Directio n
Elemen t
4 step over current
elemen t
One ele me nt fo r ea ch
step
Harmonic
Restrain t
Mode
Sele ction
earthFaultDir ection
harmRestrB lock
ena bleDir
ena bleStep1-4
Directio nalMode1-4
TRIP
Elemen t
ena bleDir
ang leValid
Directio nal Che ck
ope ratin gCurrent
SwitchO nTo Fa ult
star t step 2, 3 and 4
signal to
commu nica tion
sche me
TRIP
3U0
3I0
Blocking at par allel
transfor mer s
1
CB
pos
or cmd
Elemen t
3I0
DirMode
DirMode
INP ol
IEC06000376-2-en.vsd
I3PDIR
IEC06000376 V3 EN-US
Figure 97:
Functional overview of EF4PTOC
7.4.8
Technical data
IP11455-1 v1
M15223-1 v17
Table 92:
EF4PTOC technical data
Function
Range or value
Accuracy
Operate current, step 1-4
(1-2500)% of IBase
±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Reset ratio
> 95% at (10-2500)% of IBase
-
Relay characteristic angle
(RCA)
(-180 to 180) degrees
±2.0 degrees
Operate current for directional release
(1–100)% of IBase
For RCA ±60
degrees:
±2.5% of I
r
at I ≤ I
r
±2.5% of I at I > I
r
Independent time delay at 0 to 2 x I
set
, step
1-4
(0.000-60.000) s
±0.2% or ±35 ms
whichever is
greater
Minimum operate time for inverse curves,
step 1-4
(0.000 - 60.000) s
±0.2% or ±35 ms
whichever is
greater
Table continues on next page
1MRK 506 382-UEN A
Section 7
Current protection
Line distance protection REL650 2.2 IEC
203
Technical manual
Summary of Contents for RELION 650 SERIES
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