Siemens VT630 Operating Instructions Manual page 10

Operating Instructions
(20)
Rated current
of frame size
I
mn
630 A
(21) Tripping characteristic curve for the VT630
(22) Protective curve of ETU (electronic trip unit))
I
10
I , current settings of long
r
Rated
time delay protection 40 °C
current I
n
A/B/C phase
400 A 400 A
500 A 500 A
630 A 630 A
2
t ON
Instantaneous short-circuit protection I
For power distribu-
tion protection
N pole A/B/C phase
400 A 4000 A
500 A 5000 A
630 A 6300 A
For motor protection
N pole A/B/C phase N pole
4000 A 4800 A 4800 A
5000 A 6000 A 6000 A
6300 A 7560 A 7560 A
2
I t OFF
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i
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