Transformers
Weather influences as well as constant load changes of transformers cause temperature fluctuations and thus a pressure equalization with the environment.
The moist ambient air drawn in during cooling leads to hydrolysis of the cellulose paper in the transformer and thus to a reduction in its degree of polymerization. GIEBEL dehumidifiers protect the transformer by effectively drying and filtering the humid supply air.
To prevent damage caused by condensation water, the use of a dehumidifier is an indispensable measure. The incoming air is dried and thus a strong reduction of the water content and the dew point is achieved. In addition to a mechanical valve system and an air filter element, these silica gel dryers make use of the regenerative capacity of the desiccant used.
Downloads
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Videos
FORMATION OF WATER IN THE Transformer
FUNCTIONAL TRANSFORMATOR - HUMIDITY AND DEW POINT
DAMAGE CAUSED BY WATER
Consequences:
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AVOIDANCE OF WATER IN THE TRANSFORMER
References
SELECTION OF A STANDARD ADSORBER
Adsorber VV-RVUsage Materials Substance Valves Rechargeable Usage according ATEX 2014 Offhore suitable Amount Adsorbents |
Adsorber TB-RVUsage Materials Substance Valves Rechargeable Usage according ATEX 2014 Offhore suitable Amount Adsorbents |
Adsorber TM-RVUsage Materials Substance Valves Rechargeable Usage according ATEX 2014 Offshore suitable Amount Adsorbents |
DETERMINATION OF SIZE
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DIN 42562![]() |
DIN 42567A![]() |
DIN 42567B![]() |
DIN 42567C G 1“ / G ¾“ / G ½“ ![]() |
DIN 42562![]() |
DIN 42567C G 1“ ![]() |
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Adsorber |
VV-RV |
TB-RV |
TM-RV |
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Usage |
upright | hanging | |||||
Materials |
Polycarbonate, polyamide, FKM Silica gel Orange |
Aluminium, Polycarbonate, polyamide, FKM Silica gel Orange |
Stainless steel A4, FKM Silica gel Orange |
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Usage according ATEX 2014 |
No | No | Yes | ||||
Use Indoor / below deck | Yes | Yes | Yes | ||||
Use outdoor / on land | Yes | Yes | Yes | ||||
Use on deck / offshore |
No | No | Yes | ||||
Power/ oil volume |
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0 – 5 MVA up to approx. 2.500l oil |
VV-RV 3M | TB-RV 3M | TB-RV 3M | TB-RV 3M | TB-RV 3M | TM-RV 3M | TM-RV 3M |
5 – 10 MVA up to approx. 5.000l oil |
VV-RV 3L | TB-RV 3L | TB-RV 3L | TB-RV 3L | TB-RV 3L | TM-RV 3L | TM-RV 3L |
10 – 30 MVA up to approx. 15.000l oil |
TB-RV 5M | TB-RV 5M | TB-RV 5M | TB-RV 5M | TB-RV 5M | ||
30 – 60 MVA up to approx. 30.000l oil |
TB-RV 5L | TB-RV 5L | TM-RV 5L | ||||
60 – 100 MVA up to approx. 50.000l oil |
TB-RV 5XL | TM-RV 5XL |