Overexcitation Protection (Oepvph); Overexcitation Protection (Oepvph) Main Settings - ABB REX640 Product Manual

REX640
Product version: 1
Table 94. Overexcitation protection (OEPVPH)
Characteristic
Operation accuracy
1)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite-time mode
Operate time accuracy in inverse-time mode
1) Includes the delay of the signal output contact
Table 95. Overexcitation protection (OEPVPH) main settings
Parameter
Start value
Operating curve type 1)
Time multiplier
Operate delay time
Cooling time
1) For further reference, see the Operation characteristics table
Table 96. Three-phase thermal protection for feeders, cables and distribution transformers (T1PTTR)
Characteristic
Operation accuracy
1)
Operate time accuracy
1) Overload current > 1.2 × Operate level temperature
ABB
Function
OEPVPH
OEPVPH
OEPVPH
OEPVPH
OEPVPH
Value
Depending on the frequency of the measured current: f
±3.0% of the set value
Frequency change:
Typically 200 ms
Voltage change:
Typically 40 ms
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±50 ms
Value (Range)
100...200%
Definite or inverse time
Curve type: 5, 15, 17, 18, 19, 20
0.1...100.0
200...200000 ms
5...10000 s
Value
Depending on the frequency of the measured current: f
Current measurement: ±1.5% of the set value or ±0.002 × I
in the range of 0.01...4.00 × I
n
±2.0% of the theoretical value or ±0.50 s
1MRS759144 A
±2 Hz
n
Step
1
0.1
10
1
±2 Hz
n
n
)
(at currents
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