| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology, in which a current measuring system of a switch includes a current sensor for detecting a current flowing through a normal branch switch, and even when a dedicated switch having a large current capacity forms a plurality of plug terminals for each polarity so that the current flowing through each terminal is reduced, the current sensor is used as it is, and the detection of the current value flowing through this dedicated switch having a large current capacity is made possible.SOLUTION: A current measuring system of a switch includes calculation means arranging a plurality of bus line bars 6a, 6b, and 6c on a secondary side of a main switch 2, and at least one or more bus line bars from among them are provided with a plurality of branch bars connected with a primary side terminal of the switch. Each branch bar is installed with a current sensor for measuring the current flowing through the switch connected to the branch bar, and when the switch is a switch 4 of a large capacity type having a plurality of terminals for one polarity, the measurement value of the current sensor arranged in the branch bar connected with this switch of a large capacity type is processed in a summed up manner.SELECTED DRAWING: Figure 1 |
