T ransformer Measuring Devices Winding Resistance Meters MICRO-OHMMETER MR 8050for highly inductive Test Objects up to 800 MVA With the MR 8050 resistances highly inductive windings of transformers, motors and reactors can be measured. (range 100 mW with 0.01 mW resolution up to 6 kW). The performance of the test objects can be up to 800 MVA or even more. The magnetic loading of a transformer is performed quickly using a high loading voltage (60V). This is important for time critical measurements (cooling curves). The unloading of the transformers core is very fast, very safe, as the energy is total destroyed in the MR 8050. The temperature of the test object can be preset or measured using a PT100 probe. The resistance is calculated for 20°C using the temperature coefficient for copper or aluminium. Technical Data Object connection: Resistance auto range: Max. Current selectable: Resolution: Max. Measuring Error: Max. output voltage / current: Total output power: Max. capacity: Interface: Built-in thermal printer: Environment: Rel.Humidity: Power supply (Mains): Housing: Size and weight: Safety and EMC: 2 current outputs, 4 potential inputs (2 channels) 100mW up to 6000W (autorange) 50mA, 100mA, ...,10A,20A,..., 60A; actual value depends on total resistance 0.01mW e.g. 123.71pW ± 0.1% RDG. ± 0.05 % F.S. 60V pure DC / 60A pure DC max.450VA @ 90 ... 264V mains 800 MVA transformers USB and RS232C 9600 baud (auto switch) Paper 58mm width, easy handling -10° to +50°C working, -25° to +70°C storage max. 95 % not condensing 90...264V, 6.5A PFC ABS rugged case, water proof 490x400x190mm approx. 15 kg CE,IEC-1010-1, EN55011 B,EN61000-3-2.-3, ENV50204 Heat-loss measurements with preset time intervals are possible. The resistance at t=0 (disconnection of load) is shown as result of the internal regression algorithm. Two windings (mostly HV and LV) can be measured simultaneously in DUAL measuring method. The MR 8050 also features automatic tap-changer control for measuring different taps without interrupting the measuring current. - 2 channels for DUAL measurements - Measuring time very short due very fast uploading - Discharge time typ. 1/10 of uploading time - Heat - loss measurements with regression algorithm - LCD-Display with 240 x 128 pixels with backlight - USB standard and RS232C 9600 baud - PT100 connector for PT100 temperature probe - Tap changer connector for automatic tap control - Warning system connector for separate warning light - Internal test storage for up to 1000 measurements - Inputs full protected against static and transient voltages - Wide current ranges from 50mA to 60A Questions? +49 (0)3328 / 3179 - 0 (phone) +49 (0)3328 / 3179 - 10 (fax) Here you will get technical assistance as well as complete information regarding features, prices, shipment and reselling. [email protected] www.ohmmeter.de Made in Germany SCHUETZ MESSTECHNIK GMBH, Rheinstrasse 7a, D-14513 Teltow 3. Edition June 2014. Changes are subject to change without notice.