Hitachi Relion 670 Series Commissioning Manual page 107

1MRK506371-UUS Rev. M
Ensure that the maximum continuous current in an IED does not exceed four times its rated value, if the
measurement of the operating characteristics runs under constant voltage conditions.
The test procedure has to take into consideration that the shaped load encroachment characteristic is
active. It is therefore necessary to check the setting. To verify the settings with the shaped load
encroachment characteristic the test should be carried out according to figures
and 28. In cases where the load encroachment characteristic is activated tests according to the adjusted
figures should be carried out.
To verify the settings for the operating points according to the following fault types should be tested:
• One phase-to-phase fault
• One phase-to-ground fault
The shape of the operating characteristic depends on the values of the setting parameters.
X1set
ANSI05000368 V2 EN-US
Figure 29:
Table 27
Line distance protection REL670
Commissioning manual
The figures illustrating the characteristic for the distance protection function can be used for
settings with and without load encroachment. The solid lines designate the diagram
applicable when the load current compensation is active. The solid line and all test points
except 13 are valid for this case.
Test points 5, 6, and 7 are not valid for this measurement.
X
2
1
11
10
12
9
8
25% of RFPPZx/2
50% of RFPPZx/2
RFPP/2
Distance protection characteristic with test points for phase-to-phase measurements
is used in conjunction with figure 29.
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80%
3
50%
4
5
ArgLd
6
R (Ω/phase)
7 13
ArgDir
ANSI05000368-2-en.vsdx
Section 11
Testing functionality by secondary injection
29 and 30 and tables 27
101