Current Interface Module (CIM)
The Current Interface Module (CIM) measures and digitizes the three phase currents supplied by the secondary windings of a conventional current transformer (CT). The digitized signals from the CIM contain all information of the original secondary currents over their full dynamic range.
Wide range measurements
Where the value range is defined as 1 mA/sec to 500 A/sec. The guaranteed accuracy is defined from 10 mA/sec to 300 A/sec. Due to the extreme wide value range, the CIM is equipped with two input cores per phase. The first (M) core is called the measurement input and the second core (P) is called the protection input.
The CIM consists of:
- Three phase current inputs.
- Two ports of 100Base-FX Fast Ethernet with ST connectors for optical fiber with one strand for transmit
- Power supply capable for wide input AC and DC voltage range
- Status LED.