| 摘要 |
A medium voltage switching device (20) for electrical medium voltage networks, comprising series-connected first and second connecting fields (21, 22) each provided with a switch (24, 25) for connection to the medium voltage network, a third connecting field (23) connected to the connection (26) of the first and the second connecting fields (21, 22) for providing consumers with electric energy. The switching device (20) furthermore comprises means (27) for signalling an excessive current flowing into the third connecting field (23), and control means (28) connected to the switches (24, 25) of the first and the second connecting field (21, 22) and the current signalling means (27), which function to open the two switches (24, 25) in response to the occurrence to an excessive current in the third connecting field (23).
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