Repair and maintenance - GT Service Explorer

Operational improvements

Efficiency
Environment
Flexibility
Power
Reliability

General

Siemens Energy power transformers are characterized by extremely high availability and long service life.
We recommend several selected modules from our service portfolio to ensure that this availability remains consistently high over years and decades and to prevent any unscheduled outages.

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Oil analysis

An important factor for ensuring availability is the condition of the insulating oil.
The condition of this oil determines the extent to which safe, continuous operation of the transformer is possible.
Moisture, degradation products and acids in the oil jeopardize safe operation and also shorten service life.
It is therefore important to regularly check the condition of the oil and to take appropriate action in the event of a decrease in oil quality.

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Onsite repair

In many cases, it is not possible or cost-effective to bring the transformer to one of our manufacturing plants for repair because of the necessary heavy transport.
In these cases we can offer our customers on-site repair.
An individual solution may be elaborated depending on the existing infrastructure.

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Oil drying

If the moisture content of the insulating oil is too high, the use of DRY is recommended.
This system effectively removes moisture from both the insulating oil and from solid insulating materials such as paper, pressboard and plywood.
This increases the dielectric strength of the current-carrying components and counteracts the aging process of the insulating materials.

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Oil regeneration

If the insulating oil contains a high fraction of degradation products and acids, it can be completely regenerated using the SITRAM REG system.
The regeneration process cleans the oil and restores it to the quality level of new oil.
The regeneration process is highly cost-effective, as it is especially time-saving and does not require the transformer to be shut down.

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Diagnostic service

Transformer DIAG provides diagnostic modules for individual transformers and for the assessment of complete installed fleets and transformer populations.
DIAG for transformers suits to electricity companies as well as industrial companies, independent from the manufacturer of the equipment or the age.

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Repair services- overview

Depending on the initial situation, it may be expedient from an economic standpoint to have an older or damaged transformer overhauled at one of our Siemens Energy production locations.
Based on our experience, an overhaul restores transformer availability for an extended time with no restrictions in operating reliability.
There are advantages over the production of a new transformer. An overhaul and restoration are usually significantly more cost-effective and time-efficient.
Our customers also experience significantly shorter outage times.