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

Vacuum circuit-breaker module.
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Fig. 28
Example – vacuum circuit-breaker module rating plate 3AK
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
d
Rated short-circuit breaking currentI
Distance between pole centres
Rated operating sequence
9229 9923 176 0B
2013-09-09

Rating plate

Technical data

r
sc
A
O - 3 min - CO - 3 min - CO
B
CO - 30 min - CO
*
In the event of a rated frequency f r of 50/60 Hz
**
4000 A only with additional cooling
***
On request
Fig. 29
Technical data
Dimensions and weights
The dimensions of the vacuum circuit-breaker module can be taken from the rele-
vant dimension drawing. If required, these are available from your sales represent-
ative.
The weight is given on the rating plate of the vacuum circuit-breaker module (see
Fig. 28) or can be taken from the relevant dimension drawing.
a
b
c
d
e
f
g
h
i
k
m Rated operating current I r
n
o
p
r
kV
7.2
A
1250, 2000, 2500, 3150, 4000**
kV
60
20 (32,
kV
28 (42***)
42***)
kA
40/50
mm
Description
Manufacturer
Type designation
Works serial number
Rated voltage U r
Rated frequency f r
Rated short-circuit breaking current I sc
Rated power frequency withstand
voltage U d
Rated lightning impulse withstand
voltage U p
Quality control seal
Year of manufacture
Rated short-circuit duration t k
Mass m
Rated operating sequence
Classification to standard
12
17.5
1250, 2000,
75
95
38 (42***)
210
A
17.5
2500
95
38 (42***)
40
210
B
27

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