Transformer switching relays
From simple single-phase transformers to large three-phase transformers, the areas of application for our transformer switching relays are very varied due to the different types of transformers and their different loads. By using the soft switch-on method developed by us, one or more single-phase transformers can be switched on in no-load operation or under load without inrush current.
Safe switching
The TSRL is our go to product for switching of various single-phase transformers. With its soft starting procedure, the relay activates one or several single-phase transformers in no-load operation or under load without inrush. This procedure avoids the inrush current and does not only limit it.
Using the TSRL, the transformers can be fast fused to their nominal current on the primary side and thus can be protected ideally. Futhermore transformers can be designed cost-efficiently.
Easy to install
The TSRLF is a control unit for an external control element to arrange a transformer switching relay. It is usable for fast switching and to switch single-phase transformer
with high power. External thyristors or semiconductor relays are used as control elements.
Using the soft starting procedure, the connected control element is actuated in a way that one or several single-phase transformers can be operated in no-load operation or under load without an inrush current. This can be used for welding transformer with more than 32 A, for example.
High performance switching relays
The TSRD is our product for switching of various three-phase transformers. For example for isolating transformers in special-purpose vehicles with rated current up to 50 A. For operation of the TSRD an external bypass contactor is needed.
The soft starting procedure enables it to switch on either one three-phase transformer or three single-phase transformers in no-load-state or a loaded state without inrush current. Again, due to our soft starting procedure the inrush current is avoided, not only reduced.
Certifications
Our design expertise includes meeting a big variety of standards like UL, CE, TUV, VDE, SAA, AS/NZS, CCC & IEC safety standards.
Manufactured in ISO 9001:2015 and ISO 14001:2015 certified facilities.
For medical devices, our transformer switching relays have the option of half-wave failure detection in accordance with EN 61000-4-11.
Fully RoHS & REACH Compliant.
Let's work together!
Whether you have an existing specification or you are at the beginning of the design process, we are here to help.