Connecting Supply

What you will find in this section:

  1. Schematic for connection types
  2. Related topics

warning signDANGER: 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.

information sign

When measuring by means of current transformers or Rogowski coils, the accuracy is greatly influenced by the quality of the current sensors used.

Schematic for connection types

You can connect the device supply as follows:

  1. Connection L/N (AC)
  2. Connection L/L (AC)
  3. Connection +/- (DC)

Connection L/N (AC)

Connection L/N (AC)
Connection L/N (AC)

Connection L/L (AC)

Connection L/L (AC)
Connection L/L (AC)

Connection +/- (DC)

Connection +/- (DC)
Connection +/- (DC)

  1. Wiring current transformer
  2. Wiring Rogowski coil
  3. Grid types with current transformer
  4. Grid types with Rogowski coil

See also

  1. Mounting

EMpro online documentation
Published/reviewed: 2025-07-15, en revision 003, Version history