Underpower Protection (Duppdpr) Main Settings; Three-Phase Underimpedance Protection (Uzpdis); Three-Phase Underexcitation Protection (Uexpdis) - ABB REX640 Product Manual

REX640
Product version: 1
Table 121. Underpower protection (DUPPDPR) main settings
Parameter
Start value
Operate delay time
Pol reversal
Disable time
Table 122. Three-phase underimpedance protection (UZPDIS)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy
1) f = 50 Hz, results based on statistical distribution of 1000 measurements
n
2) Includes the delay of the signal output contact
Table 123. Three-phase underimpedance protection (UZPDIS) main settings
Parameter
Polar reach
Operate delay time
Table 124. Three-phase underexcitation protection (UEXPDIS)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy
Suppression of harmonics
1) f = 50Hz, results based on statistical distribution of 1000 measurements
n
2) Includes the delay of the signal output contact
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Function
DUPPDPR
DUPPDPR
DUPPDPR
DUPPDPR
Function
UZPDIS
UZPDIS
Value (Range)
0.01...2.00 × S
n
40...300000 ms
0 = False
1 = True
0...60000 ms
Value
Depending on the frequency of the measured current and voltage: f
Hz
±3.0% of the set value or ±0.2 %Zb
Typically 50 ms
Typically 40 ms
Typically 1.04
<40 ms
±1.0% of the set value or ±20 ms
Value (Range)
1...6000 %Z
n
40...200000 ms
Value
Depending on the frequency of the measured current and voltage:
f = f ± 2 Hz
n
±3.0% of the set value or ±0.2% Zb
Typically 45 ms
Typically 30 ms
Typically 1.04
Total retardation time when the impedance returns from the operating
circle <40 ms
±1.0% of the set value or ±20 ms
-50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
1MRS759144 A
Step
0.01
10
-
1000
Step
1
10
±2
n
ABB