Transformer oil analysis:

The frequency of transformer oil analysis depends on the health condition of the equipment.

In the absence of apparent faults, Laboratory OKSMAN SERAPHIN recommends an annual analysis. However, it should be noted that each annual analysis may vary according to research needs.

In case of abnormal signs or observed malfunction, the frequency of oil analysis for your at-risk transformer may be increased upon recommendation by experts.

Transformer oil analysis is generally not subject to specific regulation.

HOWEVER: Directives regarding the management of polychlorinated biphenyls (PCBs) in transformers exist in many countries.

In France, it is imperative to detect the presence of PCBs in transformers, in accordance with the French environmental code (Articles R-543-17 to R-543-41). This detection is performed through oil analysis.

In the United States, regulations (40 CFR Part 761) on the management of PCBs are also in effect, establishing standards for their use, handling, storage, transportation, and disposal.

Other countries have implemented equivalent laws and standards to control and restrict the use of PCBs in transformers, as well as to ensure their disposal, thereby minimizing risks to health and the environment.

Furthermore, insurance companies require evidence of regular maintenance, including oil analysis, to ensure coverage of the transformer in case of an incident.

After performing between four and five oil samplings on your distribution transformer, it is generally recommended to check the oil level and refill if necessary. This helps avoid the risk of the transformer tripping due to insufficient oil level.

Be sure to follow the manufacturer's recommendations and the transformer's technical specifications to determine the optimal oil level and properly perform refilling if needed.