ABB RET670 Product Manual page 55

ABB
Transformer protection RET670
Customized
Product version: 1.2
Table 37. Phase selection with load encroachment, quadrilateral characteristic FRPSPDIS
Function
Minimum operate current
Reactive reach, positive
sequence
Resistive reach, positive
sequence
Reactive reach, zero sequence
Resistive reach, zero sequence
Fault resistance, phase-to-earth
faults, forward and reverse
Fault resistance, phase-to-phase
faults, forward and reverse
Load encroachment criteria:
Load resistance, forward and
reverse
Safety load impedance angle
Reset ratio
Table 38. Power swing detection ZMRPSB
Function
Reactive reach
Resistive reach
Timers
Table 39. Pole slip protection PSPPPAM
Function
Impedance reach
Characteristic angle
Start and trip angles
Zone 1 and Zone 2 trip counters
Range or value
(5-500)% of IBase
(0.50–3000.00) Ω/phase
(0.10–1000.00) Ω/phase
(0.50–9000.00) Ω/phase
(0.50–3000.00) Ω/phase
(1.00–9000.00) Ω/loop
(0.50–3000.00) Ω/loop
(1.00–3000.00) Ω/phase
(5-70) degrees
105% typically
Range or value
(0.10-3000.00) W/phase
(0.10–1000.00) W/loop
(0.000-60.000) s
Range or value
(0.00–1000.00)% of Zbase
(72.00–90.00) degrees
(0.0–180.0) degrees
(1-20)
1MRK 504 117-BEN D
Accuracy
-
± 2.0% static accuracy
± 2.0 degrees static angular accuracy
Conditions:
Voltage range: (0.1-1.1) x I
r
Current range: (0.5-30) x IBase
Angle: at 0 degrees and 85 degrees
-
Accuracy
± 2.0% static accuracy
Conditions:
Voltage range: (0.1-1.1) x U
r
Current range: (0.5-30) x I
r
Angle: at 0 degrees and 85 degrees
± 0.5% ± 10 ms
Accuracy
± 2.0% of Ur/Ir
± 5.0 degrees
± 5.0 degrees
-
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