ABB REU615, Руководство по эксплуатации продукта

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Table 40. Thermal overload protection, two time constants (T2PTTR)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f
n
±2 Hz
Current measurement: ±1.5% of the set value or ±0.002
x I
n
(at currents in the range of 0.01...4.00 x I
n
)
Operate time accuracy
1)
±2.0% of the theoretical value or ±0.50 s
1) Overload current > 1.2 x Operate level temperature
Table 41. Thermal overload for protection, two time constants (T2PTTR) main settings
Parameter Function Value (Range) Step
Temperature rise T2PTTR
0.0...200.0
o
C
0.1
Max temperature T2PTTR
0.0...200.0
o
C
0.1
Operate temperature T2PTTR 80.0...120.0 % 0.1
Weighting factor p T2PTTR 0.00...1.00 0.01
Short time constant T2PTTR 6...60000 s 1
Current reference T2PTTR 0.05...4.00 x I
n
0.01
Operation T2PTTR Off
On -
Table 42. Residual overvoltage protection (ROVPTOV)
Characteristic Value
Operation accuracy Depending on the frequency of the voltage measured: f
n
±2 Hz
±1.5% of the set value or ±0.002 x U
n
Start time
1)2) Minimum Typical Maximum
U
Fault
= 1.1 x set
Start value
55 ms 56 ms 58 ms
Reset time < 40 ms
Reset ratio Typical 0.96
Retardation time < 35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
1) Residual voltage before fault = 0.0 x U
n
, f
n
= 50 Hz, residual voltage with nominal frequency injected from random phase angle, results based on
statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Voltage Protection and Control 1MRS757058 D
REU615
Product version: 4.0
32 ABB