ABB REV615 - Three-Phase Overvoltage Protection (PHPTOV); Positive-Sequence Undervoltage Protection (PSPTUV)

Table 41. Three-phase overvoltage protection (PHPTOV)
Characteristic Value
Operation accuracy Depending on the frequency of the measured voltage: f
n
±2 Hz
±1.5% of the set value or ±0.002 × U
n
Start time
1)2)
Minimum Typical Maximum
U
Fault
= 1.1 × set Start value
23 ms 27 ms 31 ms
Reset time Typically 40 ms
Reset ratio Depends on the set Relative hysteresis
Retardation time <35 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 DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1) Start value = 1.0 × U
n
, Voltage before fault = 0.9 × U
n
, f
n
= 50 Hz, overvoltage in one phase-to-phase 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 = 1.20 × U
n
, Start value multiples in range of 1.10...2.00
Table 42. Three-phase overvoltage protection (PHPTOV) main settings
Parameter
Function Value (Range) Step
Start value PHPTOV 0.05...1.60 × U
n
0.01
Time multiplier PHPTOV 0.05...15.00 0.01
Operate delay time PHPTOV 40...300000 ms 10
Operating curve type
1)
PHPTOV Definite or inverse time
Curve type: 5, 15, 17, 18, 19, 20
1) For further reference, see the Operation characteristics table
Table 43. Positive-sequence undervoltage protection (PSPTUV)
Characteristic
Value
Operation accuracy Depending on the frequency of the measured voltage: f
n
±2 Hz
±1.5% of the set value or ±0.002 × U
n
Start time
1)2)
Minimum Typical Maximum
U
Fault
= 0.99 × set Start value
U
Fault
= 0.9 × set Start value
52 ms
44 ms
55 ms
47 ms
58 ms
50 ms
Reset time Typically 40 ms
Reset ratio Depends on the set Relative hysteresis
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) Start value = 1.0 × U
n
, positive-sequence voltage before fault = 1.1 × U
n
, f
n
= 50 Hz, positive sequence undervoltage 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
Capacitor Bank Protection and Control
1MRS757952 D
REV615
Product version: 5.0 FP1
ABB 33