ABB REM615 ANSI - Page 30

ABB 30
1MAC251744 -PG Rev. A
Issued: 03.01.2010
Motor Protection
REM615 ANSI
Product Version 2.0
Measurement functions
Table 58.  ree-phase current measurements (IA, IB, IC)
Characteristic Value
Pickup
accuracy
Depending on the frequency of the current measured: fn ±2Hz
±0.5% or ±0.002 x In
(at currents in the range of 0.01...4.00 x In)
Suppression of har-
monics
DFT: -50dB at f = n x fn, where n = 2, 3, 4, 5,…
RMS: No suppression
Table 59. Current sequence components (I1, I2, I0)
Characteristic Value
Pickup
accuracy
Depending on the frequency of the current measured: f/fn = ±2Hz
±1.0% or ±0.002 x In
at currents in the range of 0.01...4.00 x In
Suppression of har-
monics
DFT: -50dB at f = n x fn, where n = 2, 3, 4, 5,…
Table 57. Emergency startup (62EST) main settings
Parameter Function Value (Range) Step
Operation 62EST O
On
-
Motor stand still A 62EST 0.05...0.20 x In 0.01
Control functions
Table 55. Arc protection (AFD)
Characteristic Value
Pickup Accuracy
±3% of the set value or ±0.01 x I
n
Trip time Minimum Typical Maximum
Operation mode =
“Light+current”
1) 2)
9 ms 12 ms 15 ms
Operation mode = “Light
only”
2)
9 ms 10 ms 12 ms
Reset time < 40 ms
Reset ratio Typical 0.96
1)
Phase Pickup range = 1.0 x In, current before fault = 2.0 x set Phase Pickup range, fn = 50Hz, fault with nominal frequency, results based
on statistical distribution 200 measurements
2)
Includes the delay of the heavy-duty output contact
Table 56. Arc protection (AFD) main settings
Parameter Function Value (Range) Step
Phase Pickup range
(Operating phase current)
AFD 0.50...40.00 x I
n
0.01
Ground Pickup range
(Operating residual current)
AFD 0.05...8.00 x I
n
0.01
Operation mode AFD 1=Light+current
2=Light only
3=BI controlled