Hitachi Relion 670 Series Commissioning Manual page 99
Line distance protection
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Also See for Relion 670 Series:
- Applications manual (438 pages) ,
- Commissioning manual (242 pages) ,
- Product manual (192 pages)
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1MRK506371-UUS Rev. M
Test point
6
7
8
9
10
11
12
13
Table
21
(2 x X1set+X0set)/3
25% of RFPEZx
ANSI05000369 V3 EN-US
Figure 24:
Table
22
Line distance protection REL670
Commissioning manual
Reach
Set value
X
RLdFw x tan(AngLd)
R
RLdFw
X
0
R
RLdFw
X
–0.8 x RLdFw/2 x tan(AngDir)
R
0.8 x RLdFw/2
X
–0.4 x RLdFw x tan(ArgDir)
R
0.4 x RLdFw
X
0.5 x X1
set
R
0.5 x X1
/ tan(AngNegRes)
set
X
0.8 x X1
set
R
0.8 x X1
/ tan(AngNegRes)
set
X
0.5 x X1
set
R
0.5 x R1
set
X
0
R
0.5 x RFPP
is used in conjunction with figure 23.
X
2
1
11
10
12
9
8
50% of RFPEZx
alt. 80% of
RFPG
RFPG (Load
encroachment)
Distance protection characteristic with test points for phase-to-ground measurements
is used in conjunction with figure 24.
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Comments
Only used when RLdFw > 0.5 x RFPP
80%
3
50%
4
5
ArgLd
6
(Ω /loop)
R
7
13
ArgDir
ANSI05000369-3-en.vsdx
Section 11
Testing functionality by secondary injection
93
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