ABB RELION 615 SERIES Product Manual page 31

Voltage Protection and Control
REU615
Product version: 5.0 FP1
Table 37. Positive-sequence undervoltage protection (PSPTUV)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
1) Start value = 1.0 × U , positive-sequence voltage before fault = 1.1 × U
n
on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Table 38. Positive-sequence undervoltage protection (PSPTUV) main settings
Parameter
Start value
Operate delay time
Voltage block value
Table 39. Negative-sequence overvoltage protection (NSPTOV)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
1) Negative-sequence voltage before fault = 0.0 × U
distribution of 1000 measurements
2) Includes the delay of the signal output contact
Table 40. Negative-sequence overvoltage protection (NSPTOV) main settings
Parameter
Start value
Operate delay time
ABB
Start value
U = 0.99 × set
Fault
Start value
U = 0.9 × set
Fault
, f = 50 Hz, positive sequence undervoltage with nominal frequency injected from random phase angle, results based
n n
Function
PSPTUV
PSPTUV
PSPTUV
Start value
U = 1.1 × set
Fault
Start value
U = 2.0 × set
Fault
, f = 50 Hz, negative-sequence overvoltage with nominal frequency injected from random phase angle, results based on statistical
n n
Function
NSPTOV
NSPTOV
Value
Depending on the frequency of the measured voltage: f
±1.5% of the set value or ±0.002 × U
Minimum Typical
52 ms 55 ms
44 ms 47 ms
Typically 40 ms
Relative hysteresis
Depends on the set
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value (Range)
0.010...1.200 × U
n
40...120000 ms
0.01...1.00 × U
n
Value
Depending on the frequency of the voltage measured: f
±1.5% of the set value or ±0.002 × U
Minimum Typical
33 ms 35 ms
24 ms 26 ms
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value (Range)
0.010...1.000 × U
n
40...120000 ms
1MRS757058 K
±2 Hz
n
n
Maximum
58 ms
50 ms
Step
0.001
10
0.01
n
n
Maximum
37 ms
28 ms
Step
0.001
1
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