2
2. Technical data
2.1
Type spectrum
2.1.1
Type designation
3AF 01 vacuum circuit-breakers are identified by a
machine-readable product designation made up of a
series of numbers and letters, whose first 8 places can be
found on the name plate of the circuit-breakers. The
design code stated on the name plate together with the
machine-readable product designation provides a full
description of the circuit-breaker. The figure below shows
what the individual places of the basic machine-readable
product designation stand for:
NOTE
In the event of any queries, state the type designation,
design code, year of manufacture and the serial
number.
2.1.3
Dimensions and weights
The dimensions of the vacuum circuit-breaker are shown
in the relevant drawings, which can be ordered through
your Siemens office.
The weight can be found on the breaker rating plate, in
Fig. 2; or in the relevant drawing.
2.2
Characteristic values
Definitions:
Opening time
= the interval of time between the
initiation of the opening operation and the instant when
the contacts separate in all poles.
Arcing time
= the interval of time between the instant of
the first initiation of an arc and the instant of final arc
extinction in all poles.
Break time
= the interval of time between the initiation
of the opening release and the instant of final arc
extinction in all poles. (= opening time + arcing time).
Close-open time
= the interval of time (in a make-break
operating cycle) between the instant when the contacts
touch in the first pole in the closing process and the
instant when the arcing contacts separate in all poles in
the subsequent opening process.
Dead time
= The interval of time between final arc
extinction in all poles in the opening operation and the
first re-establishment of current in any pole in the
subsequent closing operation.
Closing time
= the interval of time between the
initiation of the closing release and the instant when the
contacts touch in all poles.
Besides the basic machine-readable product designation
of the circuit-breaker stated on the name plate (Fig. 2); it
also contains the following information.
s
Type designation
Design code
Serial number
Year of manufacture
Rated voltage / Frequency
Rated normal current
Rated s.c. breaking current
Rated s.c. duration
Rated light
•
imp. with. voltage
Weight
Purchase Order No. & Date
Rated operating duty
Made in India
03-95307-001
Fig. 2: Name plate
For abbreviations of rated characteristics, refer Table 1
below.
The name plate, is located on the mechanism housing of
the circuit-breaker.
2.1.2
Rated data
Type
Rated
Rated
Rated
Rated
Rated
Rated power
Rated lightning
Pole
Weight
designation voltage
short-circuit
short-circuit
short-circuit current
frequency
impulse
centre
(approx.)
making current breaking current
duration
withstand voltage withstand voltage distance
U in kV
I
ma
in kA
I
sc
in kA
t
th
in s
I
n
in A
in kV
U
w
in kV
in mm
in kg
3AF 01 42
36
66
26.3
3
1250
70
170
725±5
650
3AF 01 43
36
66
26.3
3
1600
70
170
725±5
650
3AF 01 44
36
66
26.3
3
2000
70
170
725±5
650
3AF 01 45
36
62.5
25
3
1600
70
170
725±5
650
3AF 01 47
36
62.5
25
3
2000
70
170
725±5
650
Table 1: 3AF 01 Technical Data
Basic designation &
Rated voltage,
Rated short circuit
breaking current
Rated normal
current
Electrical
autoreclosing
3 A
F
0
1
4
3
-
4
