Design, construction and production of a 10kV relay test system with integrated Faradaycage and PD measurement technology. The test system is characterized by a particularly low interference level of 0.2 pC at 10 kV nominal voltage. The system was designed to reliably detect PD levels of 1pC. All test programs can be carried out manually or fully automatically with this system. The system is characterized in the range up to 2kV by a control accuracy of the secondary high voltage of +-2V.