Abstract: A covering for a machine for producing or processing a fibrous web, in particular a paper or tissue web. The covering includes a basic covering which has a web-contacting upper side and an underside, and a plurality of polymer elements. The polymer elements are welded onto the upper side and at least some of the polymer elements are in the form of yarn-shaped and/or tape-shaped polymer elements.

Abstract: A covering for a machine for producing or processing a fibrous web, in particular a paper or tissue web. The covering includes a basic covering which has a web-contacting upper side and an underside, and a plurality of polymer elements. The polymer elements are welded onto the upper side and at least some of the polymer elements are in the form of yarn-shaped and/or tape-shaped polymer elements.

Abstract: A method for testing multiple spatially distributed protective devices of an energy supply network. Each of the protective devices is configured to, in the event of a fault occurring in the energy supply network, isolate the fault in the energy supply network. The method comprises: producing an initial test sequence; outputting of the test sequence to the protective devices; detecting outputs of the protective devices that the protective devices output on the basis of the test sequence; analyzing the outputs and generation of inputs for the protective devices depending on the outputs. If the inputs are not part of the test sequence, these inputs are incorporated into the test sequence and the outputting step proceeds. Otherwise, all outputs of the protective devices are evaluated. Each test sequence comprises inputs in the form of process variables of the energy supply network for at least one of the protective devices.

Abstract: The present invention relates to a method for testing multiple spatially distributed protective devices (SE1, SE2) of an energy supply network (3). Each of the protective devices (SE1, SE2) is configured so as to, in the event of a fault (5) occurring in the energy supply network (3), isolate the fault (5) in the energy supply network (3). The method comprises the following steps: a: production of an initial test sequence. b: outputting of the test sequence to the protective devices (SE1, SE2). c: detection of outputs of the protective devices (SE1, SE2) that the protective devices (SE1, SE2) output on the basis of the test sequence. d: analysis of the outputs and generation of inputs for the protective devices (SE1, SE2) depending on the outputs. If the inputs are not part of the test sequence, these inputs are incorporated into the test sequence and step b is proceeded with, while otherwise step e is proceeded with. e: evaluation of all outputs of the protective devices (SE1, SE2).

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 removably 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.

Abstract: Test system and test method for testing the operability of test samples (7). A selection can be made in a user-specific manner from a plurality of test modules (2a-2c) which are made available, which can be assembled together to a desired test specification. A control module (1) carries out the overall test corresponding to the user-specific test specification, and controls individual selected test modules (2a-2c) in the desired sequence in correspondence to this test specification. Advantageously, there is produced automatically a test report on the test results of the individual selected test modules (2a-2c), which reports in particular embedded in the user-specific test specification.

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.

Abstract: Test system and test method for testing the operability of test samples (7). A selection can be made in a user-specific manner from a plurality of test modules (2a-2c) which are made available, which can be assembled together to a desired test specification. A control module (1) carries out the overall test corresponding to the user-specific test specification, and controls individual selected test modules (2a-2c) in the desired sequence in correspondence to this test specification. Advantageously, there is produced automatically a test report on the test results of the individual selected test modules (2a-2c), which reports in particular embedded in the user-specific test specification.