ABB RELION REF615R, Technical Manual

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V_A
V_C
V_B
V_A duration
V_B duration
Voltage dip set
Voltage swell set
Voltage Int set
Total variation duration
GUID-922C1D16-46ED-4825-8C9A-4750CCB0B778-ANSI V2 EN
Figure 223: Single-phase interruption for the Phase mode value "Single Phase"
8.3.4.5 Three/single-phase selection variation examples
The provided rules always apply for single-phase ( Phase Mode is "Single Phase") power
systems. However, for three-phase power systems (where Phase Mode is "Three Phase"),
it is required that all the phases have to be activated before the activation of the
PICKUP
output. Interruption event indication requires all three phases to undershoot Voltage Int set
simultaneously, as shown in Figure 219 . When the requirement for interruption for "Three
Phase" is no longer fulfilled, variation is indicated as a dip as long as all phases are active.
In case of a single-phase interruption of Figure 223 , when there is a dip indicated in
another phase but the third phase is not active, there is no variation indication pickup when
Phase Mode is "Three Phase". In this case, only the Phase Mode value "Single Phase"
results in the
PICKUP_B
interruption and the
PICKUP_A
dip.
It is also possible that there are simultaneously a dip in one phase and a swell in other
phases. The functionality of the corresponding event indication with one inactive phase is
shown in
Figure 224 . Here, the "Swell + dip" variation type of Phase mode is "Single
Phase". For the selection "Three Phase" of Phase mode , no event indication or any
activation takes place due to a non-active phase.
Section 8
1MRS240050-IB C
Power quality measurement functions
428 REF615R
Technical Manual