Siemens SIPROTEC 7UM62 - 4.14 Out-of-Step Protection (ANSI 78)

Technical Data
4.14 Out-of-Step Protection (ANSI 78)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
487
4.14 Out-of-Step Protection (ANSI 78)
Pickup
Power Swing Polygon
Times
Influencing Variables for Pickup Values
Positive sequence current I
1
>/I
N
20.0 % to 400.0 % Increments 0.1 %
Negative sequence current I
2
</I
N
5.0 % to 100.0 % Increments 0.1 %
Dropout ratios
- I
1
>
- I2<
approx. 0.95ms
approx. 1.05
Measuring tolerances acc. to VDE 0435
Part 303
3 % of setting value
Impedance Za (secondary) for I
N
= 1 A 0,20 Ω up to 130.00 Ω Increments 0.01 Ω
Impedance Za (secondary for I
N
= 5 A 0,04 Ω up to 26.00 Ω
Impedance Zb (secondary) for I
N
= 1 A 0,10 Ω up to 130.00 Ω Increments 0.01 Ω
Impedance Zb (secondary) for I
N
= 5 A 0,02 Ω up to 26.00 Ω
Impedance Zc (secondary) for I
N
= 1 A 0,10 Ω up to 130.00 Ω Increments 0.01 Ω
Impedance Zc (secondary) for I
N
= 5 A 0,02 Ω up to 26.00 Ω
Impedance Zd-Zc (secondary) for I
N
= 1 A 0,00 Ω up to 130.00 Ω Increments 0.01 Ω
Impedance Zd-Zc (secondary) for I
N
= 5 A 0,00 Ω up to 26.00 Ω
Angle of Inclination of the Polygon 60.0° to 90.0° Increments 0.1°
Number of permissible power swings
- on crossing characteristic 1
- on crossing characteristic 2
1 to 10
1 to 20
Measuring tolerances acc. to VDE 0435
with sinusoidal quantities
|ΔZ/Z| ≤ 5 % for 30° ≤ ϕ
K
≤ 90° or 10 mΩ
Pickup Seal-In Time T
H
0.20 s to 60.00 s Increments 0.01 s
Holding Time of Out-of-Step Indication 0.02 s to 0.15 s Increments 0.01 s
Delay Time Tolerances 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 %