Description
9229 9947 176 0C
31
2013-03-28
Rating plate
Technical data
Fig. 41
Technical Data
Dimensions and weights
The dimensions of the vacuum circuit-breaker can be taken from the relevant
dimension drawing. If required, these are available from your Siemens
representative.
The weight is given on the rating plate of the vacuum circuit-breaker (see Fig. 40) or
can be taken from the relevant dimension drawing.
Fig. 40
Example – 3AH47 vacuum circuit-breaker rating plate
a
Manufacturer
b
Type designation
c
Works serial number
d
Rated voltage
U
r
e
Rated frequency
f
r
Rated short-circuit breaking
current
I
sc
g
Rated power frequency withstand
voltage
U
d
h
Rated lightning impulse withstand
voltage
U
p
i
Quality control seal
k
Year of manufacture
m Rated operating current
I
r
n
Rated short-circuit duration
t
k
o
Mass m
p
Rated operating sequence
r
Classification to standard
Rated voltage
U
r
kV
17.5*
27.5*
27.5**
Rated operating current
I
r
A
2000
2500
1250, 2000, 2500
1250, 2000, 2500
Rated lightning impulse withstand
voltage (peak value)
U
p
kV
125
170
185
250
200
185
200
Rated power frequency withstand
voltage (effective value)
U
d
kV
50
70
85
105
95
85
95
Rated short-circuit breaking current
I
sc
kA
25 /
31.5
40 / 50
40
25 /
31.5
25
25 /
31.5
25 / 31.5
Rated frequency
Hz
16.7
50/60
Rated operating sequence
A, B
C
A
Mechanical operating cycle in
thousands
60
20
60
20
60
A
O - 3 min - CO - 3 min - CO
B
O - 5 s - CO
C
O - 0.8 s - CO - 30 s - CO
*
one-pole
**
two-pole
