Up to five (possibly more) Micro CTs may be connected to a single AUX channel. The limitation is that the total measured amperage does not exceed 80A at any one time. Moderately exceeding 80A will not damage the ECM-1240, however it will result in lower than expected readings. Is there anything that can be done to monitor amperage greater than 80A on a given Aux channel? Yes, there are a few options:
- Use Micro-100 CTs
- Use multiple Micro-40 or Micro-80 CTs and adding an burden resistor.
Both of the above options will extend the maximum Aux channel current to 160A for the total of all CT amps.
Posted in: Loads and Current Transformers (CTs)