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Rectifier
PSR06-W
User Manual
Page 9 (24)
5.2 Electrical function description
Rectifiers of type PSR consist of the following main parts:
1.
Input filter suppressing the feedback of high frequency interference produced by the unit into the
mains as well as for the attenuation of the interference voltages and voltage transients superim-
posed on the mains.
2.
Mains rectifier with switched step-up-converter (operation frequency 100kHz) to transform the
input voltage in a pre-regulated DC voltage of approx. 380V and to control the waveform of input
current (sinusoidal!). An additional function is the limitation of inrush current.
3.
Transistor bridge to transform the 380V
quency of 100KHz.
4.
HF transformer for decoupling of primary and secondary part and to transport the power to sec-
ondary side.
5.
Rectifier diodes to make a DC voltage from high frequency AC voltage.
6.
LC-Filter to reduce the voltage ripple on rectifier output.
7.
Output filter for RFI suppression and to reduce the noise level on DC line.
8.
Internal power supply for supplying of primary and secondary control units with potential decoup-
ling.
9.
Regulation line with decoupling through opto couplers.
10. Adjustment panel for adjustment of output parameters, signals and measurement instruments.
5.2.1 Electrical insulation
Through the construction of the module (also module parts) and separate wiring of mains input and DC output the
SMPS fulfils the following standards:
•
≤ 60V
devices with U
O
coupling acc. to EN 60950 and VDE 0100.
•
devices with U
> 60V
O
5.2.2 Input
A one-pole mains switch is used to switch on and off the unit.
The unit is switched on by a run-up stage which limits the switch-on current to <I
ELTEK VALERE DEUTSCHLAND ©2009
protection against shock current because of low voltage with safe electrical de-
DC
safe electrical decoupling to U
DC
in a pulse width modulated AC voltage with an fre-
DC
= 220V
acc. EN 60950 and VDE 0160.
DC
O
nom
UM_PSR06-W_E_R1.1
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