SIEMENS
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Siemens KT 10.1 · 2016
9
Special designs, special uses
Battery charging
3-phase, 12 V DC
■
Overview
The SITOP PSU3800 3-phase power supplies are suitable for
battery charging, thanks to their constant-current characteristic.
For other applications, the output characteristic can also be
switched to latching shutdown. The three-phase, wide-range
input enables them to be used worldwide. The slim design
requires little space on the DIN rail. Installation gaps are not
required.
■
Technical specifications
Article number
6EP3424-8UB00-0AY0
Product
SITOP PSU3800
Power supply, type
12 V/20 A
Input
Input
3-phase AC
Rated voltage value
V
in rated
400 ... 500 V
Voltage range AC
320 ... 575 V
Wide-range input
Yes
Mains buffering at
I
out rated
, min.
15 ms; at
V
in
= 400 V
Rated line frequency 1
50 Hz
Rated line frequency 2
60 Hz
Rated line range
47 ... 63 Hz
Input current
• at rated input voltage 400 V
0.7 A
• at rated input voltage 500 V
0.6 A
Switch-on current limiting (+25 °C),
max.
16 A
I²t, max.
0.8 A²·s
Built-in incoming fuse
none
Protection in the mains power input
(IEC 898)
Required: 3-pole connected
miniature circuit breaker 6 ... 16 A
characteristic C or circuit breaker
3RV2011-1DA10 (setting 3 A) or
3RV2711-1DD10 (UL 489)
Output
Output
Controlled, isolated DC voltage
Rated voltage
V
out
DC
12 V
Total tolerance, static ±
3 %
Static mains compensation, approx.
0.1 %
Static load balancing, approx.
0.2 %
Residual ripple peak-peak, max.
100 mV
Spikes peak-peak, max.
(bandwidth: 20 MHz)
200 mV
Adjustment range
12 ... 14 V
Product function Output voltage
adjustable
Yes
Output voltage setting
via potentiometer; max. 240 W
Status display
Green LED for 12 V OK
Signaling
Relay contact (NO contact, rating
60 V DC/ 0.3 A) for 12 V OK
On/off behavior
No overshoot of
V
out
(soft start)
Startup delay, max.
2.5 s
Voltage increase time of the output
voltage maximum
500 ms
Rated current value
I
out rated
20 A
Current range
0 ... 20 A
• Note
+60 ... +70 °C: Derating 2%/K
Supplied active power typical
240 W
Constant overload current
• on short-circuiting during the start-
up typical
22 A
Parallel switching for enhanced
performance
Yes; switchable characteristic
Numbers of parallel switchable units
for enhanced performance
2
Efficiency
Efficiency at
V
out rated
, I
out rated
,
approx.
91 %
Power loss at
V
out rated
, I
out rated
,
approx.
24 W
Closed-loop control
Dynamic mains compensation
(
V
in rated
±15 %), max.
0.1 %
Dynamic load smoothing
(
I
out
: 50/100/50 %),
U
out
± typ.
1 %
Load step setting time 50 to
100%, typ.
0.2 ms
Load step setting time 100 to
50%, typ.
0.2 ms
Dynamic load smoothing
(
I
out
: 10/90/10 %),
U
out
± typ.
2 %
Load step setting time 10 to 90%, typ.
0.2 ms
Load step setting time 90 to 10%, typ.
0.2 ms
Setting time maximum
10 ms
Article number
6EP3424-8UB00-0AY0
Product
SITOP PSU3800
Power supply, type
12 V/20 A
© Siemens AG 2016