Jea48,
Just as well you persisted. I must apologize. I was quite wrong, because I mainly used transformers the other, safer way around, namely using 50Hz transformers on 60hz. Only in one instance I used a transformer the other way around for about a year or so and did not run into any trouble though. Not that this would prove your warning wrong. But as Ngjockey and you point out, the situation is more comple than I naively thought.
Just as well you persisted. I must apologize. I was quite wrong, because I mainly used transformers the other, safer way around, namely using 50Hz transformers on 60hz. Only in one instance I used a transformer the other way around for about a year or so and did not run into any trouble though. Not that this would prove your warning wrong. But as Ngjockey and you point out, the situation is more comple than I naively thought.