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4.2
Definite-Time Overcurrent Protection (ANSI 50, 51, 67)
Setting Ranges / Increments
Pickup current I>
Pickup current I>>
Delay times T
Undervoltage seal-in U< (phase-to-phase)
Holding Time of Undervoltage Seal-In
Directional limit line angle tolerance I>>
The set times are pure delay times.
Times
Pickup times
I >, I>>
Current = 2 × Pickup Value
Current = 10 × Pickup Value
Dropout times
I >, I>>
Dropout Ratio
Dropout ratio overcurren I>
Dropout ratio overcurren I>>
Dropout ratio undervoltage
Dropout difference Δϕ
Tolerances
Pickup current
I >, I>>
Undervoltage seal–in U<
Delay times T
Directional limit lines angle
Influencing Variables for Pickup Values
Power supply direct voltage in range 0.8 ≤ U
Temperature in range 23.00 °F (–5 °C) ≤ Θ
Frequency in range 0.95 ≤ f/f
Harmonics
– Up to 10 % 3rd harmonic
– Up to 10 % 5th harmonic
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
for I
= 1 A
0.05 A to 20.00 A
N
for I
= 5 A
0.25 A to 100.00 A
N
for I
= 1 A
0.05 A to 20.00 A
N
for I
= 5 A
0.25 A to 100.00 A
N
0.00 s to 60.00 s
or ∞ (ineffective)
10.0 V to 125.0 V
0.10 s to 60.00 s
–90° el. to +90° el.
approx. 35 ms
approx. 25 ms
approx. 50 ms
0.90 to 0.99
approx. 0.95 for I/I
approx. 1.05
2° elektrical
for I
= 1 A
1 % of setting value or 10 mA
N
for I
= 5 A
1 % of setting value or 50 mA
N
1 % of setting value or 0.5 V
1 % or 10 ms
1° electrical
/U
≤ 1.15
Aux
AuxN
≤ 131.00 °F (55 °C)
amb
≤ 1.05
N
4.2 Definite-Time Overcurrent Protection (ANSI 50, 51, 67)
Increments 0.01 A
Increments 0.01 A
Increments 0.01 A
Increments 0.01 A
Increments 0.01 s
Increments 0.1 V
Increments 0.01 s
Increments 1°
≥ 0,3
N
≤ 1 %
≤ 0.5 % / 10 K
≤ 1 %
≤ 1 %
≤ 1 %
Technical Data
(Increments 0.01)
465
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