DOCA0214EN–04

Neutral Wrong Connections Detections

Field

Description

Applications

  • An alarm is raised when this function is enabled to prevent wrong connection of neutral cable.

  • When this function is enabled and neutral wrong is detected, an alarm will be shown to the user on HMI (only Active Automatic HMI).

Default value

This feature could be enabled or disabled. By default, it is disabled.

Detection criteria

Consider only the normal power source, and conclude if neutral wrong according to check Van, Vbn, Vcn, Vab, Vbc, Vca.

Example: Consider the neutral wrong when the nominal power source is 380 V. For 380 V system, line voltage should be 380 V and phase voltage should be 220 V.

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