Hitachi Relion 670 Series Commissioning Manual page 116
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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Section 11
Testing functionality by secondary injection
Test point
11
12
13
(2 x X1set+X0set)/3
25% of RFPEZx
ANSI05000369 V3 EN-US
Figure 34:
Table 32:
Test point
1
2
3
4
5
6
Table continues on next page
110
Reach
Set value
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 RFPPZx
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
Test points for phase-to-ground C-G (Ohm/Loop)
Reach
Value
X
(2 x X1
+X0
set
R
0
X
(2 x X1
+ X0
set
R
(2 x R1
+ R0
set
X
0.8 x (2 x X1
R
0.8 x (2 x R1
X
0.5 x (2 x X1
R
0.5 x (2 x R1
X
RFPGZx x tan(LdAngle)
R
RFPGZx
X
RLdFwd x tan(LdAngle)
R
RLdFwd
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Comments
If RFPPZx/2 < RLdFw
80%
3
50%
4
5
ArgLd
6
(Ω /loop)
R
7
13
ArgDir
ANSI05000369-3-en.vsdx
Comments
)/3
set
)/3
set
)/3
set
+ X0
)/3
set
set
+ R0
)/3 +RFPGZx
set
set
+ R0
)/3
set
set
+R0
)/3 + RFPGZx
set
set
1MRK506371-UUS Rev. M
Line distance protection REL670
Commissioning manual
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