ABB RET670 Product Manual page 95

Transformer protection
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ABB
Transformer protection RET670
Customized
Product version: 1.2
Impedance protection
Rule: One and only one of the alternatives (Alt. 1-4) can be ordered
Alternative 1:
Rule: Distance protection and Directional impedance must
be ordered together
Note: Phase selection FDPSPDIS always included in this
package)
Distance protection zones, quadrilateral characteristic
(ZMQPDIS, ZMQAPDIS)
Directional impedance quadrilateral (ZDRDIR)
Phase selection, quadrilateral characteristic with fixed
angle (FDPSPDIS)
Alternative 2:
Rule: All functions within the alternative must be ordered
Note: Phase selection FDPSPDIS always included in this
package)
Distance measuring zone, quadrilateral characteristic for
series compensated lines (ZMCPDIS, ZMCAPDIS)
Directional impedance quadrilateral, including series
compensation (ZDSRDIR, 21D)
Phase selection, quadrilateral characteristic with fixed
angle (FDPSPDIS)
Alternative 3:
Rule: All functions within the alternative must be ordered
Full scheme distance protection, mho characteristic
(ZMHPDIS)
Full scheme distance protection, quadrilateral for earth
faults (ZMMPDIS, ZMMAPDIS)
Directional impedance element for mho characteristic
(ZDMRDIR)
Additional distance protection directional function for earth
faults (ZDARDIR)
Mho impedance supervision logic (ZSMGAPC)
Faulty phase identification with load enchroachment
(FMPSPDIS)
Alternative 4:
Rule: All functions within the alternative must be ordered
Distance protection zone, quadrilateral characteristic,
separate settings (ZMRPDIS, ZMRAPDIS)
1MRK 504 117-BEN D
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1MRK 002 904-XB
1MRK 002 904-YB
1MRK 002 904-AD
1MRK 002 925-AB
1MRK 002 925-CB
1MRK 002 904-AD
1MRK 002 925-EB
1MRK 002 925-GB
1MRK 002 924-PA
1MRK 002 908-VA
1MRK 002 908-UB
1MRK 002 925-BB
1MRK 002 925-VA
95

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