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ADT Compact 2003

ADT Compact 2003: Feedback and Technical Support

By means of the remote control and monitoring of ADT dehydrator the software OPTIM-AD enables a permanent optimization of the transformer dehydration process.

Regardless of how efficient any method of oil dehydration might be - the first rule of the dehydration of transformers is always:

water removal from cellulose materials of the transformer has to be safe and effective.

Any on-line transformer dehydration is ultimately governed by slow diffusion of the moisture from cellulose in the oil and this process can be accelerated only by a significant increase in temperature. But the second basic rule of any on-line dehydration lowers the effort since:

high transformer temperature --> high water content in oil --> high separation rate


--> low dielectric strength of oil --> low immediate reliability of transformer

In order to avoid the lowering of the immediate reliability of the transformer, it is necessary to tune at least two antagonistic criteria in the whole process of dehydration :

  • max. separating efficiency of dehydrator (max. water removal rate)
  • dielectric strength of oil - has to be maintained or improved

To achieve this target the ADT Dehydrator can be programmed directly (manually) via terminal of PCD 1 or better remotely with the use of suitable PC or lap-top on the basis of previously measured values.

This way is possible to monitor and optimize the dehydrator function and to optimize the whole dehydration process, by strictly controlled warming-up of the transformer.

The figure on the left shows the structure of separator control systems and both connections between PCD1 and lap-top or remote PC.

Communication between the PCD1 and both computers - remote user PC and lap-top is provided by the firmware of the ARS Altmann Systems. For detailed information See Remote Control Manual 2003.

The ARS expert can then not only directly help by optimizing the parameter setting of ADT device and the transformer, but also by the evaluating and interpreting the monitored results. The interactive remote learning process warrants then a easy introduction of any ARS customer into a new solution of the moisture problem.