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4.7
Overecxitation Protection 24
Setting Ranges / Increments
Pickup threshold of the warning stage
Pickup threshold of the stage characteristic
Delay times T V/f>, T V/f>>
(Alarm and stage characteristic)
Characteristic value pairs V/f
Associated time delay for t (V/f) thermal replica
Cooling time T
COOL
Times
Alarm and stage characteristic
Pickup times for 1.1 · Setting value
Dropout Times
Dropout Ratios
Pickup, Tripping
Tripping Characteristic
Thermal Replica
(Presetting and stage characteristic)
Tolerances
Pickup on V/f
Delay times T
(Alarm and stage characteristic)
Thermal replica (time characteristic)
Influencing Variables
Power supply direct voltage in range 0.8 ≤ V
1.15
Temperature in the Range 23.00 °F (–5 °C) ≤ Θ
131.00 °F (55 °C)
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
SIPROTEC 4, 7RW80, Manual
C53000-G1140-C233-4, Edition 07.2018
1.00 to 1.20
1.00 to 1.40
0.00 s to 60.00 s
or ∞ (inactive)
1.05/1,10/1,15/1,20/1.25/1,30/1.35/1.40
0 s to 20 000 s
0 s to 20 000 s
approx. 90 ms
approx. 60 ms
approx. 0.98
see
Figure 4-1
3 % of setting value
1 % of setting value or 10 ms
5 %, related to V/f ±600 ms
/V
≤
≤ 1 %
Aux
AuxNom
≤
≤ 0.5 %/10 K
amb
≤ 1 %
≤ 1 %
Technical Data
4.7 Overecxitation Protection 24
Increments 0.01
Increments 0.01
Increments 0.01 s
Increments 1 s
Increments 1 s
177
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