Function
Range or value
Accuracy
Inverse time characteristics, see Table
,
16 curve types
See Table
and Table
Second harmonic blocking
(5–100)% of fundamental
±2.0% of I
n
Minimum polarizing voltage
(1–100)% of VBase
±0.5% of V
n
Minimum polarizing current
(2-100)% of IBase
±1.0% of I
n
Real part of source Z used for current
polarization
(0.50-1000.00)
W
/phase
-
Imaginary part of source Z used for current
polarization
(0.50–3000.00)
W
/phase
-
Trip time, pickup non-directional at 0 to 2 x
I
set
Min. = 15 ms
Max. = 30 ms
-
Reset time, pickup non-directional at 2 x I
set
to 0
Min. = 15 ms
Max. = 30 ms
-
Trip time, pickup non-directional at 0 to 10 x
I
set
Min. = 5 ms
Max. = 20 ms
-
Reset time, pickup non-directional at 10 x I
set
to 0
Min. = 20 ms
Max. = 35 ms
-
Critical impulse time
10 ms typically at 0 to 2 x I
set
-
Impulse margin time
15 ms typically
-
8.3
Four step directional negative phase sequence
overcurrent protection NS4PTOC (46I2)
GUID-E8CF8AA2-AF54-4FD1-A379-3E55DCA2FA3A v1
8.3.1
Identification
GUID-E1720ADA-7F80-4F2C-82A1-EF2C9EF6A4B4 v1
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Four step negative sequence
overcurrent protection
NS4PTOC
I2
4
4
alt
IEC10000053 V1 EN-US
46I2
8.3.2
Functionality
GUID-485E9D36-0032-4559-9204-101539A32F47 v6
Four step directional negative phase sequence overcurrent protection (NS4PTOC,
(4612) ) has an inverse or definite time delay independent for each step separately.
1MRK 511 408-UUS A
Section 8
Current protection
Phasor measurement unit RES670 2.2 ANSI
213
Technical manual
Summary of Contents for Relion RES670
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