Table of Contents
Advertisement
4 Technical Data
4.29
Breaker Failure Protection (ANSI 50BF)
Pickup and Delay
Time Ranges/
Resolutions
Initiating Time
Tolerances
Influencing
Variables
444
Pickup of 50 Element
Delay Time
Pickup Times (protection initiates)
- For Internal Start
- Using Controls
- For External Start
Reset Time
Pickup Current
Delay Time
Power Supply DC voltage (U
0.8 ≤ U
≤ 1.15
/ U
PS
PS nominal
Temperature in Range
23 °F ≤ ϑ
≤ 131 °F
amb
–5 °C ≤ ϑ
≤ 55 °C
amb
Frequency in Range
0.95 ≤ f/f
≤ 1.05
N
Harmonic currents
– Up to 10 % 3. Harmonic
– Up to 10 % 5. Harmonic
1
) For I
= 1 A, divide all limits and increments by 5.
N
BF.I>
0.20 A to 10.00 A
TRIP-Timer
0.06 s to 60.00 s
or ∞ (no trip)
Approx. 50 ms
Approx. 50 ms
Approx. 50 ms
Approx. 50 ms
BF.I>
1 % of set value, or 50 mA
TRIP-Timer
1 % or 10 ms
) in Range
DC
1 %
0.3 % / 10 °F
0.5 % / 10 K
< 1 %
< 1 %
< 1 %
1
1
)(Increments 0.05 A)
)
(Increments 0.01 s)
1
)
7UM62 Manual
C53000-G1176-C149-3
Advertisement
Table of Contents
