| 摘要 |
The invention relates to a plug-in unit assembly comprising instrument transformers, a case assembly ( 1 ) comprising a connector assembly ( 10 ), and a plug-in unit ( 2 ) comprising at least one instrument transformer ( 3, 4 ) and configured to be connected to the case assembly ( 1 ). The instrument transformers ( 3, 4 ) of the plug-in unit ( 2 ) are coded in such a manner that the codings of the current transformers ( 3 ) and the voltage transformers ( 4 ) are different. The connector assembly ( 10 ) of the plug-in unit assembly of the invention is capable of identifying the type of the instrument transformers ( 3, 4 ) and based on their coding when the plug-in unit ( 2 ) is being connected to the case assembly ( 1 ).
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