4 Technical Data
406
7UM62 Manual
C53000-G1176-C149-3
4.2
Definite-Time Overcurrent Protection (ANSI 50, 67)
Pickup and Delay
Time Ranges/
Resolutions
Pickup Current
50–1
0.25 A to 100.00 A
1
) (Increments 0.05 A)
1
)
Pickup Current
50–2
0.25 A to 100.00 A
1
) (Increments 0.05 A)
1
)
Delay Times T
50–1, 50–2,
0.00 s to 60.00 s
(Increments 0.01 s)
or
∞
(does not expire)
Undervoltage Seal–In
U<
10.0 V to 125.0 V
(Increments 0.1 V)
Holding Time of Undervoltage Seal–In
0.10 s to 60.00 s
(Increments 0.01 s)
Inclination of Directional Characteristic
–90° el. to +90° el.
(Increments 1° el.)
The set times are pure delay times.
Inherent Operating
Times
Pickup Times
50–1, 50–2
– Current = 2 x Pickup Value
Approx. 35 ms
– Current = 10 x Pickup Value
Approx. 25 ms
Dropout Times
50–1, 50–2
Approx. 50 ms
Dropout
Dropout/Pickup (Ratio) 50–1
Approx. 0.95 for I/I
N
≥
0.3
Dropout/Pickup (Ratio) 50–2
0.90 to 0.99
(Increments 0.01)
Dropout/Pickup (Ratio) U<
Approx. 1.05
Pickup Value – Dropout Value (
∆ϕ)
2° electrical
Tolerances
Pickup Current 50–1, 50–2
1 % of setting value or 50 mA
1
)
Undervoltage Seal–In
U<
1 % of setting value or 0.5 V
Delay Times
T
1 % of setting value or 10 ms
Angle Tolerance
ϕ
1° electrical
Influencing
Variables for
Pickup
Power Supply Direct Voltage in Range
0.8
≤
U
PS
/ U
PS nominal
≤
1.15
1 %
Temperature in Range
23 °F
≤ ϑ
amb
≤
131 °F
0.3 % / 10 °F
–5 °C
≤ ϑ
amb
≤
55 °C
0.5 % / 10 K
Frequency in Range
0.95
≤
f/f
N
≤
1.05
< 1 %
Harmonic Currents
– Up to 10 % 3rd Harmonics
< 1 %
– Up to 10 % 5th Harmonics
< 1 %
1
) For I
N
= 1 A, divide all limits and increments by 5.
