Measuring The Operating Limit Of Set Values - Hitachi Relion 670 Series Commissioning Manual

1MRK506371-UUS Rev. M
X1
ANSI09000735 V1 EN-US
Figure 26:
Table 24:
Test point
1
2
3
4
5
6
Table 24
11.4.2.1

Measuring the operating limit of set values

Procedure:
Line distance protection REL670
Commissioning manual
(
X
1
4
85%
ArgNegRes
6
50% RLdFwd
0.5·RFltFwdPP
Operating characteristic for phase selection function, forward direction phase-to-
phase faults
Test points for phase-to-phase loops A-B (Ohm/phase)
Reach Value
X X1
R 0
X 0
R RLdFwd
R 0.5·RFLdFwPP
X 0.85·X1
R 0.85·X1·1/tan(60°)+0.5 RFLdFwdPP
X 0.85·X1
R -0.85·X1·tan (AngNegRes-90°)
X 0.5·RFLdFwdPP·tan (ArgLd)
R 0.5·RFLdFwdPP
X -0.5·RLdFwd·tan (ArgDir)
R 0.5·RLdFwd
is used together with figure 26.
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W
/ phase )
3
LdAngle
5
60°
2
7
ArgDir
ANSI09000735-1-en.vsd
Comments
When RLdFWd < 0,5·RFLdFwPP
When RLdFwd > 0,5·RFLdFwPP
R=0.491·X1+0.5 RFLdFwdPP
Can be limited by RFLdFwPP
Only when RLdFwd < RFLdFwPP
Testing functionality by secondary injection
W
( / phase )
R
Section 11
M13906-73 v6
97