The DCVT range of self-powered units provides an isolated DC voltage output for a DC voltage input. The DCVT5U, DCVT5S and DCVT8HV have basic 25V:10V ratio, expandable by the insertion of resistance in series with the input. The DCVT5x types are proof stress tested to 6kV and the DCVT8HV to 10kV. The DCVT5S has an electrostatic screen between input and output while the DCVT6U offers 10V:10V transformation. All units are for unipolar operation and are panel mounted.