We are curious! Where is our oldest still functioning test system?

Recently, a transformer from the manufacturer Koch & Sterzel dating back to 1920 found its way back to its origin in Dresden. We were very pleased about this.
Since 1904, pioneering high-voltage testing and measurement technology has been developed and manufactured at the Dresden site. Initially by Koch & Sterzel, after World War II by TuR (Transformatoren und Röntgenwerk), since 1990 by Siemens, and since 1994 by HIGHVOLT.

Although we have records of when and to whom we have supplied test systems, we do not always know how long these test systems have been in operation.

We would be very pleased if you could give us information about the longevity of your test system, whether it comes from Koch & Sterzel, TuR, Siemens or HIGHVOLT. Please send us your details using the keyword "test system" to