Hitachi Relion 670 Series Applications Manual page 137

1MRK506375-UEN Rev. N
Direction = Forward
Time = 0.0 s
Zone 2 settings:
Forward X = 24.00 Ω primary
Forward RF = 14.00 Ω primary
Reverse RF = 18.00 Ω primary
Direction = Forward
Time = 0.25 s
Zone 3 settings:
Forward X = 30.00 Ω primary
Reverse X = 2.00 Ω primary
Forward RF = 14.00 Ω primary
Reverse RF = 18.00 Ω primary
Direction = Non-directional
Time = 0.5 s
Set the following values in order to implement these settings into the IED:
On the TRM module, the CT and VT ratios (that is, 600/1 and 27.5/0.1) for the used analogue inputs
shall be entered accordingly.
For the distance protection function ZRCPDIS, enter the settings as described in Table 17:
Table 17:
General settings
Parameter name
IBase
UBase
SBase
Operation
CharAng
IMinOp
RLd
ArgLd
Directional blinder settings
Parameter name
ArgNegRes
ArgDir
Zone 1 settings
Parameter name
Table continues on next page
Railway application RER670
Application manual
Setting example for ZRCPDIS
Value
600 A
27.5 kV
16.5 MVA
On
81 degree
10.0 % of IBase
100.00 Ω
30 degree
Value
115 degrees
15 degrees
Value
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Comment
Rated primary current of the feeder CT
Rated primary voltage of the feeder VT
SBase = UBase * IBase
To enable the distance function
In order to limit the resistive reach for high X values
Minimum operating current (default)
Not used, leave to default value
Not used, leave to default value
Comment
Leave to default value
Leave to default value
Comment
Section 7
Impedance protection
131