ABB 615 Series ANSI, Technical Manual

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1MAC050144-MB C
Section 8
Measurement functions
615 series ANSI 577
Technical Manual
In a case where Phase mode is "Single Phase" and the dip functionality is available, the
output DIPST is activated when the measured TRMS value drops below the Voltage dip
set 3 setting in one phase and also remains above the Voltage Int set setting. If the voltage
drops below the Voltage Int set setting, the output INTST is activated. INTST is
deactivated when the voltage value rises above the setting Voltage Int set. When the same
measured TRMS magnitude rises above the setting Voltage swell set 3, the SWELLST
output is activated.
There are three setting value limits for dip (Voltage dip set 1.3) and swell activation
(Voltage swell set 1..3) and one setting value limit for interruption.
Figure 310: Detection of three-phase voltage interruption
The module measures voltage variation magnitude on each phase separately, that is,
phase-segregated status for voltage variation indication is available in monitored data
(PICKUP_A, PICKUP_B and PICKUP_C). The configuration parameter Phase
supervision defines which voltage phase or phases are monitored. If a voltage phase is
If Phase mode is "Three Phase", the DIPST and INTST outputs are
activated when the voltage levels of all monitored phases, defined with the
parameter Phase supervision, drop below the Voltage Int set setting value.
An example for the detection principle of voltage interruption for "Three
Phase" when Phase supervision is "Ph A + B + C", and also the
corresponding pickup signals when Phase mode is "Single Phase", are as
shown in the example for the detection of a three-phase interruption.
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A) Three phase mode
B) Single phase mode