4 Technical Data
322
7UM61 Manual
C53000-G1176-C127-3
4.9
Impedance Protection (ANSI 21)
Pickup
Impedance Measurement
Times
Influencing Variables for Pickup Values
Pickup current IMP I>
for I
N
= 1 A
0.10 A to 20.00 A
Increments 0.01 A
for I
N
= 5 A
0.50 A to 100.00 A
Increments 0.05 A
Dropout Ratio
approx. 0.95
Increments 0.1 %
Measuring Tolerances
acc. to VDE 0435
for I
N
= 1 A
1 % of setting value or 10 mA
for I
N
= 5 A
1 % of setting value or 50 mA
Undervoltage Seal-In U<
10.0 V to 125.0 V
Increments 0.1 V
Dropout Ratio
approx. 1.05
Characteristic
Polygonal, 3 independent stages
Impedance Z1 (secondary, Based on
I
N
=
1 A)
0,05
Ω
up to 130.00
Ω
Increments
0.01
Ω
Impedance Z1 (secondary, Based on
I
N
=
5 A)
0,01
Ω
up to 26.00
Ω
Impedance Z1B (secondary, Based on
I
N
= 1 A)
0,05
Ω
up to 65.00
Ω
Increments
0.01
Ω
Impedance Z1B (secondary, Based on
I
N
= 5 A)
0,01
Ω
up to 13.00
Ω
Impedance Z2 (secondary, Based on
I
N
=
1 A)
0,05
Ω
up to 65.00
Ω
Increments
0.01
Ω
Impedance Z2 (secondary, Based on
I
N
= 5 A)
0,01
Ω
up to 13.00
Ω
Measuring Tolerances as per VDE0435
part 303 with Sinusoidal Quantities
|
∆
Z/Z|
≤
5 % for 30
°
≤
ϕ
K
≤
90
°
or 10 m
Ω
Delay Times
0.00 s to 60.00 s
Increments 0.01 s
Shortest Tripping Time
35 ms
Typical Tripping Time
approx. 40 ms
Dropout Time
approx. 50 ms
Holding Time of Undervoltage Seal-In
0.10 s to 60.00 s
Increments 0.01 s
Delay Time Tolerances
1 % of setting value or 10 ms
Auxiliary DC voltage in range
0.8
≤
U
Aux
/U
AuxN
≤
1.15
≤
1 %
Temperature in Range
23
°
F or –5
°
C
≤
Θ
amb
≤
131
°
F or 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 %
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