ABB REG630 - Page 38

Table 62. Positive-sequence overvoltage protection (PSPTOV)
Characteristic Value
Operation accuracy At the frequency f = f
n
±1.5% of the set value or ±0.002 × U
n
Start time
1)2)
U
Fault
= 1.1 × set Start value
U
Fault
= 2.0 × set Start value
Typically 29 ms (±15 ms)
Typically 24 ms (±15 ms)
Reset time <40 ms
Reset ratio Typically 0.96
Retardation time <35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1) Positive-sequence voltage before fault = 0.0 × U
n
, f
n
= 50 Hz, positive-sequence overvoltage of nominal frequency injected from random phase angle
2) Includes the delay of the signal output contact
Table 63. Positive-sequence overvoltage protection (PSPTOV) main settings
Parameter
Function Value (Range) Step
Start value PSPTOV 0.800...1.600 pu 0.001
Operate delay time PSPTOV 0.040...120.000 s 0.001
Table 64. Positive-sequence undervoltage protection (PSPTUV)
Characteristic
Value
Operation accuracy At the frequency f = f
n
±1.5% of the set value or ±0.002 × U
n
Start time
1)2)
U
Fault
= 0.9 × set Start value Typically 28 ms (±15 ms)
Reset time <40 ms
Reset ratio Typically 0.96
Retardation time <35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1) Positive-sequence voltage before fault = 1.1 × U
n
, f
n
= 50 Hz, positive-sequence undervoltage of nominal frequency injected from random phase angle
2) Includes the delay of the signal output contact
Table 65. Positive-sequence undervoltage protection (PSPTUV) main settings
Parameter
Function Value (Range) Step
Start value PSPTUV 0.010...1.200 pu 0.001
Operate delay time PSPTUV 0.040...120.000 s 0.001
Voltage block value PSPTUV 0.01...1.0 pu 0.01
Generator Protection and Control
1MRS757583 C
REG630
Product version: 1.3
38 ABB