ABB REM630 Product Manual page 35

ABB
Motor Protection and Control
REM630
Product version: 1.1
Table 40. Phase reversal protection (PREVPTOC)
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 current before = 0.0 × I
2) Includes the delay of the signal output contact
Table 41. Phase reversal protection (PREVPTOC) main settings
Parameter
Start value
Operate delay time
Table 42. Three-phase thermal overload protection for motors (MPTTR)
Characteristic
Operation accuracy
1)
Operate time accuracy
1) Overload current > 1.2 × Operate level temperature
I = 2.0 x set Start
Fault
value
, f = 50 Hz
n n
Function
PREVPTOC
PREVPTOC
Value
At the frequency f = f
n
±1.5% of the set value or ±0.002 × I
Typical 25 ms (±15 ms)
< 40 ms
Typical 0.96
< 35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n x f
n
...
Value (Range)
0.05...1.00 pu
0.100...30.000 s
Value
At the frequency f = f
n
Current measurement:
±1.5% of the set value or ±0.002 × I
(at currents in the range of 0.01...4.00 × I
±2.0% or ±0.050 s
1MRS756977 D
Issued: 2011-05-18
n
, where n = 2, 3, 4, 5,
Step
0.01
0.001
n
)
n
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