Name: MEAN WELL PLN-20 series: Single-output LED power supply - PLN-20-18
Brand: MEAN WELL
SKU: PLN-20-18
Price: 43.86 USD
Availability: InStock

MEAN WELL PLN-20 series: Single-output LED power supply - PLN-20-18

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Description

PLN-20-18 — Single-output LED power supply

MEAN WELL PLN-20-18 is a single-output power supply with an 18 V DC output, 1.1 A rated current and 19.8 W stated output power. It accepts 90–277 VAC or 127–392 VDC and uses active PFC, an IP64 fully isolated plastic case and free-air convection cooling.

Download MEAN WELL PLN-20 Datasheet (PDF)
Download MEAN WELL LED Installation Manual (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

PLN-20: PDF pages 1–3.

Output specifications and adjustment

Nominal output voltage	18 V DC.
Constant-current operating region	13.5–18 V DC.
Rated output current	1.1 A.
Rated output power	19.8 W.
Output current range	0–1.1 A.
Output current adjustment	75–100%; built-in constant-current limiting circuit with an adjustable OCP level. The mechanical drawing identifies the external Io ADJ. location.
Ripple and noise	3.0 Vp-p maximum. Measured with 20 MHz bandwidth and a 12-inch twisted-pair lead terminated with 0.1 µF and 47 µF capacitors in parallel.
Voltage tolerance	±10%; includes setup tolerance, line regulation and load regulation.
Line regulation	±3.0%.
Load regulation	±10%.
Setup and rise time	Setup: 500 ms at 230 VAC; 2000 ms at 115 VAC, at full load.

Input and efficiency

Input voltage	90–277 VAC or 127–392 VDC. Apply the low-input-voltage load curve.
Input frequency	47–63 Hz.
Power factor	Built-in active PFC. PF ≥0.95 at 115 VAC; PF >0.9 at 230 VAC and 277 VAC, at full load.
Total harmonic distortion	THD <20% when output loading is ≥75% at 115 VAC or 230 VAC and ≥75% at 277 VAC.
Efficiency	81% typical for this model.
Series performance reference	The PLN-20 series is described as reaching up to 83.5% efficiency. This series value does not replace this model’s typical efficiency. PDF page 3 shows efficiency-versus-load curves for the 48 V model at 115, 230 and 277 VAC, and power-factor curves in constant-current mode.
AC input current	0.4 A at 115 VAC; 0.2 A at 230 VAC; 0.15 A at 277 VAC.
Inrush current	35 A typical cold start at 230 VAC; pulse width 40 µs measured at 50% of peak current.
Leakage current	0.5 mA at 240 VAC.
Partial-load power factor	Use the input-voltage-specific curves on PDF page 3 when checking partial-load PF. Do not apply the page’s general PF >0.9 at ≥75% load statement as a guarantee for every input voltage.

LED load and application conditions

Load application	LED lighting and moving-sign applications. Suitable for dry or damp locations, subject to the installation guidance.
LED drive method	Use the constant-current region for direct LED drive. Direct connection to LEDs is suggested; this supply is not suitable for use with additional drivers.
LED-system compatibility	The highest output voltage within the constant-current region depends on the configuration of the end system. Contact MEAN WELL if compatibility issues arise.
Switched-mains installation	To meet the stated ErP lighting-fixture requirements, use this supply behind a switch; do not leave it permanently connected to the mains.

Protection and environment

Overcurrent protection	95–110% as stated in the protection table. Constant-current limiting; automatic recovery after the fault condition is removed.
Short-circuit protection	Hiccup mode; automatic recovery after the fault condition is removed.
Overvoltage protection	19–22 V. Output shuts off and is clamped by a zener diode.
Overtemperature protection	Output shuts down; automatic recovery after the temperature falls.
Cooling	Free-air convection.
Working temperature	−30 to +60°C, with the specified load derating.
Ambient-temperature load curve	Horizontal mounting: 100% load from −30 to +50°C, reducing along the curve to 60% at +60°C.
Input-voltage load curve	At 60 Hz, the static-characteristic curve shows 80% load at 90 VAC and 100% load from 100 to 277 VAC. Apply temperature and input-voltage limits together.
High-altitude derating	For this fanless supply, reduce the allowable ambient temperature by 3.5°C per 1000 m above 2000 m altitude.
Working humidity	20–90% RH, non-condensing.
Storage conditions	−40 to +80°C; 10–95% RH.
Temperature coefficient	±0.06%/°C over 0–50°C.
Vibration	10–500 Hz, 2 G, 10 minutes per cycle, for 60 minutes along each of the X, Y and Z axes.

