Bächli is a Swiss tech company that specialises in the development and production of electrotechnical components. The company’s range of products comprises highly specialised transformers, chokes and winding products of all kinds that are used in differing industrial products and especially in the rail sector.
The specialists from Bächli make their expertise available to their customers over the entire product life-cycle and ensure that Bächli makes a sustainable and decisive contribution to the success of its customers.
In years of close cooperation with customers is the need for Maintenance-free inductive components always has been an issue. This is the reason why bächli has developed a wide range of theoretical and practical knowledge in this field.
If we look at the costs of a normal regional train over its entire life cycle, the following can be said in general terms. The cost of maintaining this regional train is 2 to 3 times the cost of purchasing it. The average lifetime of passenger trains is generally 30 years.
Low maintenance costs are therefore an important selling point for train manufacturers. Train manufacturers have to take responsibility for their suppliers with regard to the availability of spare parts and maintenance regulations.
As a supplier, we therefore also have a responsibility to develop and manufacture safe and low-maintenance transformers and reactors. Ideally, our components should even be maintenance-free.
Our inductive components (transformers and reactors) are among the main technical components that ensure the safe operation of a train. They are used in the main circuit and in auxiliary circuits. In the main circuits, they are line chokes for DC networks and resonance chokes for AC networks. HBU transformers, isolating transformers and sinusoidal filters are used for the auxiliary circuits.
The transformers and reactors are resting components, which means that they have no moving parts that can wear out. Due to their robust construction, these components require very little maintenance.
Maintenance essentially consists of cleaning the insulation and checking the insulation electrically. To put it bluntly, you build the transformer into the box and then you can forget about this transformer. It will do its job reliably for a long time.