DOCA0170EN-06

Zone-Selective Interlocking Test

The Zone-Selective Interlocking (ZSI) test verifies field wiring between multiple circuit breakers connected in a ZSI system.

While connected to a downstream MicroLogic trip unit, the Service Interface causes the MicroLogic trip unit to transmit a secondary injection signal to all connected upstream compatible devices (Communicating MicroLogic trip units, Restraint Interface Module (RIM) module, and ZSI interface module).

NOTE:
  • To perform the ZSI test and to generate the project report with the test details, you must have downstream and upstream circuit breakers in the same EPC project.

  • The ZSI test is performed for maximum of 15 minutes before automatically shutting down.

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