MEAN WELL NPF-120D-42
MEAN WELL NPF-120D-42 is an AC/DC constant current dimmable LED driver for LED lighting. Its rated output is 2.9 A with a 25.2-42 V operating region and 121.8 W catalog rated power. Match the LED string voltage to the constant-current region; the model voltage is the upper rated output-voltage limit.
Download MEAN WELL NPF-120D Datasheet (PDF)
Combined catalog: PDF pages 46-52; specifications on page 47, wiring and dimensions on page 52.
Output and model selection
Parameter
Details
Full model
NPF-120D-42
Model code
NPF identifies the driver family; 120 identifies the nominal series power class; 42 identifies the rated output voltage. Use the actual 121.8 W rating for this model. D identifies 3-in-1 current dimming.
Output mode
Constant current (CC), with 3-in-1 current dimming
Rated output
42 V; 2.9 A; 121.8 W
Constant-current region
25.2-42 V
Output performance
Parameter
Details
Current tolerance
±5.0%
Current ripple
5.0% maximum at rated current
LED driving method
Direct connection to compatible LEDs is recommended. This constant-current dimming driver is not suitable for use with additional LED drivers. The highest voltage in the CC region depends on the final system configuration; verify load compatibility.
Typical efficiency
89.5%
Startup
500 ms setup at 115 VAC / 230 VAC; measured at first cold start. Repeated switching can increase setup time.
Input and mains loading
Parameter
Details
Input range
90-305 VAC / 127-431 VDC; 47-63 Hz
Power factor
Built-in active PFC; typical full-load PF ≥0.97 at 115 VAC; ≥0.96 at 230 VAC; ≥0.94 at 277 VAC
Total harmonic distortion
THD <20% at load ≥60% with 115/230 VAC, or load ≥75% with 277 VAC
Input current (typical)
1.3 A at 115 VAC; 0.65 A at 230 VAC; 0.55 A at 277 VAC
Cold-start inrush (typical)
60 A at 230 VAC; 520 µs width measured at 50% peak current, per NEMA 410
Maximum units on a 16 A breaker
4 on Type B / 6 on Type C at 230 VAC
Leakage current
<0.25 mA at 277 VAC
Standby consumption
<0.5 W
Input/load derating
At 60 Hz: 80% load at 90 VAC, rising to 100% at 100 VAC; full-load region through 305 VAC, subject to temperature limits.
Dimming interface
Parameter
Details
Control connection
Apply one control method between purple DIM+ and pink DIM−. Do not connect DIM− to black Vo−.
Accepted controls
0-10 VDC, or 10 V PWM at 100 Hz-3 kHz, or resistance
Dimming source current
100 µA typical from each driver
Controlled output
Output constant-current level
Minimum level and off command
Minimum dimming level is about 6% of rated output current; output current between 0% and 6% is undefined. Current can fall to 0% with about 0 kΩ, 0 VDC, or a 10 V PWM signal at 0% duty.
Full-output reference
10 VDC, 100% duty 10 V PWM, or 100 kΩ/N resistance, where N is the number of drivers in synchronized dimming. Select a controller for the combined source current and follow the complete control curve.
Control isolation
The NPF dimming circuit is not isolated from the secondary output. Maintain the insulation and isolation required by the complete system.
Protection and operating environment
Parameter
Details
Overcurrent
95-108% of rated current; constant-current limiting; automatic recovery after the fault is removed.
Short circuit
Hiccup mode; automatic recovery after the fault is removed.
Overvoltage
46-54 V; output shuts down; re-power to recover.
Overtemperature
Output shuts down; re-power to recover.
Working case temperature
Tcase -40 to +90°C; maximum case temperature +90°C. These are case limits, not full-load ambient ratings.
Cooling and ambient derating
Free-air convection with the recommended horizontal mounting. The following ambient and case-temperature limits apply to horizontal installation as shown in the mechanical drawing. For this output-voltage branch, ambient Ta curve: 100% load through +45°C, then derate to 50% at +70°C. The -40 to -25°C region is specified only for 230 VAC input. Meet both the ambient-load curve and the maximum case temperature.
