Directional Residual Overcurrent Protection, Four Steps Ef4Ptoc (51N/67N); Function Revision History; Identification - Hitachi Relion 670 Series Applications Manual

1MRK511407-UUS Rev. N
D ³
t 40
EQUATION1266 V1 EN-US
where it is considered that:
the operate time of overcurrent protection B1 is 40 ms
the breaker open time
the resetting time of protection A1
the additional margin
8.2 Directional residual overcurrent protection, four steps
EF4PTOC (51N/67N)
8.2.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
J
K
M
N
8.2.2

Identification

Function description
Directional residual overcurrent
protection, four steps
Phasor measurement unit RES670
Application manual
+ + +
ms 100 ms 40 ms 40
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 Technical data table updated with note "Operate time and reset time are only valid if harmonic
blocking is turned off for a step".
2.2.3 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.4 The phase selection logic is added to allow phase segregated trip. The new phase selections
outputs added to this release are PHSELL1, PHSELL2 and PHSELL3. The setting
EnPhaseSel is added to enable or disable phase selection. The maximum value changed to
2000.0 % of IBase for IMin1, IMin2, IMin3 and IMin4 settings.
2.2.5 The harmonic restrain function changed to freeze the definite and IDMT timers.
2.2.6 -
2.2.6 Minimum value changed to 0.01 for k1,k2,k3 and k4 settings
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=
ms 220 ms
is 100 ms
is 40 ms and
is 40 ms
IEC 61850 IEC 60617
identification identification
EF4PTOC
4(IN>)
4
alt
4
TEF-REVA V2 EN-US
Current protection
(Equation 40)
GUID-0F9199B0-3F86-45E0-AFC2-747052A20AE1 v3
ANSI/IEEE C37.2
device number
51N_67N
Section 8
IP14509-1 v8
M14881-1 v7
119