Description
The TWA standard series instruments are designed for six-winding resistance measurement and simultaneous three phase on-load tap changer analysis of both the primary and the secondary transformer windings (provided by the TWA40 model). This is performed with a one single-step cable setup, with test currents of up to 40A. Each transformer configuration has a special measurement algorithm which is optimized for the fast stabilization of test results. The TWA instruments generate a true DC ripple-free current. Both the injection of the current and the discharge of energy from the magnetic circuit are automatically regulated.
– Resistance measurement of all tap positions in all six windings performed in a single test
– True three-phase on-load tap changer dynamic resistance measurement
– Extremely quick measurement, single-step cable setup
– Rapid automatic demagnetization
– Fully automated test mode
– Built-in tap changer control unit
– Temperature measurement channel
Data sheet
