ABB REF615 ANSI 5.0 FP1, Product Manual

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R E F61 5 A N S I 5.0 FP1
FEED ER P R OT EC T I O N A N D CO N T R O L
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Table 59. Negative-sequence overvoltage protection (NSPTOV)
Characteristic Value
Operation accuracy
Depending on the frequency of the measured current: f
n
±1.5% of the set value or ±0.002 × U
n
Start time
1) 2)
Minimum Typical Maximum
U
Fault
= 1.1 x set Start value
U
Fault
= 2.0 x set Start value
33 ms
24 ms 35 ms
26 ms 37 ms
28 ms
Reset time Typically 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: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…
1) Negative-sequence voltage before fault = 0.0 × U
n
, f
n
= 50 Hz, negative-sequence overvoltage 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
—
Table 60. Negative-sequence overvoltage protection (NSPTOV) main settings
Parameter Function Value (range) Step
Start value
NSPTOV 0.010...1.000 × U
n
0.001
Operate delay time
NSPTOV 40...120000 ms 1
—
Table 61. Frequency protection (FRPFRQ)
Characteristic Value
Operation accuracy
f>/f< ±5 mHz
df/dt
±50 mHz/s (in range |df/dt| <5 Hz/s)
±2.0% of the set value (in range 5 Hz/s < |df/dt| < 15 Hz/s)
Start time
1) 2)
f>/f< <80 ms
df/dt <120 ms
Reset time <150 ms
Operate time accuracy ±1.0% of the set value or ±30 ms
—
Table 58. Positive-sequence undervoltage protection (PSPTUV) main settings
Parameter Function Value (range) Step
Start value
PSPTUV 0.010...1.200 × U
n
0.001
Operate delay time
PSPTUV 40...120000 ms 10
Voltage block value
PSPTUV 0.01...1.00 × U
n
0.01
—
Table 57. Positive-sequence undervoltage protection (PSPTUV)
Characteristic Value
Operation accuracy
Depending on the frequency of the measured current: f
n
±2 Hz
±1.5% of the set value or ±0.002 x I
n
Start time 1) 2)
Minimum Typical Maximum
U
Fault
= 0.99 x set Start value
U
Fault
= 0.9 x 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: -50dB at f = n x 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