MEAN WELL OWA-90U-54-P1M is a moistureproof AC/DC LED power supply with 54 VDC, 1.67 A and 90.18 W rated output. It supports constant-voltage and constant-current operation within the specified LED operating region. This U version uses a NEMA 1-15P AC plug and 90–264 VAC input. The P1M suffix specifies the 2.5 mm ID barrel output plug. The IP67 rating is for the power body; connector protection must suit the installation.
Download MEAN WELL OWA-90U Datasheet (PDF)Download MEAN WELL Installation Manual (PDF)Download MEAN WELL DC Plug Converter Guide (PDF)Catalog location: PDF pages 11–16; specification table on page 12, curves on page 13, and connection drawing on page 15.
Model and output
| Parameter |
Specification |
| Model and code |
OWA-90U-54-P1M — OWA-90U; U identifies the US AC plug version; 54 identifies the nominal DC output voltage. P1M selects the specified 2.5 mm ID barrel plug. |
| Output mode |
Constant-voltage + constant-current external AC/DC LED power supply. |
| Rated output voltage |
54 VDC |
| Rated output current |
1.67 A |
| Rated output power |
90.18 W (catalog rating) |
| Constant-current region |
32.4–54 VDC. Use the specified constant-current region for direct LED operation; select an LED string within this voltage window and observe the current limit. |
| Maximum ripple and noise |
350 mVp-p; measured at 20 MHz bandwidth with a 12-inch twisted pair and parallel 0.1 μF / 47 μF capacitors. |
| Voltage tolerance |
±1%; includes initial setup tolerance, line regulation and load regulation. |
| Line and load regulation |
Line: ±0.5%; load: ±0.5%. |
Input and electrical performance
| Parameter |
Specification |
| Input voltage |
90–264 VAC or 127–370 VDC. For DC operation, verify the manufacturer’s connection instructions and appropriate input connection for the delivered model. |
| Input frequency |
47–63 Hz |
| Typical efficiency |
89.5% at 115 VAC; 91% at 230 VAC. |
| Typical power factor |
Built-in active PFC; >0.98 at 115 VAC; >0.96 at 230 VAC at full load. |
| THD |
<20% at load ≥60%, 115 or 230 VAC. |
| Typical AC input current |
0.95 A at 115 VAC; 0.5 A at 230 VAC |
| Setup and rise time |
Setup 500 ms / rise 80 ms at 95% load, 115 or 230 VAC. Setup time is measured at cold first start; turning the power supply ON/OFF may increase setup time. |
| Typical hold-up time |
16 ms at full load, 115 or 230 VAC. |
| Typical inrush current |
Cold start: 30 A at 115 VAC; 60 A at 230 VAC; both 550 μs width at 50% peak current. |
| Leakage current |
<0.125 mA at 120 VAC; <0.25 mA at 240 VAC. |
| No-load consumption |
<0.15 W |
| Circuit-breaker reference |
3 / 6 units on type B / type C 16 A circuit breakers at 230 VAC, respectively; verify the actual breaker and installation conditions. |
Protection and operating conditions
| Parameter |
Specification |
| Overcurrent protection |
95–108%; constant-current limiting, automatically recovers after the fault is removed. |
| Short-circuit protection |
Hiccup mode, automatically recovers after the fault is removed. |
| Overvoltage protection |
59–66 V; output shuts down. Remove the fault and re-power to recover. |
| Overtemperature protection |
Output shuts down. Remove the overtemperature condition and re-power to recover. |
| Ambient temperature |
−40 to +70°C, subject to derating. Operation from −40 to −25°C is specified only at 230 VAC. |
| Cooling and load derating |
Fanless free-air convection with the recommended horizontal mounting. 100% load through +50°C, decreasing to 50% at +70°C. Apply thermal and input/load limits together; the upper ambient limit is not a full-load rating. |
| Input/load curve |
At 60 Hz: 80% load at 90 VAC, rising to 100% at 100 VAC and remaining at 100% through 264 VAC. |
| Humidity and storage |
