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BETA Switching
Transformers, Bells and Socket Outlets
4
AC2 4 power supply units
10/8
Siemens ET B1 · 10/2008
10
■
Overview
The electronic power supply unit provides a 24 V DC supply to systems
with an operational voltage of 85 to 265 V AC or 85 to 300 V DC. The
device operates in the lower class for minimum power supply with a
safety extra-low voltage.
In the event of short circuits and high capacitive loads, the power
supply unit detects the overcurrent as soon as it is activated and
shuts down immediately.
It switches back on after 2.5 seconds. The electronic power supply
unit is suitable for supplying the 5TT7 1 GSM alarm modules within
a supply voltage range of 150 to 230 V AC.
Power supply units for direct voltages with rectifiers are used to
supply gongs, bells, door openers, switching relays, remote control
switches, Insta contactors or for safety extra-low voltage systems
(
SELV) in continuous operation. They are protected against short
circuit or moderate overload by a PTC resistor. If tripped, the power
supply unit must be switched off for approx. 30 minutes to allow the
PTC resistor time to cool down.
■
Benefits
•
Expanded applications due to safety extra-low voltage SELV.
Electronic power supply unit
•
Smallest electronic power supply unit in the lower power class
in 2 MW. This saves valuable space in distribution boards
•
Universal applications in many systems, thanks to wide range
voltage supply of 85 to 265 V AC or 85 to 300 V DC
•
Interference suppression to limit value Class B (lower limit)
even meets the requirements for residential buildings.
Power supply units with bridge rectifiers
•
The power supply units are IMQ and VDE approved. This
ensures continuous operation.
■
Technical specifications
4
AC2 400
4
AC2 401
4
AC2 402
Standards
EN 61558-2-6
EN 60068-2,
EN 61558-1,
EN 61000-4
Certifications
EN 61558-2; IMQ
--
Rated operational power P
s
W 24
43
8.4
Rated operational voltage U
e
V AC 230
85 ... 265
V DC --
85 ... 300
Permissible operational voltage
For the 5TT7 1 GSM alarm modules
V AC/DC --
150 ... 265
Operating range
At 50/60 Hz
× U
e
0.9 ... 1.1
--
Rated frequency
Hz
50
50/60
Operating frequency range
Hz
48 ... 52
--
Rated secondary voltage U
sec
V DC 12
24
24
± 5 %
Rated secondary current
I
sec
A DC 2.0
1.8
0.35
Current limitation
PTC
Electronic overload
protection
Residual ripple
mV
--
< 100
Rated power dissipation P
v
In no-load operation
W 5
6
--
At rated load
W 10
15
--
Hum-free
Core molded
Yes
--
Safe isolation
Creepage distances and clearances mm 8
> 5.5
Insulation class
B
--
Test voltage
Primary against secondary winding
50
Hz, 1 min
kV
> 4
--
Insulation resistance
kV
--
4
Rated impulse withstand
voltage/degree of pollution
Acc. to IEC 60664-1
--
6
kV/2
Static discharge
Acc. to IEC/EN 61000-4-2
kV
--
8
RF irradiation
Acc. to IEC/EN 61000-4-3
V/m --
10
Transient overvoltage (burst)
Acc. to IEC/EN 61000-4-4
kV
--
4
Transient overvoltage (surge)
Acc. to IEC/EN 61000-4-5
•
Supply lines A1, A2
kV
--
1
•
A1/A2 and ground
kV
--
2
RF, conducted disturbance
Acc. to IEC/EN 61000-4-6
V
--
10
Interference suppression to lower limit class
Acc. EN 61000-6-3
--
Complied with
Terminals
•
Screw (slotted-head)
--
M2,5
•
± screw (Pozidriv)
1
--
Conductor cross-sections
•
Rigid
mm
2
1.5 ... 6
0.5 ... 2.5
•
Flexible, with end sleeve, min.
mm
2
0.75
0.5 ... 1.5
Permissible ambient temperature
°C
-10 ...
+40
-20 ...
+60
Permissible humidity
%
80
Resistance to climate
Acc. to IEC/EN 60068-1
--
20/045/04
Resistance to vibrations
Frequency 10 ... 55 Hz
Acc. to IEC/EN 60068-2-6
mm --
0.35
amplitude
Degree of protection
Acc. to EN 60529
IP20, with connected conductors
Safety class
Acc. to EN 61140
II
© Siemens AG 2008