Patent application number | Description | Published |
20100066376 | METHOD FOR TESTING A PROTECTIVE DEVICE, A PROTECTIVE DEVICE, AND TEST DEVICE - A method for testing a protective device as well as a correspondingly configured protective device and test device are provided. | 03-18-2010 |
20110204899 | METHOD OF CALIBRATING A PARTIAL DISCHARGE MEASURING DEVICE - This invention concerns a method and devices for calibrating a partial discharge measuring device and for locating faults on cables. In the method, calibration signals, which can include a band-limited white noise, are used with a periodically repeated signal course. By averaging over a predetermined period duration (T) of the calibration signal, it is possible, in the case of a partial discharge measurement, to recalibrate the measuring device continuously during the measurement, and additionally on cables to determine the fault location with great precision. | 08-25-2011 |
20110251806 | METHOD OF MONITORING A POWER TRANSMISSION LINE AND MEASURING DEVICE - A method and a measuring device for monitoring a power transmission line are disclosed. Measured data are acquired by means of the measuring device at a measuring point of the power transmission line and are coupled in to said power transmission line to transmit the measured data via the power transmission line to a measured data acquisition device. | 10-13-2011 |
20130300423 | MEASURING DEVICE FOR CHECKING AN ELECTIRCAL CIRCUIT BREAKER - Measuring device for checking an electrical circuit breaker includes a current generating unit designed to generate a measurement current for a continuity measurement of a switching contact of the circuit breaker. The measuring device furthermore includes a measuring unit for registering a measurement signal at the circuit breaker, an energy supply unit for supplying a control drive of the circuit breaker with electrical energy, and a control unit, which has a timer. The control unit is able output to the control drive, via the control output, a signal for opening or closing the circuit breaker, and to determine a time-based switching behaviour of the circuit breaker in dependence on the measurement signal. Further, the control unit is designed, in the case of the circuit breaker being closed, to determine the resistance of the switching contact in dependence on the measurement current and the measurement signal. | 11-14-2013 |
20130300424 | MEASUREMENT OF A RESISTANCE OF A SWITCHING CONTACT OF AN ELECTRICAL CIRCUIT BREAKER - The present invention relates to a measuring device ( | 11-14-2013 |
20130307558 | TEST DEVICE, TEST SYSTEM AND METHOD FOR TESTING A POWER ENGINEERING TEST OBJECT - In order to test a power engineering test object ( | 11-21-2013 |
20140043035 | METHOD OF LOCATING FAULTS ON A CABLE - This invention concerns methods and devices for calibrating a partial discharge measuring device and for locating faults on cables. In the method, calibration signals, which can include a band-limited white noise, are used with a periodically repeated signal course. By averaging over a predetermined period duration (T) of the calibration signal, it is possible, in the case of a partial discharge measurement, to recalibrate the measuring device continuously during the measurement, and additionally on cables to determine the fault location with great precision. | 02-13-2014 |
20140055142 | METHOD AND APPARATUS FOR THE MEASUREMENT OF A RESISTANCE OF A SWITCHING CONTACT OF AN ELECTRICAL CIRCUIT BREAKER - An apparatus and method for the measurement of a resistance of a switching contact of an electrical circuit breaker. A first resistance value across the circuit breaker is determined while the circuit breaker is grounded at both sides and the switching contact is closed. Further, a second resistance value across the circuit breaker is determined while the circuit breaker is grounded at both sides and the switching contact is open. The resistance of the closed switching contact is then determined based on the first resistance value and the second resistance value. | 02-27-2014 |