ABB Relion REB500, Руководство по применению

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1MRK 505 353-UEN
Section 6
BP-Additions to base documentation
Application Manual 45
Bay protection functions REB500
Table 53 Definite time over and undervoltage protection 59/27 (PTUV/PTOV)
Function/ Parameter Range/ Value
• Pick-up voltage 0.01 to 2.0 U
N
in steps of 0.01 U
N
• Delay 0.02 to 60 s in steps of 0.01 s
• Max. operating time without delay 60 ms
·
Over- and undervoltage detection
·
Single or three-phase measurement with detection of the highest, respectively lowest phase voltage
·
4 independent parameter sets
Accuracies Value
Accuracy of the pick-up setting (at f
N
)
±2% or ±0.005 U
N
•
Reset ratio (U
³
0.1 U
N
)
•
overvoltage
•
undervoltage
•
•
>95%
• <106
Table 54 Three phase current plausibility 46 (PTOC)
Function/ Parameter Range/ Value
• Pick-up differential for sum of internal summation current 0.05 to 1.00 I
N
in steps of 0.05 I
N
• Amplitude compensation for summation CT -2.00 to +2.00 in steps of 0.01
• Delay 0.1 to 60 s in steps of 0.1 s
·
Determination of the sum and phase sequence of the 3 phase currents
·
4 independent parameter sets
Accuracies Value
Accuracy of the pick-up setting at rated frequency
±2% I
N
in the range 0.2 to 1.2 I
N
• Reset ratio
³
90% whole range
Table 55 Three phase voltage plausibility 47 (PTUV)
Function/ Parameter Range/ Value
•
Pick-up differential for sum of internal summation voltage 0.05 to 1.2 U
N
in steps of 0.05 U
N
•
Amplitude compensation for summation VT -2.00 to +2.00 in steps of 0.01
•
Delay 0.1 to 60 s in steps of 0.1 s
·
Determination of the sum and phase sequence of the 3 phase voltages
·
4 independent parameter sets
Accuracies Value
Accuracy of the pick-up setting at rated frequency
±2% U
N
in the range 0.2 to 1.2 U
N
• Reset ratio
>95% (at U > 0.1 U
N
or I > 0.1 I
N
)