ABB Relion 670 Series Applications Manual page 151
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
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1MRK 511 401-UEN Rev. K
harmonic restrain if the level of 2
fundamental current.
Phase selection element also provides fast and reliable faulty phase identification for phase
selective tripping and subsequent reclosing during earth fault. Earth fault protection and
Phase selection must always be blocked while the single phase dead time is running.
8.4.4
Setting guidelines
The parameters for the four step residual over-current protection are set via the local HMI or
PCM600. The following settings can be done for the function.
Common base IED values for the primary current (
power (
GlobalBaseSel : Selects the global base value group used by the function to define IBase , UBase
SBase . Note that this function will only use IBase value.
and
SeqTypeUPol : This is used to select the type of voltage polarising quantity (that is, Zero seq or
Neg seq for direction detection).
SeqTypeIPol : This is used to select the type of current polarising quantity (that is, Zero seq or
Neg seq for direction detection).
SeqTypeIDir : This is used to select the type of operating current quantity (that is, Zero seq or
Neg seq for direction detection).
8.4.4.1
Common settings for all steps
AngleRCA : Relay characteristic angle given in degree. This angle is defined as shown in
Figure 68. The angle is defined positive when the residual current lags the reference voltage
(Upol = 3U
Bay control REC670
Application manual
When inverse time over-current characteristic is selected, the operate time of
the stage will be the sum of the inverse time delay and the set definite time
delay. Thus, if only the inverse time delay is required, it is important to set the
definite time delay for that stage to zero.
SBase ) are set in global base values for settings function GBASVAL.
or U
)
0
2
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nd
harmonic current reaches a value above a set percent of the
IBase ), primary voltage ( UBase ) and primary
Section 8
Current protection
IP14988-1 v1
M15282-3 v13
M15282-81 v11
145
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