Siemens SIPROTEC 7UM62 - 4.16 Overvoltage Protection (ANSI 59)

Technical Data
4.16 Overvoltage Protection (ANSI 59)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
490
4.16 Overvoltage Protection (ANSI 59)
Setting Ranges / Increments
Times
Tolerances
Influencing Variables
Measured Quantity Maximum of the phase-to-phase voltages, calculat-
ed from the phase-to-earth voltages
Pickup thresholds U>, U>> 30.0 V to 170.0 V Increments 0.1V
Rückfallverhältnis RV U> (Stufen U>, U>>) 0.90 to 0.99 Increments 0.01
Time delays T U>, T U>> 0.00 s to 60.00 s
or ∞ (ineffective)
Increments 0.01 s
The set times are pure delay times.
Pick-up times U>, U>> approx. 50 ms
Dropout times U>, U>> approx. 50 ms
Pickup Voltage Limits 1 % of setting value or 0.5 V
Delay times T 1 % of setting value or 10 ms
Power supply direct voltage in range 0.8 ≤ U
Aux
/U
AuxN
≤ 1.15 ≤ 1 %
Temperature in range 23.00 °F (–5 °C) ≤ Θ
amb
≤ 131.00 °F (55 °C) ≤ 0.5 % / 10 K
Frequency in range 0.95 ≤ f/f
N
≤ 1.05 ≤ 1 %
Harmonics
– Up to 10 % 3rd harmonic
– Up to 10 % 5th harmonic
≤ 1 %
≤ 1 %