6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 176 -
2.6.1
Relay polarity
The user can choose either non-directional EF or directional EF for each EF stage. In addition,
the user can further select between the forward or the reverse for each of the directional EF
elements selected.
(i)
Characteristic of non-directional EF
The characteristic of the non-directional type EF function is a circle at the origin. A setting and
a scheme switch is used to configure each non-directional EF element; i.e., the user can set the
threshold value of the non-directional EF element for stage1 using setting [
EF1-DT
], provided
time characteristic is required for define time delay (DT) described in section 2.6.2(i). The user
should set
NonDir
for the scheme switch [
EF1-Dir
].
(ii)
Characteristic of directional-EF in the forward direction
As shown in Figure 2.6-1, the characteristic of the directional-EF elements in the forward
direction is a semi-circle based upon the border line; the hatched area shows the operating
region of the directional-EF element.
Figure 2.6-1 Characteristic of the directional-EF element in the forward direction
Note: Directional characteristic angle (θ) forms the angle between the reference quantity
and the directional characteristic angle line. The half plane represents the zone of
operation bordered on one side by the border line and extending in the direction
that contains both the reference (polarizing) and operating quantities.
A setting and a scheme switch, as well as the non-directional EF element, provide the
settings for the directional EF element: for example, the user can set the threshold value (I
EF
)
for stage 1 with the setting [
EF1-DT
] and
Forward
can be set for the scheme switch [
EF1-Dir
].
Reference voltage or
Polarizing voltage (−3Vo)
Operation (Trip) zone
Non-operation (No trip) zone
θ
φ
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 ...
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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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