Portable testing device for testing test-pieces operated at high voltages and/or high currents

Abstract

There is described a fully automatic portable testing device which can be used generally for testing test-pieces to be operated at high voltages and/or high currents, such as current or voltage transducers or transformers for example. For this purpose, the portable testing device comprises a switched-mode power amplifier (3) whose output is connected to a matching transformer (4-7) having a plurality of secondary windings (5-7) which can be changed over. The test-piece on which measurements are to be made is in each case to be connected to the secondary windings (5-7) of the matching transformer. The portable testing device also comprises a control which in particular may have a digital signal processor (8) and/or a controller or computer (9) and which on the one hand controls the power amplifier (3) in a purposive way and preferably also performs an automatic changeover of the secondary windings (5-7) of the matching transformer, in order to generate a desired testing signal. The control (8, 9) also analyses the measurement signals which are set up as a result of a test. In this way a compact and easily transportable tester is made available which is versatile in application.

Dependencies are inferred from the claim text.