Systron PowerShield® transformer compact shields:
Description
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With the Systron PowerShield® transformer compact shielding magnetic fields of Transformers are limited. The compact Shield was developed in cooperation with EWZ Zurich so the installation limit value, AGW, of transformers in accordance with the regulation on non-ionising radiation, NISV, can be met. |
Isoline 630kVA
Isoline 630kVA, 900A, 1µT - curve
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Rot = without shielding, black = with transformer compact shielding
Source: electrosuisse Fehraltorf
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Systron PowerShield® Surface shields:
Description
Systron PowerShield® - Surface shields
![]() Surface shielding in transformer room
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Systron PowerShield® - Surface shields are used to protect people or equipment by reducing low-frequency magnetic fields such as the ones caused by transformers, NS distribution, medium-voltage equipment and wires or electrical devices. Systron PowerShield® - Surface shields are used to meet (legal) limits or, in terms of prevention, keep field exposure on people as small as possible. Systron Power Shield® Surface shields are equally used for small and large areas. The Systron Power Shield® shielding system consists of sandwich panels with a combination of magnetic and electrically conductive metals and is typically used in low-frequency magnetic fields with frequencies of 16.7Hz, 50Hz up to approximately 1000Hz. The shield panels are mounted on the floor, on walls or ceiling. |
Shielding, Example
Proof of the effect of the surface shield system via a transformer station.
![]() Red: Without shielding, 20 cm height above ground
Black: With shielding, 20 cm height above ground |
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System:
Transformer station in the basement, on the floor with a surface shield on the bottom of the above floor. On this floor office workstations (operating personnel) are being installed. The aim of these measures was to reduce the values during normal operation current as best as possible and if possible to keep them under the AGW of 1µT.
Red curve:
Measured values 20cm height above ground, in a distance of 1 m, measured on a line. Maximum measured value: 14.6µT
Black curve:
Measured values 20cm height above ground, in a distance of 1 m, measured on a line. Maximum measured value: 0.4µT
Result:
A reduction of >factor 30 has been achieved with the shielding*.
*The current was also measured during the measurements. The values in the diagram are converted to the same power and thus are comparable.
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Systron PowerShield® Cable tray shielding:
Description
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Systron PowerShield® Cable tray shielding are being used for field reduction on cable trays. This type of shielding is based on the proven Systron PowerShield® composite panels. The elements are custom made. Use: Cable trays, power rails, devices |