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