LDTouchControl Applications The PLC-based Control Unit "LDTouchControl", combined with an appropriately dimensioned HV Power Unit, is used in fully automatic control arrangements of HV test systems/HV test transformers, where the voltage adjustment is performed with a classical regulating transformer at power frequency. The advanced touch panel screen HV control unit provides in combination with a Power Unit the following features: » Selection of operation mode: manually or fully-automatic » Two versions: power frequency and variable frequency version » Entering of global limits for primary and secondary currents and voltages (password protected by administrator) » Manually mode: Increasing and decreasing of the output voltage via pressing the push-buttons "Up" and "Down"; regulating speed infinitely adjustable via soft-keys; Adjustable software limits for secondary current and voltage within the administrative pre-settings. » Automatic mode: The control system is increasing the voltage via a linear ramp to a pre-defined target voltage value. It holds this voltage for the pre-defined dwell time and sut-down than automatically. Ramp time, target value and dwell time can be adjusted via touch-screen display by the customer. » Display language in English or German IMPORTANT ADVANTAGE: The HV Control Unit LDTouchControl is (together with the Power Unit) qualified for the design of HV test systems in accordance with DIN EN 50191. Its emergency stop and safety circuits meet the requirements of Performance Level d/e according to standard EN ISO 13849-1 and up to Category 4 according to standard EN 954-1 respectively. » Touchpanel 7 inch TFT-widescreen display » Connection for external safety interlock Doble Lemke GmbH Zschoner Ring 9, 01723 Kesselsdorf / Dresden Germany www.doble-lemke.eu Doble Lemke AG Kaiserstrasse 9, 4310 Rheinfelden Switzerland www.doble-lemke.eu

LDTouchControl » Push-buttons to switch HV Off, HV Ready and HV On » EMERGENCY STOP push button » Push buttons "Up/Down" for increasing and decreasing of the HV voltage manually » Control of an automatic grounding unit » Measuring uncertainty of the primary voltage measurement: Uprim < 2% in the range of 10 ... 100% of the nominal value » Measuring uncertainty of the primary current measurement: Iprim < 2% in the range of 10 ... 100% of the nominal value » Measuring uncertainty of the secondary voltage measurement via HV proportional voltage signal (appr. 10 Vpp = actual value) in accordance...