6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 155 -
Phase difference calculation
|V|
|I|cos(
)
0
Amplitude calculation
|Vpol|
Set voltage (OV-Vpol)
&
Output of
directional element
F/F
1
1
&
Amplitude calculation
|l|
OC pickup current
1
Figure 2.5-3 Direction determination after loss of voltage memory
If a single phase is connected to a heavy load, and the other phases are not connected to
heavy loads, the user can program separately the directional OC element such that OC will
send a trip signal only when the fault current detected is in the same direction among two
phases or more of the three-phases.
A setting and a scheme switch, as well as the non-directional OC element, provide the
settings for the directional OC element: for example, the user can set the threshold value of
the OC at stage 1 with the setting [
OC1
] and
Forward
can be set for the scheme switch [
OC1-
Dir
]. Setting of the sensing angle (θ) is configured by the setting [
OC1-Angle
] with the value of
θ set in the range of 0–180°. Figure 2.5-4 shows an example of an angle and a characteristic
set with θ.
Figure 2.5-4 Examples of directional characteristic angle (θ)
Forward
Reverse
Forward
Reverse
Forward
Reverse
Forward
Reverse
Forward
Reverse
θ=0°
θ=30°
θ=90°
θ=100°
θ=170°
θ=30°
θ=90°
θ=100°
θ=170°
Vpol
Vpol
Vpol
Vpol
Vpol
M
ax. to
rque
Содержание GR 200 Series
Страница 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Страница 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
Страница 1369: ...6F2S1915 0 46 GRZ200 Soft 031 032 1348 Unit mm Panel cut out for 1 2 case size Figure 2 2 3 Panel cutout figure 1 2 size case ...
Страница 1410: ...6F2S1915 0 46 GRZ200 Soft 031 032 1389 This page is intentionally blank ...
Страница 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Страница 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Страница 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Страница 1520: ...6F2S1915 0 46 GRZ200 Soft 031 032 1499 Appendix 9 Matrix between VCT terminals and relay applications ...
Страница 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Страница 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
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