Rating Plate; Technical Data - Siemens 3AH3 Operating Instructions Manual

Fig. 46 Example – vacuum circuit-breaker rating plate 3AH3
Rated voltage* U
r
Rated operating current I
Rated lightning impulse withstand
voltage (peak value) U
p
Rated power frequency withstand
voltage (effective value) U
Rated short-circuit breaking cur-
rentI
sc
Distance between pole centres
Rated operating sequence
Siemens Parts
9229 9860 176 0E
2013-08-22

Rating plate

Technical data

kV 7.2
A 1250, 2500, 3150, 4000
r
kV 60
20
kV
(42)**
d
kA
mm
A O - 3 min - CO - 3 min - CO; standard rated operating sequence
B O - 0.3 s - CO - 3 min - CO; up to I sc = 31.5 kA possible
C O - 0.3 s - CO - 15 s - CO; up to I sc = 31.5 kA possible
* In the event of a rated frequency f r of 50/60 Hz
** On request
Fig. 47 Technical data
Dimensions and weights
The dimensions of the vacuum circuit-breaker can be taken from the relevant dimen-
sion drawing. If required, these are available from your sales representative.
The weight is given on the rating plate of the vacuum circuit-breaker (see Fig. 46) or
can be taken from the relevant dimension drawing.
12 15 17.5
75 95 95
28 36 38
(42)** (42)** (42)**
50, 63
210, 275
A, B, C
Description
a Manufacturer
b Type designation
c Works serial number
d Rated voltage U r
e Rated frequency f r
f 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
24 36 (40.5)**
2500, 1250, 2000,
3150, 2500, 3150,
4000 4000
170
110, 125
(185)**/(195)**
70
50
(85)**/(95)**
40, 50 31.5
275, 300 350
A, B, C A**, B, C**
2500, 3150,
4000
40
350
A, B, C
35