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4.5.9.8
Monitored data
Table 584:
27R Monitored data
Name
Type
Values (Range)
Unit
Description
U_AMPL_A
FLOAT32
0.00...5.00
xUn
Remanent voltage of phase A
U_AMPL_B
FLOAT32
0.00...5.00
xUn
Remanent voltage of phase B
U_AMPL_C
FLOAT32
0.00...5.00
xUn
Remanent voltage of phase C
U_AMPL_AB
FLOAT32
0.00...5.00
xUn
Remanent voltage of phase to
phase AB
U_AMPL_BC
FLOAT32
0.00...5.00
xUn
Remanent voltage of phase to
phase BC
U_AMPL_CA
FLOAT32
0.00...5.00
xUn
Remanent voltage of phase to
phase CA
27R
Enum
1=Enabled
2=blocked
3=test
4=test/blocked
5=Disabled
Status
4.5.9.9
Technical data
Table 585:
27R Technical data
Characteristic
Value
Operation accuracy
±4% of setting or ±0.01 × V
n
(70 Hz > = f > 20 Hz)
±10% of setting (20 Hz > = f ≥ 10 Hz)
Pickup time
1)
Minimum
Typical
Maximum
30 ms
75 ms
140 ms
Reset time
<180 ms
Reset ratio
Depends on the relative hysteresis setting
Retardation time
<45 ms
Trip time accuracy
2)
±1.0% of the set value or ±20 ms
Suppression of harmonics
Operates only in RMS mode
1) Includes the delay of the signal output contact
2) Trip time delays do not account for variation due to pickup delay
1MAC059074-MB A
Section 4
Protection functions
615 series ANSI
677
Technical Manual
Содержание Relion 615 series
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