Working: 20–95% RH, non-condensing. Storage: −40 to +80°C, 10–95% RH. |
| Temperature coefficient |
±0.03%/°C over 0–50°C. |
| Vibration |
10–500 Hz, 5 G, 12 minutes per cycle, 72 minutes each along X, Y and Z axes. |
| Altitude derating |
Above 2000 m, reduce allowable ambient temperature by 3.5°C per additional 1000 m for this fanless design. |
Safety and compliance
| Parameter |
Specification |
| Catalog safety and construction |
Class II power unit, no FG connection; fully silicone-potted plastic enclosure with 94V-0 flame-retardant housing. IP67 applies to the power body, not an unrestricted waterproof rating for plugs or the complete installation. Class 2 power unit. UL8750 listed; Suitable for dry and damp locations as catalogued. |
| Energy-efficiency declarations |
Energy efficiency Level VI; EISA 2007 / DoE and NRCan requirements are stated in the catalog. |
| EMC emissions |
FCC Part 15. |
| Insulation |
Input-to-output withstand voltage: 3.75 kVAC. Input-to-output isolation resistance: 100 MΩ at 500 VDC / 25°C / 70% RH. |
Connections and installation
| Parameter |
Specification |
| Dimensions and mounting |
171 × 63 × 37.5 mm (L × W × H); case PWM-90P, drawing tolerance ±1 mm; two Ø4.5 mm mounting holes. Follow the recommended horizontal mounting and dimensioned drawing. Retain the supplied cable/ferrite arrangement where fitted. |
| AC connection |
NEMA 1-15P male; SVT 18 AWG × 2 conductors, 1500 ±20 mm. |
| DC connection |
Factory P1M tuning-fork barrel plug: 2.5 mm ID × 5.5 mm OD × 11 mm long, center positive / outer negative; UL2464 16 AWG × 2 conductors, 300 ±20 mm. P1M versions are catalogued only for 20/24/30/36/42/48/54 V. Match the mating connector and its current rating to the actual load. |
| Catalog packing reference |
0.83 kg per unit (830 g); this is the catalog PACKING reference, not a measured net weight or a shipping-parcel weight. |
| MTBF |
3044.3 / 292.9 thousand hours minimum, Telcordia SR-332 / MIL-HDBK-217F at 25°C, respectively. |
Disconnect AC power before connecting the DC plug, installing, cleaning or servicing, and prevent accidental reconnection. Check voltage, polarity, connector size and current rating before use; never force an incompatible plug. Keep connections secure and protect cables from damage. Provide ventilation and leave 10–15 cm clearance when an adjacent device is a heat source; do not stack objects on the unit. Follow the catalog’s horizontal mounting and load curves; nonstandard mounting or high ambient temperature may require additional derating. Keep plugs and connections appropriately protected; do not immerse the unit in water. Do not open the enclosure. Damaged external cables must be replaced by the manufacturer, a service agent or similarly qualified personnel. Verify insulation, interconnections and EMC in the final equipment.
Separate plug converters
This SKU already has the P1M barrel output. For a P1M input, the guide lists DC PLUG-P1M-P1MR (right-angle 2.5 mm ID × 5.5 mm OD × 11 mm), DC PLUG-P1M-P1J (straight 2.1 mm ID × 5.5 mm OD × 11 mm), DC PLUG-P1M-P1JR (right-angle 2.1 mm ID × 5.5 mm OD × 11 mm) and DC PLUG-P1M-R7B (KYCON KPPX-4P). Confirm mechanical fit, polarity and current compatibility for this actual model before ordering; these are separate accessories and do not increase its rated current. The guide’s OWA-90U–200U R7B-to-barrel converters describe the standard R7B configuration, not a direct fit to this P1M output.
Specification notes
Unless otherwise specified, catalog parameters are measured at 230 VAC input, rated load and 25°C ambient. Typical efficiency, power factor and time values depend on operating conditions; protection thresholds do not authorize continuous overload. The manufacturer catalog states a 5-year warranty; applicable manufacturer terms govern.
