ABB REM615 ANSI 5.0 FP1, Product Manual, Page: 32 / 56

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R E M 61 5 A N S I 5.0 FP1
M OTO R P R OT EC T I O N A N D CO N T R O L
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Table 36. Three-phase undervoltage protection (PHPTUV)
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 U
n
Start time
1) 2)
Minimum Typical Maximum
U
Fault
= 0.9 x set Start value 62 ms 66 ms 70 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 ms3)
Suppression of harmonics DFT: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…
1) Start value = 1.0 × U
n
, Voltage before fault = 1.1 × U
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
1) For further reference, see the Operation characteristics table
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Table 37. Three-phase undervoltage protection (PHPTUV) main settings
Parameter Function Value (range) Step
Start value
PHPTUV 0.05...1.20 × U
n
0.01
Time multiplier
PHPTUV
0.05...15.00 0.01
Operate delay time
PHPTUV 60...300000 ms 10
Operating curve type
1)
PHPTUV
Definite or inverse time
Curve type: 5, 15, 21, 22, 23
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Table 38. 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
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Table 39. 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