ABB RELION 630 Series Product Manual page 28

Generator Protection and Control
REG630
Product version: 1.3
Table 33. Voltage dependent overcurrent protection (PHPVOC) main settings
Parameter
Start value
Start value low
Start value Mult
Voltage high limit
Voltage low limit
Time multiplier
Operate delay time
1)
Operating curve type
1) For further reference, see the Operation characteristics table
Table 34. Three-phase directional overcurrent protection (DPHxPDOC)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
Measurement mode = default (depends of stage), current before fault = 0.0 × I
1)
on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Start value = 2.5 × I Start value multiples in range of 1.5...20
3) Maximum ,
n
28
Function
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
PHPVOC
DPHLPDOC
DPHHPDOC
Start value
I = 2.0 × set
Fault
, f = 50 Hz, fault current in one phase with nominal frequency injected from random phase angle, results based
n n
Value (Range)
0.05...5.00 pu
0.05...1.00 pu
0.8...10.0
0.01...1.00 pu
0.01...1.00 pu
0.05...15.00
0.04...200.00 s
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
Value
At the frequency f = f
n
Current:
±1.5% of the set value or ±0.002 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Phase angle:
±2°
Current:
±1.5% of the set value or ±0.002 × I
× I )
n
±5.0% of the set value (at currents in the range of 10...40 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Phase angle:
±2°
Typically 24 ms (±15 ms)
<40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
RMS: No suppression
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Peak-to-Peak: No suppression
P-to-P+backup: No suppression
1MRS757583 C
Step
0.01
0.01
0.1
0.01
0.01
0.01
0.01
n
n
(at currents in the range of 0.1...10
n
)
n
n
3)
ABB