnetic Field Shielding - Global EMC

Magnetic Field

Optimised shielding for power frequencies (50/60 Hz) to mitigate harmful levels of magnetic fields from being exposed to the general public.

Building Shielding - Global EMC

Building Shielding

Suitable for industrial, commercial and large residential installations. Providing conformity to long-term public exposure limits of EMF.

Magnetic FieldShielded Trunking


High current cables and bus bar systems cause significant amounts of magnetic fields.

The level of field is dependent on the amount of current carried at any particular time.

When the current load changes through equipment cycling and equipment being turned on/off then the fields will change.

These magnetic field emissions can cause problems in two ways:

• The field limits – for EMC the limit is 3.75uT
There is also a recommendation based on a child leukaemia report: 100uT max for public spaces and 0.4uT max for long exposure and residency.

• Changing fields – some sensitive equipment such as TEM machines/EEG equipment/e-beam machines cannot tolerate
changing magnetic fields and still work at optimum accuracy

High Magnetic Permeability


The Global EMC ARMADILLO shielded containment system attenuates the field by a ratio of circa 10:1 so as to help attenuate the magnetic flux emanations via use of 3mm thick high magnetic permeability materials and a high conductivity design.

Size (mm) Size No.
50mm x 50mm Size 1
100mm x 100mm Size 2
150mm x 100mm Size 3
300mm x 125mm Size 4 (Riser)

Notes:
• The lids are easily removed and re-installed as ‘push on’.
• There is a retaining lanyard for each lid.
• The lids can have heat dissipation slots or can be solid.
• Sizes 1, 2 & 3 have a full range of transitions/reducers.

Transitions To Suit Section Part No.
2m Containment Lengths 50mm x 50mm AR-CL-1
2m Containment Lengths 100mm x 100mm AR-CL-2
2m Containment Lengths 100mm x 150mm AR-CL-3
2m Containment Lengths 300mm x 125mm AR-CL-4
Transitions To Suit Section Part No.
Flat Tee 50mm x 50mm AR-T-1
Flat Tee 100mm x 100mm AR-T-2
Flat Tee 100mm x 150mm AR-T-3
Transitions To Suit Section Part No.
90º Bend Face Lid 50mm x 50mm AR-BF-1
90º Bend Face Lid 100mm x 100mm AR-BF-2
90º Bend Face Lid 100mm x 150mm AR-BF-3
Transitions To Suit Section Part No.
90º Bend Outside Lid 50mm x 50mm AR-BO-1
90º Bend Outside Lid 100mm x 100mm AR-BO-2
90º Bend Outside Lid 100mm x 150mm AR-BO-3
Transitions To Suit Section Part No.
90º Bend Inside Lid 50mm x 50mm AR-BI-1
90º Bend Inside Lid 100mm x 100mm AR-BI-2
90º Bend Inside Lid 100mm x 150mm AR-BI-3
Transitions To Suit Section Part No.
45º Bend Face Lid 50mm x 50mm AR-45-F-1
45º Bend Face Lid 100mm x 100mm AR-45-F-2
45º Bend Face Lid 100mm x 150mm AR-45-F-3
Transitions To Suit Section Part No.
45º Bend Outside Lid 50mm x 50mm AR-45O-1
45º Bend Outside Lid 100mm x 100mm AR-45O-2
45º Bend Outside Lid 100mm x 150mm AR-45O-3
Transitions To Suit Section Part No.
4 Way Transitions With Face Cover Only 50mm x 50mm AR-4W-1
4 Way Transitions With Face Cover Only 100mm x 100mm AR-4W-2
4 Way Transitions With Face Cover Only 100mm x 150mm AR-4W-3
Transitions To Suit Section Part No.
End Covers 50mm x 50mm AR-EC-1
End Covers 100mm x 100mm AR-EC-2
End Covers 100mm x 150mm AR-EC-3
Transitions To Suit Section Part No.
Spare Connection Saddles 50mm x 50mm AR-S-1
Spare Connection Saddles 100mm x 100mm AR-S-2
Spare Connection Saddles 100mm x 150mm AR-S-3
Transitions Part No.
Reducer AR-R-1/2
Reducer AR-R-2/3

Disclaimer


All images are for illustration purposes only and Global EMC reserve the right to change the products aesthetics.

The information presented is subject to change and is true and complete to the best of Global EMC’s knowledge.
Global EMC disclaim any liability in connection with the use of this information.