Artesyn Astec AC/DC промышленный корпус 250 Вт LPQ253 импульсный источник

The LPQ250 series of open-frame AC-DC power supplies comprises three quad output models, one offering 5 V, 12 V -12 V and ±5-25 V outputs, the other offering 5 V, 15 V -15 V and ±5-25 V outputs Each model accepts a universal input of 85—264 Vac or 120—300 Vdc.  These compact switch-mode power supplies feature output overvoltage and short-circuit protection, as well as remote sense. They provide  250 watts with 30 CFM of forced air. -CF suffix added to the model number indicates cover with top fan. -CEF suffix added to the model number indicates cover with dual end
mounted fan cover and AC inlet.  LPQ250 power supplies are designed for industry, test and measurement, single-board computers, telecommunications and networking applications.

ShenZhen PengShengYuan Electroncis Co.,Ltd is a professional agency company,located in ShenZhen of China.
It was established in 2009 and fully sold America power supply brand of Emerson Astec and Artesyn from 2010 and SL Power, Ultravolt & Excelsys of Avanced Energy from 2020,now we start to sell China power supply brand of Wuhan Yongli Rayco and Guangzhou Mornsun.
In order to meet customer urgent demand,we termly prepare most stock of major products in our warehouse which distributes in ShenZhen and HongKong of China, Malaysia and Singapore.
Warmly welcome to contact us and build good business relationship,we will offer you the best forever and finally realize Win-Win

1.Some Note about choosing a Power Supply 

1. In order to increase the life time of the switching power supply, we recommend users to choose a model which has rated output 25% more than actual need. For example, if a system required a power supply for 200W, we recommend the users to choose a power supply that has 250W rated power. This is to increase the life time and reliability of power supply.


2. Please make sure the power source is 115V or 230V, if your system sell to all over the world, we recommend users choose some type with universal input(115~230V) or 115V/230V Auto sensing. It will fit all over the world.


3. To estimate the working temperature of Power Supply, and extra forced cooling equipments. When a power supply works at higher temperature environmental, it needs to lower the output power requirement. About the curve changes between the temperature ambience & rated output power load, please refer to the product specification.


4. Read the specification of your power supply to understand all functions and the size that fit your requirement.


5. According to your applying conditions may choose the protection function you required:
   
   
   
   1. Protection function: over voltage protection(OVP),over load protection (OLP),over current protection(OCP),over temperature protection(OTP) , etc…
   
   
   2. Application function : signal function(POWER GOOD , POWER FAIL),remote control On/Off function,remote sense function,output in parallel function , etc…
   
   
   3. Special function: power factor correction (PFC)
   
   
   
   


6. Make sure that the model qualifies for the safety standards and EMC regulations you need.

2.Why did the power supply shut down during operation and after turning it off,I can restart the power supply again?

There are two possible reasons that will cause the power supply to shutdown. The first one is over load that trigger the activation of the over-load-protection (OLP). To solve this problem, we recommend choosing other type of power supply with higher output power or using some type of power supply with peak load over protection. The second one is the activation of over-temperature protection (OTP) when the internal temperature rises too high. Please check the cooling of the power supply is well. The two conditions describe will let the power supply enter protection mode and shut down. After these conditions are removed, the power supply will be back to normal.

3.Is any different between Information(EN60950-1) and Medical(EN60601-1)Safety standard?

According to the Safety standard, the leakage current in EN60950-1 Class I cannot exceed 3.5mA; in EN60601-1 the leakage current cannot exceed 300μA. The safe distance and numbers of fuse are also different when measuring.

The difference detail is below: