WARNING!
• Make sure the transformation ratios and the power of the CTs are correctly rated. If
the rating of the CTs is not right (overrated), then the normal operational conditions
may not be recognized. The pickup value of the measuring unit amounts approx. 3%
of the rated current of the device. Also the CTs need a current greater than approx
3% of the rated current to ensure sufficient accuracy.
Example: For a 600 A CT (primary current) any currents below 18 A cannot be
detected any more.
• Overloading can result in destruction of the measuring inputs or faulty signals.
Overloading means that in case of a short-circuit the current-carrying capacity of the
measuring inputs could be exceeded.
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EMR-3MP0
2 Hardware
2.2 EMR-3MP0 – Installation and Wiring
