Hitachi Relion 670 Series Applications Manual page 134

Section 7
Impedance protection
Therefore, set this to 0.83.
RFPEFwZ3: This may be set identical to setting RFPEFwZ2 which is 40.13 Ohm.
RFPERvZ3: It is set identical to setting RFPEFwZ3 which is 40.13 Ohm.
RFPPFwZ3: This may be set identical to setting RFPEFwZ3 which is 40.13 Ohm.
RFPPRvZ3: It is set identical to setting RFPEFwZ3 which is 40.13 Ohm.
TimerSelZ3: For Zone timer selection mode of zone 3. Set this to Timers separated.
OpModetPEZ3: Set this to On.
tPEZ3: Choose a time delay for zone 3 with a margin to assure selectivity to zone 2 of adjacent lines.
A delay time difference of 0.4s between the zones is sufficient. The time delay for zone 3 therefore
can be set to 0.8s.
OpModetPPZ3: Set this to On.
tPPZ3: Set this identical to tPPZ3 = 0.8s.
Phase selection
tI0: It is strongly recommended not to use residual overcurrent based phase selection incase of
solidly earthed systems. Hence, set this to 60.0s.
7.3 Catenary distance protection ZRCPDIS
7.3.1 Function revision history
Document
revision
C
D
E
F
G
H
M
N
Function description
Distance protection for railway
catenary, quadrilateral
characteristic
128
Zones 4, 5 and 6 can be set on similar lines based on the application.
Product History
revision
2.2.2 Added ZRCPDIS function
2.2.3 Seal-in voltage level is increased to 10.0% UB and internal time delay of one fundamental
power cycle for seal-in detection is added for stable direction detection and trip indication
even with low voltage conditions during fault. Operating time improvement for faults
occurrence around 90.0% to 95% of set reach for all measuring zones. No maloperation
from instantaneous measuring zones at CB opening.
2.2.3 -
2.2.4 -
2.2.4 -
2.2.5 -
2.2.6 -
2.2.6 -
IEC 61850
identification
ZRCPDIS
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IEC 60617 identification
Z<
IEC17000092 V1 EN-US
1MRK506375-UEN Rev. N
GUID-4A41544D-90A7-4C24-B1F6-6B610B1B3839 v1
GUID-9B85841A-2298-47D6-ACDF-08B10B0F7749 v1
GUID-4B9EEA90-8F14-4CE4-8DF1-BCE1D96A144C v3
GUID-842A1324-9661-428A-A94B-B387031AA522 v2
ANSI/IEEE C37.2
device number
21
Railway application RER670
Application manual