ABB RELION 630 Series Product Manual page 37

Generator Protection and Control
REG630
Product version: 1.3
Table 59. Three-phase overvoltage protection (PHPTOV) main settings
Parameter
Start value
Time multiplier
Operate delay time
1)
Operating curve type
1) For further reference, see the Operation characteristics table
Table 60. Three-phase undervoltage protection (PHPTUV)
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
Start value = 1.0 × U
1) , Voltage before fault = 1.1 × U
n
2) Includes the delay of the signal output contact
3) Minimum Start value = 0.50 × U
Table 61. Three-phase undervoltage protection (PHPTUV) main settings
Parameter
Start value
Time multiplier
Operate delay time
1)
Operating curve type
1) For further reference, see the Operation characteristics table
ABB
Function
PHPTOV
PHPTOV
PHPTOV
PHPTOV
Start value
U = 0.9 × set
Fault
, f = 50 Hz, undervoltage in one phase-to-phase with nominal frequency injected from random phase angle
n n
, Start value multiples in range of 0.90...0.20
n
Function
PHPTUV
PHPTUV
PHPTUV
PHPTUV
Value (Range)
0.05...1.60 pu
0.05...15.00
0.40...300.000 s
Definite or inverse time
Curve type: 5, 15, 17, 18, 19, 20
Value
At the frequency f = f
n
±1.5% of the set value or ±0.002 × U
Typically 24 ms (±15 ms)
<40 ms
Relative hysteresis
Depends of the set
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value (Range)
0.05...1.20 pu
0.05...15.00
0.040...300.000 s
Definite or inverse time
Curve type: 5, 15, 21, 22, 23
1MRS757583 C
Step
0.01
0.01
0.10
n
3)
Step
0.01
0.01
0.010
37