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Description
Application Scenarios
Inside the main control cabinet of a municipal water pumping station, a dozen critical devices—including the main PLC controller, communication modules, and analog input cards for pressure and flow sensors—depend on clean, stable 24VDC power. The local grid is prone to voltage sags and electrical noise. A basic, unregulated power supply would pass these disturbances directly to the sensitive control electronics, causing random resets, measurement errors, and ultimately, pump shutdowns. By installing the ABB SA168 power supply, the system gains a robust first line of defense. The SA168‘s wide input voltage range handles the sags, its filtering suppresses the noise, and its precise regulation holds the output at a steady 24VDC even as loads change. This “clean power” ensures the PLC logic runs without interruption and sensors provide accurate readings, guaranteeing reliable, unattended operation of the pumping station and preventing costly service calls due to power-related faults.
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | SA168 |
| Manufacturer | ABB |
| Product Category | Switch-Mode Power Supply Unit (PSU) |
| Input Voltage Range | 85-264 VAC, 100-370 VDC (Wide range for global use) |
| Input Frequency | 47-63 Hz |
| Output Voltage | 24 VDC (Nominal, regulated) |
| Rated Output Current | e.g., 5A, 10A, 20A (Common ratings define capacity) |
| Rated Output Power | e.g., 120W, 240W, 480W (Voltage * Current) |
| Efficiency | High (>90%), reducing heat generation and energy costs |
| Line/Load Regulation | Excellent regulation for stable output despite input or load changes |
| Protections | Overload, Overvoltage, Short Circuit, Overtemperature |
| Cooling | Convection or forced-air cooling, depending on model |
| Mounting | DIN Rail (35mm, TS35) |
| Safety & EMC | Compliant with IEC/UL/EN standards, low EMI emission |
