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Fault quantities and pre-fault-quantities
(vi)
Numbers of metering power amplitudes, phase angles, ratios, etc. are memorized in the fault
recording function. Table 8.1-1 shows memorized quantities, of which types are dependent on
the order, which the user can identify it with the ordering number at Positon "S, G, and T".
When a fault occurs, the function memorizes the fault information by which the function
cannot observe the fault (i.e., fault duration time); but, it can memorize the information just
before the fault has occurred (i.e., pre-fault quantities). The user can adjust the function start
with setting [Pre-Fault time].
Phase currents
Zero sequence phase currents
Symmetrical currents
Phase to phase voltages
Phase voltages
Zero sequence phase voltage
Voltage for autoreclosing checking
Symmetrical voltages
Rate of positive-sequence current(I1) to
negative-sequence current(I2)
Thermal capacity
Frequency
Rate of frequency changing
Power factor
Active power factor
Reactive power factor
Demand values during fault duration time
Note: 'I 0 (i.e., 3I 0 )' and 'V 0 (i.e., 3V 0 )' are calculated with three-phase quantities.
†
Note: 'I e ' is obtained at 'I e ' circuit on VCT.
‡
Note: Model is chosen by the number of at ordering codes at positions T. See Software
§
selection in
Table 8.1-1 Recording quantities
Recording quantities
3 phase total
Per phases
3 phase total
Per phases
3 phase total
Per phases
Motor parameters
Fault duration time
Ia Max, Ib Max, Ic Max
Vab Max, Vbc Max, Vca Max
Vab MIn, Vbc Min, Vca Min
Va Max, Vb Max, Vc Max
Appendix: Ordering
- 730 -
Fault
quantities
Ia, Ib, Ic
Ie‡
Ise‡
I1, I2, I0†
Vab, Vbc, Vca
Va, Vb, Vc
Ve
Vs
V1, V2, V0†
I2/I1
THM-Capacity
f
df/dt
PF
PFa, PFb, PFc
P
Pa, Pb, Pc
Q
Qa, Qb, Qc
Ie Max
Ise Max
Ve Max
(→ p. 1133).
6F2T0207 (0.01)
Model
GRE200-
Pre-fault
5
quantities
✓
✓
✓
✓
NA
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
NA
✓
✓
NA
✓
✓
NA
✓
✓
NA
NA
✓
NA
NA
✓
NA
NA
✓
GRE200 (5,6)
§
6
NA
✓
NA
✓
✓
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