High quality 75W 24V SMPS Uninterruptible Switching Power Supply transformer

Short Description:

The LRS-75 series is a 75W single-output enclosed power supply featuring a 30mm low-profile design and a wide-range 85-264VAC input.
The entire series offers outputs of 5V, 12V, 15V, 24V, 36V, and 48V. With an efficiency of up to 91.5%, its metal mesh housing enhances heat dissipation, allowing the LRS-75 to operate over a temperature range of -30°C to +70°C without a fan. Ultra-low no-load power consumption (below 0.3W) enables end systems to easily meet international energy efficiency requirements. The LRS-75 series provides full protection and 5G vibration resistance, and complies with international safety standards including EN 60950-1, EN 60335-1, EN 61558-1/-2-16, and GB 4943. It offers a cost-effective solution for a variety of industrial applications.

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Technical Data

Type		Technical indicators
Output	DC voltage	5V	12V	24V	36V	48V
	Rated current	14A	6A	3.2A	2.1A	1.6A
	Rated power	70W	72W	76.8W	75.6W	76.8W
	Ripple and noise	100mVp-p	120mVp-p	150mVp-p	200mVp-p	200mVp-p
	Voltage regulation range	±10%
	Voltage precision	±2.0%	±1.0%	±1.0%	±1.0%	±1.0%
	Linear adjustment rate	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
	Load rregulation rate	±1.0%	±0.5%	±0.5%	±0.5%	±0.5%
	Star up time	500ms,30ms/230VAC 500ms,30ms/115VAC(full load)
	Keep time	60ms/230VAC 12ms/115VA(full load)
Input	Voltage range/frequency	85-264VAC/120-373VDC 47Hz-63Hz
	Efficiency(typcial)	87%	89%	90%	91.50%	92%
	Working current	1.4A/115VAC 0.85A/230VAC
	Shock current	Cold start:65A/230VAC
	Leakage current	<0.75mA 240VAC
Protection characteristics	Overload protection	Protection type: burp mode, remove the abnormal situation and automatically return to normal
Protection characteristics	Overvoltage protection	Protection type:close output and restart automatically to normal
Environmental science	Working temperature and humidity	-25ºC~+70ºC;20%~90RH
Environmental science	Storage temperature and humidity	40ºC~+85ºC; 10%~95RH
Security	Pressure resistance	Input – output :4KVAC input-case :2KVAC output -case: 1.25kvac duration :1 minute
Security	lnsulation impedance	Input – output and input – shell, output – shell: 500 VDC /100 m Ω 25ºC,70% RH
Other	Size	999730mm(LWH)
Other	Net weight / gross weight	250g/272g
Remarks	(1)Measurement of ripple and noise: Using a 12 “twisted-pair line with a capacitor of 0.1uF and 47uF in parallel at the terminal,the measurement is carried out at 20MHz bandwidth.
Remarks	(2)Efficiency is tested at the input voltage of 230VAC,rated load and 25ºC ambient temperature.Accuracy: including setting error,linear adjustment rate and load adjustmient rate.Test method of linear adjustment rate: testing from low voltage to high voltage at rated loadLoad adjustment rate test method: from 0%-100% rated load.The start-up time is measured in the cold start state, and the fast frequent switch machine may increase the startup time.When the altitude is above 2000 meters, the operating temperature should be lowered by 5/1000.

What is the efficiency of a switching power supply?

The main advantage of the switching power supply is greater efficiency (up to ~98–99%) and associated lower heat generation than linear regulators because the switching transistor dissipates little power when acting as a switch.

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