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PW482-50

The Yokogawa PW482-50 is a highly reliable, DIN-rail mounted DC Power Supply Unit designed specifically for industrial process control applications. Its primary function is to convert a standard AC line input into a stable, well-regulated 24 VDC output to power downstream devices such as distributed control system (DCS) modules, programmable logic controllers (PLCs), transmitters, and other field instrumentation within a control panel or cabinet.

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Technical Parameters
Category
Specification
Model Number
PW482-50
Input
Voltage: 100 - 240 VAC, 50/60 Hz (Auto-ranging).
Power Consumption: Approx. 50 VA (at 100 VAC).
Output
Voltage: 24 VDC (±0.5%)
Rated Current: 2.1 A
Rated Power: 50 W (24 VDC x 2.1 A)
Ripple & Noise: < 120 mV peak-to-peak.
Regulation: Line regulation: < ±0.2%. Load regulation: < ±0.5%.
Redundancy Function
Supported: Yes, requires an external redundant diode module (e.g., Yokogawa PRD11).
Diode Voltage Drop: Typically ~0.5 V per diode. This must be factored into system voltage design.
General Characteristics
Efficiency: Typically > 75%.
Protection: Overcurrent (Hiccup mode, auto-recovery), Overvoltage protection (latching type).
Status Indicator: Green LED for power-on status.
Mounting: Standard DIN rail (TS35 x 7.5 or 15 mm).
Operating Temperature: -25 to +70 °C (Rated output up to 50°C; derating required above this).
Storage Temperature: -40 to +85 °C.
Humidity: 5 to 95% RH (non-condensing).
Safety Standards: UL 508 / CSA C22.2 No. 14, EN 61131-2.
EMC Immunity: Complies with EU EMC Directive (2014/30/EU).
Physical Specifications
Dimensions (H x W x D): Approx. 90 mm x 50 mm x 98 mm.
Weight: Approx. 0.4 kg.
Connections
Input Terminals: Screw terminals for AC Line (L), Neutral (N), and Ground (⏚).
Output Terminals: Screw terminals for DC+ and DC-