Operating humidity
20-95% RH, non-condensing
Storage
-40 to +80°C; 10-95% RH
Temperature coefficient
±0.03%/°C over 0 to +40°C
Altitude derating
For this fanless design above 2000 m, reduce allowable ambient temperature by 3.5°C per additional 1000 m.
Vibration
10-500 Hz, 5 G, 12 minutes per cycle; 72 minutes along each X, Y and Z axis
Dimensions, wiring and installation
Parameter
Details
Body dimensions
191 x 63 x 37.5 mm (L x W x H)
Mounting
Two Ø4.5 mm mounting holes; case PWM-120. Use the manufacturer drawing for hole positions and clearance.
AC and output wire colors
Brown AC/L; blue AC/N; red Vo+; black Vo−. Class II construction has no FG lead. For DC input, confirm the model-specific input polarity with the manufacturer before wiring.
Input cable
SJTW 18 AWG x 2 conductors, 300 ±20 mm
Output cable
SJTW 14 AWG x 2 conductors, 300 ±20 mm
Control cable
UL 2464 18 AWG x 2 control conductors, 300 ±20 mm
Case-temperature measurement
Measure at the tc point marked in the mechanical drawing; do not substitute ambient temperature.
Ingress protection
IP67 plastic housing for dry, damp or wet locations, including suitable indoor/outdoor installations. Do not place the product in water. Protect and insulate all cable interconnections according to the installation manual.
Installation and service
Disconnect the utility supply before installation or maintenance and prevent accidental reconnection. Keep the unit ventilated and free of stacked objects; leave 10-15 cm from an adjacent heat source. Derate for nonstandard mounting orientation or excessive ambient temperature. Use approved cables with current ratings at least equal to the unit rating; check all connections. Keep single-insulated wires covered by the final system enclosure. Do not open the case; damaged external cables must be replaced by the manufacturer, service agent or similarly qualified personnel.
Reference mass
970 g per unit, from the catalog PACKING value of 0.97 kg. Catalog packing reference per unit; not a measured net weight or total shipping-package weight.
Safety and system integration
Parameter
Details
Design and output class
Class II plastic enclosure; SELV output.
Listed safety standards
UL 8750 Type HL; CSA C22.2 No. 250.13-12; ENEC BS EN/EN 61347-1, BS EN/EN 61347-2-13 (independent), BS EN/EN 62384; EAC TP TC 004; GB/T 19510.1 and GB/T 19510.213; IP67 approval.
Design reference
BS EN/EN 60335-1 is a design reference, distinct from the listed approvals.
Input-output isolation
3.75 kVAC withstand; insulation resistance 100 MΩ at 500 VDC, 25°C and 70% RH
EMC emissions
BS EN/EN 55015; BS EN/EN 61000-3-2 Class C at load ≥60%; BS EN/EN 61000-3-3; GB/T 17743; GB 17625.1; EAC TP TC 020
EMC immunity
BS EN/EN 61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN 61547 light-industry level, including 2 kV line-to-line surge; EAC TP TC 020
Final equipment
The driver is a component. The final equipment manufacturer must re-qualify EMC for the complete installation; component approvals do not automatically certify the finished luminaire.
Type HL application
The catalog lists Type HL use in Class I, Division 2 hazardous (classified) locations; the finished installation must satisfy the applicable luminaire and location requirements.
Manufacturer lighting-installation condition
For the lighting-fixture ErP condition stated in the datasheet, install behind a switch, without a permanent connection to the mains.
Reliability and reference conditions
Parameter
Details
Typical lifetime
More than 50,000 hours when the case tc point (or TMP) is about +75°C or lower, subject to the operating and installation limits.
Catalog MTBF
2632.6 thousand hours minimum, Telcordia SR-332; 233.9 thousand hours minimum, MIL-HDBK-217F at 25°C. MTBF is distinct from service lifetime.
Manufacturer warranty
The catalog states 5 years; subject to MEAN WELL warranty terms.
Measurement basis
Unless otherwise specified, parameters are measured at 230 VAC input, rated current and +25°C ambient. Typical efficiency, PF and transient figures depend on operating conditions. Use the model-specific derating and control curves.
Download MEAN WELL LED Power Supply Installation Manual (PDF)
Read
more
less
