Epro Gallspach GmbH stands for high accuracy measurement systems and products for power distribution in high voltage with a high durability. We distinguish ourselves for flexibility and customer orientation. We are not producing mass products, our high accuracy, innovative and customized Systems are used in international laboratories, institutes and HV test bays all over the world. EPRO's standard transformers offer the world´s highest accuracy and are used in lots of national metrological institutes like PTB Germany, INMETRO Brazil, VMI Vietnam and many more. Our high accuracy measurement System TRAFO TEST is built completely modular to reach a maximum in flexibility combined with high accuracy. It´s the first full automatic transformer test system what is approved by PTB Germany as a full system. Our latest development is the ITTD Series. Tan Delta measurement of insulation materials has never been this easy, fast and comfortable. We are ISO 9001 certified and calibration authority to ISO 17025 Our product range includes: + Test Bay Equipment (Test Transformers, Standard Current and Voltage Transformers, Mobile Solutions, high current measuring devices) + Full automatic Casting Plant for Epoxy Resin Vacuum Casting + Feed In Transformers (Audio Frequency Feed in Transformers, Audio Frequency Suppressors, Resonance Circuit Facilities) + Toroidal Core Current Transformers + Measurement Systems for Transformers (Trafo Test Compact and Premium) + Measurement Systems for Insulation Materials (ITTD and Insulation Test Premium) + Versatile C Tan Delta Testers (Easy TD - C and TD Testing) + Calibration Service (we are accredited calibration authority according to ISO 17025 standard for Voltage and Current Transformers (Accuracy Measurement