Input | |
Input | DC voltage |
Supply voltage | |
| 600 ... 600 V |
| startup from 340 V DC; derating necessary at 300 ... 400 V DC and 824 ... 900 V DC |
Input voltage | |
| 300 ... 900 V |
Overvoltage resistance | Shutdown at Vin > 900 V DC |
Input current | |
| 0.85 A |
Switch-on current limiting (+25 °C), max. | 8 A |
IІt, max. | 0.02 AІ·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 Vout DC | 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 function Output voltage adjustable | Yes |
Output voltage setting | via potentiometer; max. 480 W |
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 |
| +60 ... +70 °C: Derating 5.5%/K |
Supplied active power typical | 480 W |
Short-term overload current | |
| 40 A |
| 60 A |
Duration of overloading capability for excess current | |
| 150 ms |
| 25 ms |
Constant overload current | |
| 23 A |
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 |
Property of the output Short-circuit proof | Yes |
Short-circuit protection | Alternatively, constant current characteristic approx. 22 A or latching shutdown |
Enduring short circuit current RMS value | |
| 22 A |
Overcurrent overload capability in normal operation | 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 |
Galvanic isolation | Protective extra low output voltage Vout according to EN 60950-1 and EN 50178 |
Protection class | Class I |
CE mark | Yes |
UL/cUL (CSA) approval | cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259 |
Explosion protection | - |
FM approval | - |
CB approval | Yes |
Marine approval | GL |
Degree of protection (EN 60529) | IP20 |
EMC | |
Emitted interference | EN 55022 Class A (emission) |
Supply harmonics limitation | - |
Noise immunity | EN 61000-6-2 |
Operating data | |
Ambient temperature | |
| -25 ... +70 °C |
| with natural convection |
| -40 ... +85 °C |
| -40 ... +85 °C |
Humidity class according to EN 60721 | Climate class 3K3, no condensation |
Mechanics | |
Connection technology | screw-type terminals |
Connections | |
| DC input, +, -, PE: 1 screw terminal each for 0.2 ... 6/4 mmІ single-core/finely stranded |
| +, -: 2 screw terminals each for 0.2 ... 6/4 mmІ single-core/finely stranded |
| Alarm signals: 2 screw terminals for 0.14 ... 1.5 mmІ single-core/finely stranded |
Width of the enclosure | 90 mm |
Height of the enclosure | 125 mm |
Depth of the enclosure | 125 mm |
Required spacing | |
| 50 mm |
| 50 mm |
| 0 mm |
| 0 mm |
Weight, approx. | 1.2 kg |
Product feature of the enclosure housing for side-by-side mounting | Yes |
Installation | Snaps onto DIN rail EN 60715 35x7.5/15 |
Mechanical accessories | Device identification label 20 mm Г— 7 mm, pale turquoise 3RT1900-1SB20 |
MTBF at 40 °C | 622 277 h |
Other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |