SWT 3000 Equipment Manual Power Supply
© SIEMENS AG 2006 Edition p3_3_x 08/09 Page - 3
General description
Two different power supplies are available for the SWT 3000 units:
Operating voltage: 24 - 60 V DC 110-250 V DC
115-230 V AC
Converter type: BM3882-7D2
SV B SWT3
LM3882-7D2
SV N SWT3
50W AC-DC/DC-DC converters are used. These are characterized by extremely wide input volt-
age ranges, efficient input filters, 4kV
rms
isolating voltage between input and output and electrically
isolated, individually regulated outputs.
Properties: Benefits:
High efficiency Minimum heat development and low thermal loading
Input/output and output/output Safety in conformance with IEC 60950, VDE 0850
electrically isolated
Wide input voltage ranges Use without matching to the supply voltage
Permanently proof against low Simple handling, optimum equipment self-protection
load and short circuit
No reduction of load Full output power in spec. temperature range
Input under voltage disconnection No malfunctions of the outputs
Temperature monitoring Over temperature protection through disconnection
Closed metal case Additional cooling not necessary
The converters are versatile power supplies suitable for industrial use where particularly high re-
quirements apply. High efficiency which remains practically constant over the entire input voltage
range, maximum reliability, small residual ripple and very good dynamic control properties are the
particular features of these devices. They are suitable for installation in 19" sub racks (DIN 41949-
compliant).
A sub rack can contain two independent SWT 3000 units, in which case each unit requires its own
power supply.
The units must be connected via a socket connector in order to conform with the safety regula-
tions currently applicable.
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