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 41. Wattmetric-based earth-fault protection (WPWDE) main settings
Parameter Function Value (range) Step
Directional mode WPWDE
2 = Forward
3 = Reverse
-
Current start value
WPWDE
0.010...5.000 × I
n
0.001
Voltage start value WPWDE 0.010...1.000 × U
n
0.001
Power start value WPWDE 0.003...1.000 × P
n
0.001
Reference power WPWDE 0.050...1.000 × P
n
0.001
Characteristic angle WPWDE -179...180° 1
Time multiplier WPWDE 0.05...2.00 0.01
Operating curve type 1) WPWDE
Definite or inverse time
Curve type: 5, 15, 20
Operate delay time
WPWDE 60...200000 ms 10
Min operate current
WPWDE 0.010...1.000 × I
n
0.001
Min operate voltage WPWDE 0.01...1.00 × U
n
0.01
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Table 42. Transient/intermittent earth-fault protection (INTRPTEF)
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 × Uo
Operate time accuracy ±1.0% of the set value or ±20 ms
Suppression of harmonics -50 dB at f = n × fn, where n = 2,3,4,5,…
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Table 43. Transient/intermittent earth-fault protection (INTRPTEF) main settings
Parameter Function Value (range) Step
Directional mode INTRPTEF
1 = Non-directional
2 = Forward
3 = Reverse
-
Operate delay time INTRPTEF 40...1200000 ms 10
Voltage start value INTRPTEF 0.05...0.50 × U
n
0.01
Operation mode INTRPTEF
1 = Intermittent EF
2 = Transient EF
-
Peak counter limit INTRPTEF 2...20 1
Min operate current INTRPTEF 0.01...1.00 × I
n
0.01
—
Table 44. Harmonics-based earth-fault protection (HAEFPTOC)
Characteristic Value
Operation accuracy
Depending on the frequency of the measured current: f
n
±2 Hz
±5% of the set value or ±0.004 × I
n
Start time
1), 2)
Typically 77 ms
Reset time Typically 40 ms
Reset ratio Typically 0.96
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in IDMT mode 3) ±5.0% of the set value or ±20 ms
Suppression of harmonics
-50 dB at f = fn
-3 dB at f = 13 × fn
1) Fundamental frequency current = 1.0 × I
n
, harmonics current before fault = 0.0 × I
n
, harmonics fault current 2.0 × Start value , results based on statistical distribution of 1000 mea -
surements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × I
n
, Start value multiples in range of 2...20