S8VT
3
Operation
Block Diagram
S8VT-F
Engineering Data
Definition of Inrush Current, Start up Time and Hold Time
Overload Protection
The Power supply is provided with an overload protection function
that protect the load and the power supply from possible damage by
over current. When the output current rises above between 105 to
130% (105 to 120% for the 40 A model) of the rated current, the
protection function is triggered, decreasing the output voltage. When
output current falls within the rated range, the overload protection
function is automatically cleared.
De-rating Curve
For UL and CSA the maximum temperature is 60°C
(70°C for the 20 A model)
Overvoltage Protection
5 A and 10 A models
If output voltage exceed the rated voltage more than 25% (50% at
maximum) by some reason, then the output voltage will be
automatic limited for safety.
20 A and 40 A models
If output voltage exceed the rated voltage more than 25% (50% at
maximum) by some reason, then the output voltage will be turned
OFF automatically for safety. To restart the S8VT, turn OFF the input
voltage, wait few minutes, then apply the input power again.
P.E./Chassis
Line Fuses
RFI filter
Control
Module
Opto-isolator
Ouput
Voltage
Control
Module
Vout+
Vout-
AC-PH1
AC-PH2
AC-PH3
Input
Driver
Start up time
Hold up time
Inrush current input application
Input ON
Input OFF
AC input
voltage
AC input
current
Output
voltage
9
5%
9
0%
P
Pmax
50%
60
70 °C
M03E-EN-02B+S8VT+Datasheet.fm Seite 3 Montag, 8. Juni 2009 3:35 15