Electromagnetic Interference

The protection and energy monitoring features of TeSys island module are based on current sensors. To reduce the risk of electromagnetic interference between two adjacent devices, we recommend that you implement one of the following installation rules if the ratio between the FLA settings of two adjacent devices is >100:1.

• Option 1: Using the engineering tool, reorganize the order of the avatars on the TeSys island so there are no adjacent devices with FLA ratios >100:1

• Option 2: Leave a spacing of 30 mm (1.18 in.) between the two adjacent devices.

The figure below illustrates Option 2.

Additionally:

1. Maintain a minimum distance of 30 cm (11.8 in.) between the TeSys island and sources of extremely high 50 or 60 Hz magnetic fields, such as three-phase bus systems.

2. TeSys island modules have integrated electrostatic discharge (ESD) protection. Discharge potential body charge to the equipment ground before handling or installing a module to reduce the risk of ESD damage.

3. Keep mobile communication devices at least 20 cm (7.87 in.) away from the TeSys island to reduce the likelihood of interference with the TeSys island .

4. Integrating radio communication devices in the same panel or in a near-by panel requires specific precautions related to transmit power and antenna location. Contact a Schneider Electric representative for more information.

5. TeSys island is a Class A device designed for use in environment A (according to FCC Rules & Regulations, Title 47, Part 15, Subpart B). Using TeSys island in environment B may cause radio interference necessitating additional mitigation methods.

6. For additional information on EMC installation practices, refer to Schneider Electric’s Electrical Installation Guide, EIGED306001, or contact a Schneider Electric representative.