ABB Relion 630 Series, Руководство по эксплуатации продукта

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Table 35. Three-phase directional overcurrent protection (DPHxPDOC) main settings
Parameter Function Value (Range) Step
Start value DPHLPDOC 0.05...5.00 pu 0.01
DPHHPDOC 0.05...5.00 pu 0.01
Time multiplier DPHxPDOC 0.05...15.00 0.01
Operate delay time DPHxPDOC 0.04...200.00 s 0.01
Directional mode DPHxPDOC 1 = Non-directional
2 = Forward
3 = Reverse
Characteristic angle DPHxPDOC -179...180° 1
Operating curve type
1)
DPHLPDOC Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
DPHHPDOC Definite or inverse time
Curve type: 1, 3, 5, 9, 10, 12, 15, 17
1) For further reference, refer to the Operation characteristics table
Table 36. Non-directional earth-fault protection (EFxPTOC)
Characteristic Value
Operation accuracy At the frequency f = f
n
EFLPTOC ±1.5% of the set value or ±0.001 × I
n
EFHPTOC
and
EFIPTOC ±1.5% of set value or ±0.002 × I
n
(at currents in the range of 0.1…10 × I
n
)
±5.0% of the set value
(at currents in the range of 10…40 × I
n
)
Start time 1)2)
EFIPTOC:
I
Fault
= 2 × set
Start value
Typically 12 ms (±5 ms)
EFHPTOC:
I
Fault
= 2 × set Start value
Typically 19 ms (±5 ms)
EFLPTOC:
I
Fault
= 2 × set
Start value
Typically 23 ms (±15 ms)
Reset time <45 ms
Reset ratio Typically 0.96
Retardation time <30 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode
±5.0% of the theoretical value or ±20 ms
3)
Suppression of harmonics RMS: No suppression
DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
Peak-to-Peak: No suppression
1)
Operate curve type = IEC definite time, Measurement mode = default (depends on stage), current before fault = 0.0 × I
n
, f
n
= 50 Hz, earth-fault current with nominal frequency injected from
random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × I
n
, Start value multiples in range of 1.5...20
Generator Protection and Control 1MRS757583 C
REG630
Product version: 1.3
ABB 29