Safety, EMC and reliability

Power-unit classification	SELV; Class II power unit with no FG connection.
Safety standards and model scope	IEC61347-1 and IEC61347-2-13; TUV BS EN/EN61347-1 and -2-13; UL8750; CSA C22.2 No. 250.0-08; EAC TP TC 004; GB19510.1 and GB19510.14; IP64 approved, as listed in the datasheet.
Optional CCC configuration	The CCC marking is identified as optional. Confirm the required supplied certification configuration with the manufacturer.
Withstand voltage	Input to output: 3.75 kVAC.
Isolation resistance	Input to output: 100 MΩ at 500 VDC, 25°C and 70% RH.
EMC emission	BS EN/EN55015; BS EN/EN61000-3-2 Class C at ≥75% load; BS EN/EN61000-3-3; GB/T17743 and GB17625.1; EAC TP TC 020.
EMC immunity	BS EN/EN61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN61547; light-industry level; EAC TP TC 020.
Quality and reliability design	100% full-load burn-in testing; high-reliability design. The manufacturer also describes the compact PLN-20 series as a low-cost design.
MTBF	Minimum 5217.1 thousand hours by Telcordia SR-332 (Bellcore); minimum 621.4 thousand hours by MIL-HDBK-217F at 25°C.
Manufacturer warranty	2 years.

Construction, wiring and dimensions

Construction	Fully isolated plastic case with IP64 design. Compact construction; Class II, no FG.
Dimensions	148.5 × 38.5 × 28 mm (L × W × H). Case No. 989B; drawing units are millimetres with general tolerance ±1 mm.
Mounting drawing	Two open mounting features marked R2.0 mm, with 3.2 mm horizontal edge offsets and 10 mm vertical edge offsets. The Io ADJ. location is dimensioned 18.83 mm from the right-hand end and 10.75 mm from the lower edge.
Case-temperature measurement point	The marked Tcase point is 74.25 mm from the right-hand end and 19.25 mm from the upper edge in the plan view. These numbers locate the measurement point; they are not a numeric case-temperature rating.
AC input cable	UL1015 18 AWG × 2 cores, 320 ±10 mm long. Brown = AC/L; blue = AC/N. No FG conductor.
DC output cable	UL1015 18 AWG × 2 cores, 320 ±10 mm long. Red = +V; black = −V.
Adjustment access	The top-view drawing marks Io ADJ. for output-current adjustment; no SVR1 voltage-adjustment function is specified for this series.
Packing and weight	180 g, catalog packing reference per unit; not a measured net-weight claim. Outer packing: 60 pieces, 12.8 kg, 0.9 CUFT.
General test conditions	Unless otherwise specified, parameters are measured at 230 VAC input, rated load and 25°C ambient temperature.

Installation and system guidance

Installation isolation and service	Disconnect the supply from the mains before installation or maintenance and prevent unintended reconnection. Have faults examined by a qualified technician; do not open the case yourself. Any adjustment requiring case removal must be performed by qualified personnel with mains disconnected, following the model drawing and safe reassembly requirements. Dispose of the LED supply together with the lighting equipment at end of life.
Ventilation and mechanical support	Keep ventilation clear and do not stack objects on the unit. Maintain 10–15 cm clearance when an adjacent device is a heat source. Follow this model’s mounting orientation and derating diagrams. Check the mounting surface and luminaire structural strength; use safety cables for bay lighting applications. For IP64 units, use indoors or outdoors only where sheltered from rain. Do not immerse the unit in water.
Wiring and system enclosure	Use approved input and output wiring with current ratings at least equal to the applicable unit current. Follow this model’s terminal assignments. This Class II ungrounded supply has no FG connection. Provide insulation around system interconnections and enclose single-insulated wiring. Keep output current and power within the model ratings and temperature limits. Have damaged external flexible cables replaced by the manufacturer, its service agent or similarly qualified personnel.
Circuit-breaker reference	At 230 V AC, the installation manual gives calculated maximum quantities for PLN-20 with ABB S200-series breakers: B10 61, B16 98, C10 61, C16 98, D10 61 and D16 98. B, C and D identify breaker trip curves; 10 and 16 identify ampere ratings. These counts apply to that stated breaker and voltage reference.
EMC integration	Reverify EMC in the finished equipment with the connected load and actual wiring and assembly. The linked guidance describes representative component-power-supply tests; its illustrated distances are test arrangements, not installation clearances.