MEAN WELL OWA-90U-12 is an OWA-90U series moistureproof LED power adapter with a 12 V DC output rated at 7.5 A and 90 W. It provides constant-voltage and constant-current operating regions for compatible LED systems. The fanless, silicone-potted Class II housing has an IP67 rating excluding the DC connector. Input-voltage and ambient-temperature derating apply.
Product Datasheet
Download MEAN WELL OWA-90U Datasheet (PDF)
The OWA-90U section is on PDF pages 11, 12, 13, 14, 15, 16. Refer to the complete mechanical drawings and notes when planning installation.
Model-Specific DC Output
Complete model
OWA-90U-12
Nominal DC output
12 V
Rated output current
7.5 A
Catalogue-rated output power
90 W
Ripple and noise, maximum
150 mVp-p; see measurement conditions.
Voltage tolerance
±4.0%, including set-up, line and load regulation.
Line regulation
±0.5%.
Load regulation
±1.5%.
Constant-current region
7.2–12 V, as specified for this complete model.
Set-up / rise time
500 / 80 ms at 230 VAC; 500 / 80 ms at 115 VAC, measured at 95% load.
Hold-up time, typical
16 ms at full load, at both 115 and 230 VAC.
For an LED module with its own DC/DC driver, the adapter normally operates in the constant-voltage region. Direct LED loading can use the specified 7.2–12 V constant-current region. Match the load and forward-voltage range to the complete system; operation below the constant-current region may enter hiccup protection.
The efficiency-versus-load curves in this family section use the 48 V model as their example. They are not an efficiency guarantee for every output voltage or load.
Input and Efficiency
Input voltage / frequency
90–264 VAC or 127–370 VDC; AC frequency 47–63 Hz.
Efficiency, typical
88% at 115 VAC; 89% at 230 VAC.
AC current, typical
0.95 A at 115 VAC; 0.5 A at 230 VAC.
Cold-start inrush, typical
30 A at 115 VAC; 60 A at 230 VAC; pulse width 550 µs measured at 50% of peak current.
Leakage current
<0.125 mA at 120 VAC; <0.25 mA at 240 VAC.
No-load consumption
<0.15 W.
Active PFC / typical power factor
PF >0.98 at 115 VAC and >0.96 at 230 VAC, at full load.
Total harmonic distortion
<20% at output loads of at least 60%, at 115 or 230 VAC.
16 A circuit breaker at 230 VAC
Maximum 3 units on a type B breaker or 6 units on a type C breaker, as listed in this series catalogue.
Protection
Overcurrent
95–108%; constant-current limiting, automatic recovery after fault removal.
Short circuit
Hiccup mode; automatic recovery after fault removal.
Overvoltage
15–17 V; output shuts down. Re-power on to recover.
Overtemperature
Output shuts down. Re-power on to recover.
Operating Conditions and Derating
Working ambient
-40 to +70°C, subject to the horizontal-mounting derating curve.
Horizontal thermal derating
The curve shows 100% load through 50°C, decreasing to 50% at 70°C. The -40 to −25°C portion is marked for 230 VAC input only.
Input-voltage derating
At 60 Hz, the curve shows 80% load at 90 VAC and 100% from 100 to 264 VAC.
Cooling / recommended orientation
Free-air convection without a fan. Install horizontally with the flat base supported, as shown in the installation drawing.
Working humidity
20–95% RH, non-condensing.
Storage temperature / humidity
−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 along each X, Y and Z axis.
High-altitude ambient derating
For fanless operation above 2000 m, reduce the allowable ambient temperature by 3.5°C per additional 1000 m, as stated in the catalogue note.
Safety, EMC and Insulation
Catalogue safety listings
UL 8750 listed for dry and damp locations. CSA C22.2 No. 250.13-12 is also listed for this voltage version.
Class 2 scope
The series Class 2 power-unit claim excludes the 12 V and 15 V models.
EMC emissions
FCC Part 15, as listed in this catalogue.
Energy-efficiency references
Level VI; EISA 2007 / US Department of Energy and NRCan requirements are listed in the catalogue.
Insulation / grounding
Class II design, without FG; input wiring has two conductors.
Ingress protection
IP67 applies to the potted power-unit body; the DC connector is excluded.
Dielectric withstand
Input to output: 3.75 kVAC.
Insulation resistance
Input to output: 100 MΩ at 500 VDC, 25°C and 70% RH.
The listed standards and classifications apply to the adapter within the catalogue scope. Suitability and compliance of the assembled equipment depend on its installation and application.
Dimensions, Cables and Connections
Enclosure dimensions
171 × 63 × 37.5 mm (L × W × H), case PWM-90P; drawing general tolerance ±1 mm.
Enclosure construction
Silicone-potted plastic case; 94V-0 flame-retardant material is specified.
Mounting holes
Two Ø4.5 mm holes on diagonally opposed mounting tabs. The drawing places each hole center 5 mm from the adjacent tab edges.
AC input plug
NEMA 1-15P male.
AC input cable
SVT 18 AWG × 2C, 1500 ±20 mm.
Standard DC output connector
Locking power DIN 4-pin, KYCON KPPX-4P or equivalent: pins 1 and 4 are +V; pins 2 and 3 are −V.
Standard output cable
UL2464 18 AWG × 4C, 300 ±20 mm.
Reference mass per unit
830 g, from the explicit single-unit PACKING value on catalogue page 12; not a measured net or shipping weight.
Connector Options and Ordering
This 12 V or 15 V version uses the standard locking DIN 4-pin output. The catalogue restricts its -P1M alternative to 20–54 V models.
Measurement and Reliability Notes
Default measurement conditions
Unless stated otherwise: 230 VAC input, rated load and 25°C ambient.
Ripple/noise measurement
20 MHz bandwidth, using a 12-inch twisted-pair lead terminated by 0.1 µF and 47 µF capacitors in parallel.
Start-up condition
Set-up time is measured from a cold first start. Repeated power cycling may increase the set-up time.
MTBF, minimum calculated reference
3044.3 K hours under Telcordia SR-332 (Bellcore); 292.9 K hours under MIL-HDBK-217F at 25°C.
Catalogue warranty statement
5 years, as stated in the series catalogue.
Catalogue reference
OWA-90U, revision 2024-10-16, physical pages 11–16 of the linked combined PDF.
Read
more
less
