ABB RELION REX640 Technical Manual page 1637

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1MRS759142 C

Technical Manual

"Single Phase". For the selection "Three Phase" of Phase mode, no event indication or

any activation takes place due to a non-active phase.

Voltage swell set

Voltage dip set

Voltage Int set

GUID-4F977366-4415-407A-88A7-BCDE92CBB75D V1 EN

Concurrent dip and swell when Phase mode is "Single Phase"

843, one phase is in dip and two phases have a swell indication. For the

Phase mode value "Three Phase", the activation occurs only when all the phases are

active. Furthermore, both swell and dip variation event detections take place

simultaneously. In case of a concurrent voltage dip and voltage swell, both

SWELLCNT and DIPCNT are incremented by one.

shows that for the Phase mode value "Single Phase", two different

time moment variation event swell detections take place and, consequently, DIPCNT

is incremented by one but SWELLCNT is totally incremented by two. In

it is assumed that variation durations are sufficient for detections

to take place.

Power quality measurement functions

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