Sel 411L - Page 218

P.3.110
SEL-411L Relay Protection Manual Date Code 20151029
Protection Functions
Current and Voltage Source Selection
NA = not applicable.
Current Source Uses
Refer to the Global settings in Table 5.14. Line current source setting LINEI
and alternate line current source settings ALINEI and ALTI, if used, identify
the currents used in the following elements/features described later in this
section and in other sections.
➤ Fault location
➤ Open-phase detection logic
➤ LOP (loss-of-potential) logic
➤ FIDS (fault-type identification selection) logic
➤ Directional elements
➤ CVT (capacitor voltage transformer) transient detection logic
➤ Series-compensation line logic
➤ Load-encroachment logic
➤ OOS (out-of-step) logic
➤ Distance elements
➤ Instantaneous line overcurrent elements
➤ Inverse-time overcurrent elements
➤ DCUB (directional comparison unblocking) trip scheme logic
➤ Metering on page P.9.25, except synchrophasors
Breaker current-source settings (BK1I and BK2I) identify the currents used in
the following elements/features described later in this section and in other
sections.
2 Y IW NA IX COMB NA
2 Y IW NA IX NA NA
2 Y IW NA NA IX NA
2 Y IW NA NA COMB NA
2 Y IW NA NA NA IAX, IBX, ICX,
or NA
2 Y COMB IX IW IX NA
2YCOMB IX IW NA NA
2YCOMB IX IX NA NA
2YCOMB IX NA IX NA
2 Y COMB IX NA NA NA
2 Y COMB NA IW IX NA
2 Y COMB NA IW NA NA
2 Y COMB NA IX NA NA
2 Y COMB NA NA IX NA
2 Y COMB NA NA NA NA
Table 3.44 Available Current Source Selection Settings Combinations When ESS := Y, NUMBK := 2 (Sheet 2 of 2)
NUMBK
(Number of
Breakers)
ESS
(Source
Selection)
LINEI
(Line
Current
Source)
ALINEI
(Alternate Line
Current Source)
BK1I
(Breaker 1
Current Source)
BK2I
(Breaker 2
Current Source)
IPOL
(Polarizing
Current)