Seg High Tech MRI3-ITE, Manual

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36 TB MRI3-ITE(R) 12.00 E
7.3.3 Earth fault protection
Setting range Step Tolerance
I
E>
0.01...2.0 x I
N
(EXIT) (E)
0.01...0.45 x I
N
(EXIT) (ER)
0.001 (0.01...0.05)
0.002 (0.05...0.1)
0.005 (0.1...0.2)
0.01 (0.2...0.5)
0.02 (0.5...1.0)
0.05 (1.0...2.0)
±
3% from set value
or
±
0.3% I
N
t
IE>
0.04 - 260 s (EXIT)
(definite time)
0.05 - 20 (EXIT)
(inverse time)
0.02 (0.06...1.0)
0.05 (1.0...2.0)
0.1 (2.0...5.0)
0.2 (5.0...8.5)
0.5 (8.5...10.0)
1.0 (10...20)
2.0 (20...50)
5.0 (50...100)
10.0 (100...260)
0.01 (0.05...0.5)
0.02 (0.5...1.0)
0.05 (1.0...2.0)
0.1 (2.0...5.0)
0.2 (5.0...10.0)
0.5 (10.0...20.0)
±
3% or
±
20 ms
±
5% for NINV
and VINV
±
7.5% for NINV
and EINV
I
E>>
0.01...2.0 x I
N
(EXIT) (E)
0.01...0.45 x I
N
(EXIT) (ER)
0.001 (0.01...0.05)
0.002 (0.05...0.1)
0.005 (0.1...0.2)
0.01 (0.2...0.5)
0.02 (0.5...1.0)
0.05 (1.0...2.0)
±
3% from set value
t
IE>>
0.04...10 s (EXIT) 0.02 (0.06...0.5)
0.05.(0.5...2.0)
0.1
(2.0...5.0)
0.2 (5.0...10)
±
3% or
±
20 ms
f
N
50 / 60 Hz
RS 1...32
Table 7.1: Setting ranges and steps
Setting ranges for k:
Cable protection:
k = 1...5
Transformer- and generator stator: k = 0.5...1.5