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Configured for high-efficiency logic rail generation and voltage regulation within variable frequency drive and substation automation assemblies, the ABB DSPP4LT 1KHL01223R0002 (DSPP4LT Power Supply Module) provides direct physical/electrical execution. This compact 1 kW hardware component converts wide-range alternating current inputs into a continuous, regulated 24 VDC output to energize internal gate drivers, control mainboards, and interface transceivers under part number 1KHL01223R0002.
| Parameter | Specification |
|---|---|
| Model | DSPP4LT |
| Part Number | 1KHL01223R0002 |
| Brand | ABB |
| Origin | Switzerland |
| Weight | 0.8 kg |
| Dimensions | 120 mm x 45 mm x 110 mm |
| Operating Temp | -20 to +70 deg C |
| Storage Temp | -40 to +85 deg C |
| Humidity Range | 0 to 95 % RH, non-condensing |
| Input Voltage Range | 100-240 VAC |
| Input Current | Up to 4.2 A |
| Output Voltage | 24 VDC |
| Continuous Output Current | 41.7 A |
| Peak Output Current | 50 A |
| Rated Output Power | 1 kW |
| Efficiency | >90 % |
| Power Consumption (No Load) | <10 W |
| Protection Rating | IP20 |
| MTBF | >50,000 hours |
The DSPP4LT manages localized power stabilization vectors to support active processing tracks across the internal drive or automation chassis. To prevent switching-frequency transients and line voltage sags from disrupting high-speed memory blocks or optical link nodes, the onboard capacitive and inductive filtering infrastructure conditions the logic rails to optimize backplane bus communication velocity. This constant voltage tracking prevents data bit errors during steep load transitions, supporting continuous communication line execution and maintaining uniform response speeds under a full 41.7 A load. The regulated 24 VDC distribution channels expand modular I/O density scaling options across connected devices. Because the board operates as a hardware supply utility layer, it maintains strict firmware flash compatibility across all connected control boards, ensuring processor configuration files and flash blocks execute normally without sensing electrical transit noise from the power lines.
Q: How does the filtering performance of the DSPP4LT shield backplane bus communication velocity from switching noise?
A: The DSPP4LT implements localized high-frequency decoupling loops and multi-stage inductive filters that maintain an efficiency rating above 90%. This network dampens common-mode voltage spikes and electromagnetic noise generated by surrounding power components, preventing electrical noise from entering the control logic planes and disrupting the backplane bus communication velocity.
Q: What physical safety states are triggered if the continuous output current exceeds the 41.7 A structural limit?
A: If the load demand spikes past the 41.7 A rating toward the 50 A peak threshold for an extended period, internal thermal monitoring circuits clamp the voltage output. The primary control processor senses this voltage drop as an immediate power supply fault, causing it to log a diagnostic timeout event and open the main line breaker to protect the internal circuitry.

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