Table 31. Three-phase directional overcurrent protection (DPHxPDOC) main settings
Parameter Function Value (Range) Step
Start value DPHLPDOC 0.05...5.00 × In 0.01
DPHHPDOC 0.10...40.00 × In 0.01
Time multiplier DPHxPDOC 0.05...15.00 0.01
Operate delay time DPHxPDOC 40...200000 ms 10
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 Operating characteristics table
Table 32. Non-directional earth-fault protection (EFxPTOC)
Characteristic
Value
Operation accuracy Depending on the frequency of the measured current: f
n
±2 Hz
EFLPTOC
±1.5% of the set value or ±0.002 × 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)
Minimum Typical Maximum
EFIPTOC:
I
Fault
= 2 × set
Start value
I
Fault
= 10 × set
Start value
16 ms
11 ms
19 ms
12 ms
23 ms
14 ms
EFHPTOC and EFLPTOC:
I
Fault
= 2 × set
Start value
23 ms
26 ms
29 ms
Reset time Typically 40 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)
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
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