MiCOM P632
Current-Measuring Inputs
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When connecting the system transformers, it must be ensured that the secondary nominal currents of the system and the device correspond.

graphics/symbols/Warning.png WARNING

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The secondary circuit of live system current transformers must not be opened! If the secondary circuit of a live CT is opened, there is the danger that the resulting voltages will endanger personnel and damage the insulation.

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For pin-terminal connection devices, the terminal block for system current transformer connection is not a shorting block! Therefore always short-circuit the system current transformers before loosening the threaded terminals.