MEAN WELL LRS-450 Series 450W Single Output Switching Power Supply

Key Features

MEAN WELL patent pending (Application number CN202220241473.0, CN202230060511.8)
AC input range selectable by switch
Withstands 300VAC surge input for 5 seconds
Protections: Short circuit / Overload / Over voltage / Over temperature
Forced air cooling with built-in fan ON-OFF control
1U low profile design
Withstands 5G vibration test
High operating temperature up to 70°C
Operating altitude up to 5000 meters (Note.10)
3 years warranty
MTBF > 1KK hrs

Description

The LRS-450 series is a 450W single-output enclosed type power supply featuring a 35mm low profile design. It accepts AC input of 115 VAC or 230 VAC (selectable by switch) and offers output voltages of 5V, 12V, 15V, 24V, 36V, and 48V. With high efficiency up to 92% and a built-in long-life fan, the LRS-450 operates at full load in temperatures ranging from -20°C to +70°C. It includes complete protection functions and 5G anti-vibration capability, complying with international safety regulations. The LRS-450 series provides a high price-to-performance power supply solution for various industrial applications.

Model Encoding

The model number is structured as LRS-450-X, where 'X' denotes the output voltage. For example, LRS-450-5 indicates a 5V output.

Specifications

MODEL	LRS-450-5	LRS-450-12	LRS-450-15	LRS-450-24	LRS-450-36	LRS-450-48
OUTPUT DC VOLTAGE	5V	12V	15V	24V	36V	48V
RATED CURRENT	75A	37.5A	30A	18.8A	12.5A	9.4A
CURRENT RANGE	0 ~ 75A	0 ~ 37.5A	0 ~ 30A	0 ~ 18.8A	0 ~ 12.5A	0 ~ 9.4A
RATED POWER	375W	450W	450W	451.2W	450W	451.2W
RIPPLE & NOISE (max.) Note.2	200mVp-p	200mVp-p	200mVp-p	240mVp-p	360mVp-p	360mVp-p
VOLTAGE ADJ. RANGE Note.3	4.75 ~ 5.5V	11.4 ~ 13.2V	14.25 ~ 16.5V	22.8 ~ 26.4V	34.2 ~ 39.6V	45.6 ~ 52.8V
VOLTAGE TOLERANCE Note.4	±2.0%	±1.5%	±1.0%	±1.0%	±1.0%	±1.0%
LINE REGULATION Note.5	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
LOAD REGULATION Note.6	±2.0%	±1.0%	±0.5%	±0.5%	±0.5%	±0.5%
SETUP, RISE TIME Note.7	1500ms, 50ms/230VAC; 1500ms, 50ms/115VAC at full load
HOLD UP TIME (Typ.)	16ms/230VAC; 12ms/115VAC at full load
INPUT VOLTAGE RANGE Note.8	90 ~ 132VAC / 180 ~ 264VAC (selectable by switch); 255 ~ 370VDC (switch on 230VAC)
FREQUENCY RANGE	47 ~ 63 Hz
EFFICIENCY (Typ.)	87%	90%	90%	91%	92%	92%
AC CURRENT (Typ.)	10A/115VAC; 6A/230VAC
INRUSH CURRENT (Typ.)	35A/115VAC; 60A/230VAC
LEAKAGE CURRENT	<2 mA / 240 VAC
PROTECTION (Note.9) OVER LOAD	105 ~ 150% rated output power; Constant current limiting, unit will shutdown after 3 sec. re-power on to recover
OVER VOLTAGE	5.75 ~ 6.75V	13.8 ~ 16.2V	18 ~ 21V	27.6 ~ 32.4V	41.4 ~ 48.6V	55.2 ~ 64.8V
Protection type	Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE	Shut down o/p voltage, re-power on to recover
FUNCTION FAN ON/OFF CONTROL (Typ.)	RTH3 ≥ 50°C FAN ON, ≤ 40°C FAN OFF
ENVIRONMENT WORKING TEMP.	-20 ~ +70°C (Refer to "Derating Curve")
WORKING HUMIDITY	20 ~ 90% RH non-condensing
STORAGE TEMP, HUMIDITY	-40 ~ +85°C, 10 ~ 95% RH
TEMP. COEFFICIENT	±0.03% / °C (0 ~ 50°C)
VIBRATION	10 ~ 500 Hz, 5G, 10 min./1 cycle, 60 min. each along X, Y, Z axes
SAFETY STANDARDS	BS IEC/UL 62368-1, EAC TP TC 004, AS/NZS 62368.1 approved, BIS IS13252(Part1):2010/IEC60950-1:2005 (except for 48V)(pending), BSMI CNS15598-1(pending)
WITHSTAND VOLTAGE	I/P-O/P: 3KVAC; I/P-FG: 2KVAC; O/P-FG: 0.5KVAC
ISOLATION RESISTANCE	I/P-O/P, I/P-FG, O/P-FG: 100M Ohms / 500VDC / 25°C / 70% RH
EMC EMISSION	Compliance to EAC TP TC 020, BSMI CNS15936(pending)
EMC IMMUNITY	Compliance to EAC TP TC 020
OTHERS MTBF	1508.9K hrs min. Telcordia SR-332(Bellcore); 252.2K hrs min. MIL-HDBK-217F (25°C)
DIMENSION	22512435 mm (LWH)
PACKING	0.85 Kg / 15 pcs / 14.11 Kg / 0.85 CUFT

Notes

All parameters not specially mentioned are measured at 230VAC input, rated load, and 25°C ambient temperature.
Ripple & noise are measured at 20 MHz bandwidth using a 12" twisted pair-wire terminated with a 0.1uF & 47uF parallel capacitor.
Voltage adjustment is only operational within the input range of 100-120VAC or 200-240VAC. Adjusting voltage outside this range may cause abnormal output.
Tolerance includes set up tolerance, line regulation, and load regulation.
Line regulation is measured from low line to high line at rated load.
Load regulation is measured from 0% to 100% rated load.
Setup time is measured at cold start. Frequent power cycling may increase setup time.
Derating may be needed under low input voltages. Refer to "Static Characteristics" for details.
Once protections are triggered, a 3-minute (Typ.) cooldown period is required before restart.
Ambient temperature derating of 5°C/1000m is needed for operating altitudes above 2000m (6500ft).
This power supply does not meet the harmonic current requirements outlined by EN61000-3-2. It should not be used under the following conditions: a) end-devices used within the European Union, b) end-devices connected to public mains supply with 220Vac or greater rated nominal voltage, and c) the power supply is installed in end-devices with average or continuous input power greater than 75W, or belongs to a lighting system. Exceptions apply for professional equipment with total rated input power > 1000W and symmetrically controlled heating elements with rated power ≤ 200W.

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Block Diagram

The block diagram illustrates the internal components and signal flow of the LRS-450 series power supply, including EMI filter, rectifiers, power switching, PWM control, and output stages with protections.

Derating Curve

The derating curves show the relationship between load percentage and ambient temperature, and load percentage and input voltage (60Hz). These curves indicate the operational limits to ensure reliable performance.

Mechanical Specification

The mechanical specifications provide the physical dimensions of the LRS-450 series power supply, including length, width, height, and mounting hole details. The diagram shows the unit dimensions as 225mm x 124mm x 35mm.

Terminal Pin Assignment:

Pin 1: AC/L
Pin 2: AC/N
Pin 3: FG (Frame Ground)
Pins 4-6: DC OUTPUT -V
Pins 7-9: DC OUTPUT +V

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