METHOD AND APPARATUS FOR CHECKING VALIDITY OF VOLTAGE TRANSFORMER, ELECTRIC SWITCH COMPRISING THE SAME, COMPUTER PROGRAM FOR CHECKING VALIDITY OF VOLTAGE TRANSFORMER, AND PRODUCT THEREOF

摘要

PPROBLEM TO BE SOLVED: To provide a method, a computer program, a product thereof, and an apparatus for appropriately and simply monitoring a voltage transformer in an electric switch, as well as a switch comprising the apparatus. PSOLUTION: The validity check for the voltage transformer includes a step, where a current topology of the switch is detected by an apparatus control system based on a present electric connection of primary equipment and a current position of a switch, a step for discriminating at least one partial region of the switch, comprising at least two voltage transformers that are in DC current relation based on the current topology, a step where the voltage transformer is divided into groups, based on a measurement signal in the partial region so that all the measurement signals agree with each other in the frame of allowable measurement precision within each group, and a step where a display signal or an alarm signal is formed by the apparatus control system, if at least one group exists. PCOPYRIGHT: (C)2004,JPO