User Manual

EMpro - multifunctional energy measuring devices for DIN rail mounting
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PHOENIX CONTACT 109357_en_00
3.2 Installation
DANGER: Risk of electric shock
If the device is disconnected, the secondary side of the relevant current transformers must
be short circuited.
Install the current sensors and corresponding measuring devices only when the power
supply of the system is disconnected.
When the current transformer is operated with an open secondary circuit, hazardous
voltages may occur at the secondary terminal blocks.
When measuring by means of current transformers or Rogowski coils, the accuracy is
greatly influenced by the quality of the current sensors used.