| SITOP PSU400M 20 A DC/DC TRANSFORMER INPUT: 600 V DC OUTPUT: 24 V/20 A DC |
Technical specifications | |
Product | SITOP PSU400M |
Power supply, type | 24 V/20 A |
Input | |
Input | DC voltage |
Supply voltage / at DC | 600… 600 V |
Voltage range | |
| (startup from approx. 400 V DC); derating necessary at 200 ... 300 V DC and 820 ... 900 V DC |
Input voltage / at DC | 200… 900 V |
Overvoltage resistance | Shutdown at Vin > 900 V DC |
Input current / at DC / at nominal level of the input voltage 600 V / nominal value | 0.85 A |
Switch-on current limiting (+25 °C), max. | 8 A |
Inrush current A²s | 0.02 A²·s |
Built-in incoming fuse | yes, cut-off capacity 20 kA; L/R < 2 ms ("+" and "-" input) |
Output | |
Output | controlled, isolated DC voltage |
Rated voltage | 24 V |
Total tolerance, static ± | 3 % |
Static mains compensation, approx. | 0.3 % |
Static load balancing, approx. | 0.3 % |
Residual ripple peak-peak, max. | 150 mV |
Residual ripple peak-peak, typ. | 30 mV |
Spikes peak-peak, max. (bandwidth: 20 MHz) | 200 mV |
Spikes peak-peak, typ. (bandwidth: 20 MHz) | 100 mV |
Adjustment range | 24… 28.8 V |
Product feature / output voltage adjustable | Yes |
Output voltage setting | via potentiometer |
Status display | Green LED for 24 V OK, green flashing LED for start delay |
Signaling | Relay contact (NO contact, rating 60 V DC/ 0.3 A; 30 V DC/1 A) for 24 V OK |
On/off behavior | No overshoot of Vout (soft start) |
Startup delay, max. | 0.1 s |
| 10 s adjustable using switch |
Voltage increase time / of the output voltage / maximum | 150 ms |
Rated current value Iout rated | 20 A |
Current range | 0… 20 A |
| 9 A up to +70 °C |
delivered active power / typ. | 480 W |
short-term overload current / at short-circuit during run-up / typical | 40 A |
Duration of overloading ability for excess current / on short-circuiting during the start-up | 150 ms |
Parallel switching for enhanced performance | Yes |
| switchable characteristic |
Numbers of parallel switchable units for enhanced performance | 2 |
Efficiency | |
Efficiency at Vout rated, Iout rated, approx. | 95 % |
Power loss at Vout rated, Iout rated, approx. | 25 W |
Closed-loop control | |
Dynamic mains compensation (Vin rated ±15 %), max. | 1.5 % |
Dynamic load smoothing (Iout: 50/100/50 %), Uout ± typ. | 1.5 % |
Load step setting time 50 to 100%, typ. | 1 ms |
Load step setting time 100 to 50%, typ. | 1 ms |
Setting time / maximum | 5 ms |
Protection and monitoring | |
Output overvoltage protection | < 33 V |
Current limitation, typ. | 22 A |
Characteristic feature of the output / short-circuit protected | Yes |
Short-circuit protection | Alternatively, constant current characteristic approx. 22 A or latching shutdown |
Enduring short circuit current / Effective level / typical | 22 A |
| overload capability 150 % Iout rated up to 5 s/min |
Overload/short-circuit indicator | LED yellow for "overload", LED red for "latching shutdown", red LED flashing for "Overtemperature" |
Safety | |
Primary/secondary isolation | Yes |
Potential separation | Safety extra low output voltage Vout according to EN 60950-1 and EN 50178 |
Protection class | Class I |
CE mark | Yes |
UL/CSA approval | Yes |
UL/cUL (CSA) approval | cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259 |
Explosion protection | - |
FM approval | - |
CB approval | No |
Marine approval | GL and ABS in process |
Degree of protection (EN 60529) | IP20 |
EMC | |
Emitted interference | EN 55022 Class A (emission) |
Supply harmonics limitation | - |