GE PACSystems RX3i User Manual page 86

Power sync and measurement system

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ANSI Protection Tab

Note that synchronization is an option in 3-phase mode, so the ANSI 25 parameters can

be left at their default values, or changed to suit the application. In this example, the

breaker delay has been set to 85ms (the total contact closure time from CloseRelayOK

signal to contacts physically closing). This allows the PSM to calculate the precise timing

to close the sync relay as close as possible to 0⁰ phase angle in a rotating phase angle

synchronization.

PACSystems* RX3i Power Sync and Measurement System – February 2013

3-42

GFK-2749

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