Siemens 3VT Instrucciones De Servicio página 10

Operating Instructions
(20)
Rated current Rated
of frame size current
I I
mn n
160 A
250 A 200 A
250 A
(21) Tripping characteristic curve for VT250
(22) Protective curve of ETU (electronic trip unit)
(20)
I
10
I , current settings of long-
r
time delay protection 40 °C
A/B/C phase N pole
112 ~ 160 A 112 ~ 160 A
140 ~ 200 A 140 ~ 200 A
175 ~ 250 A 175 ~ 250 A
2
t ON
Instantaneous short-circuit protection I
For power distribu-
For motor protection
tion protection
A/B/C phase N pole A/B/C phase
1600 A 1600 A
2000 A 2000 A
2500 A 2500 A
2
I
i
N pole
1920 A 1920 A
2400 A 2400 A
3000 A 3000 A
t OFF
A5E00817855-01
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