Transformator (BLIX)

Frequency of maintenance depends on the environment and what is considered necessary. Cleaning on once a year will normally ensure safe and continuous operation.

Filling of oil on hermetically sealed transformers should preferably be done by the manufacturers, who have equipment for vacuum filling. This is especially important if the transformer has a gas guard, in which case the relay may give an unwanted alarm signal due to the fact that air may remain in the transformer. However, if the repair needs to be done elsewhere, follow the instructions below. Filling of oil on hermetically sealed transformers is done through the filling pipe. HV bushings are also filled with oil, if these are not of the plug type. Oil filling must be carried out at 20-30 ° C.

Lift and move the transformer using lifting equipment attached to a lifting sleeve or to a lifting point under the trolley. The lifting equipment must be mounted on the same side as the filling pipe or the gas guard so that the air, which is trapped under the lid, can escape.

Replace the 1 "plug with" gland "and tighten well. If oil has been drained from the transformer so that the windings have been in contact with air, the transformer must be filled in a vacuum or left for at least 24 hours before applying voltage or performing a voltage test. If the insulation or windings are changed, these must be dried for a minimum of 24 hours at 90 - 100 ° C before the transformer is filled with oil.

If the complete transformer is placed in an oven for drying, it is recommended that it last for 48 hours at 90 - 100 ° C. If the peak temperature is below 60 ° C when the transformer is opened, or if there is a leak in the transformer, the tank will draw in air due to vacuum.

The transformer is filled at 35 - 40 ° C at the factory.

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Frequency of maintenance depends on the environment and what is considered necessary. Cleaning on once a year will normally ensure safe and continuous operation.

Filling of oil on hermetically sealed transformers should preferably be done by the manufacturers, who have equipment for vacuum filling. This is especially important if the transformer has a gas guard, in which case the relay may give an unwanted alarm signal due to the fact that air may remain in the transformer. However, if the repair needs to be done elsewhere, follow the instructions below. Filling of oil on hermetically sealed transformers is done through the filling pipe. HV bushings are also filled with oil, if these are not of the plug type. Oil filling must be carried out at 20-30 ° C.

Lift and move the transformer using lifting equipment attached to a lifting sleeve or to a lifting point under the trolley. The lifting equipment must be mounted on the same side as the filling pipe or the gas guard so that the air, which is trapped under the lid, can escape.

Replace the 1 "plug with" gland "and tighten well. If oil has been drained from the transformer so that the windings have been in contact with air, the transformer must be filled in a vacuum or left for at least 24 hours before applying voltage or performing a voltage test. If the insulation or windings are changed, these must be dried for a minimum of 24 hours at 90 - 100 ° C before the transformer is filled with oil.

If the complete transformer is placed in an oven for drying, it is recommended that it last for 48 hours at 90 - 100 ° C. If the peak temperature is below 60 ° C when the transformer is opened, or if there is a leak in the transformer, the tank will draw in air due to vacuum.

The transformer is filled at 35 - 40 ° C at the factory.