Technical Data
4.7 Overecxitation Protection 24
SIPROTEC, 7RW80, Manual
C53000-G1140-C233-1, Release date 10.2010
193
4.7 Overecxitation Protection 24
Setting Ranges / Increments
Times
Dropout Ratios
Tripping Characteristic
Tolerances
Influencing Variables
Pickup threshold of the warning stage 1.00 to 1.20 Increments 0.01
Pickup threshold of the stage characteristic 1.00 to 1.40 Increments 0.01
Delay times T V/f>, T V/f>>
(Alarm and stage characteristic)
0.00 s to 60.00 s
or ∞ (inactive)
Increments 0.01 s
Characteristic value pairs V/f 1,05/1,10/1,15/1,20/1,25/1,30/1,35/1,40
Associated time delay for t (V/f) thermal replica 0 s to 20 000 s Increments 1 s
Cooling time T
COOL
0 s to 20 000 s Increments 1 s
(Alarm and stage characteristic)
Pickup times for
1.1 · Setting value
approx. 90 ms
Dropout Times approx. 60 ms
Pickup, Tripping approx. 0.98
Thermal Replica
(Presetting and stage characteristic)
see Figure 4-1
Pickup on V/f 3 % of setting value
Delay times T
(Alarm and stage characteristic)
1 % of setting value or 10 ms
Thermal replica (time characteristic) 5 %, related to V/f ±600 ms
Power supply direct voltage in range 0.8 ≤ V
Aux
/V
AuxNom
≤ 1.15 ≤ 1 %
Temperature in the Range 23.00 °F (–5 °C) ≤ Θ
amb
≤ 131.00 °F (55 °C) ≤ 0.5 %/10 K
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
≤ 1 %
≤ 1 %
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