49
—
Table 55. Three-phase overvoltage protection (PHPTOV)
Characteristic Value
Operation accuracy
Depending on the frequency of the measured current: f
n
n
Start time
Minimum Typical Maximum
U
Fault
Reset time
Reset ratio Depends on the set Relative hysteresis
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
n
n
n
, fn = 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
n
, Start value multiples in range of 1.10...2.00
1) For further reference, see the Operation characteristics table
—
Table 56. Three-phase overvoltage protection (PHPTOV) main settings
Parameter Function Value (range) Step
Start value
PHPTOV
n
Time multiplier
PHPTOV
Operate delay time
PHPTOV
Operating curve type
PHPTOV
Definite or inverse time
1) For further reference, see the Operation characteristics table
—
Table 54. Three-phase undervoltage protection (PHPTUV) main settings
Parameter Function Value (range) Step
Start value
PHPTUV
n
Time multiplier
PHPTUV
Operate delay time
PHPTUV
Operating curve type
PHPTUV
Definite or inverse time
—
Table 53. Three-phase undervoltage protection (PHPTUV)
Characteristic Value
Operation accuracy
Depending on the frequency of the measured current: f
n
n
Start time
Minimum Typical Maximum
U
Fault
Reset time
Reset ratio Depends on the set Relative hysteresis
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
n
n
n
, f
n
= 50 Hz, undervoltage 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) Minimum Start value = 0.50, Start value multiples in range of 0.90...0.20
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