The moving parts of the machine that come down to charge the bus were made by some Italian company, I think. And some of the electric parts that raise the power to the right amount were built by a Romanian company.

We did have capacitors arc and blow up once. Also, the charger itself arced and burned a hole in the metal where the bus parts and pantograph parts made the #-shaped contact.

Before designing electronics, the electrician in charge of the project tried to get a readymade system from ABB. They called him 9 months later to talk about it and he replied "Don't need it anymore. We built our own." And they were like "What do you mean, you built your own?!" 😄