title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies Open Frame/ Enclosed TypeInstruction Manual1 Function1.1 Input voltage range!The range is from AC85V to AC264V or DC120V to DC370V(please see SPECIFICATIONS for details).!In cases that conform with safety standard, input voltage range isAC100-AC240V (50/60Hz).!If input value doesn’t fall within above range, a unit may not operate inaccordance with specifications and/or start output voltage hunting or fail.If you need to apply a square waveform input voltage, which iscommonly used in UPS and inverters, please contact us.!When the input voltage changes suddenly, the output voltage accuracymight exceed the specifi cation. Please contact us.? LFA10F, LFA15F, LFA30F!A power factor improvement circuit (active fi lter) is not built-in. Ifyou use multiple units for a single system, standards for input harmoniccurrent may not be satisfied. Please contact us for details.? LFA10F, LFA15F, LFA30F, LFA50F, LFA75F,LFA100F, LFA150F, LFA240F, LFA300F!Operation stop voltage is set at a lower value than that of a standardversion (derating is needed).-Use ConditionsOutput () 3.3VLFA10F5W(3W)LFA15F7.5W(5W)LFA30F10W(7.5W)LFA50F15W(10W)LFA75F25W(15W)LFA100F30W(20W)LFA150F50W(30W)LFA240F80WLFA300F100W (75W)Input AC50V or DC70VDuty 1s/30s* Please avoid using continuously for more than 1 secondunder above conditions. Doing so may cause a failure.1.2 Inrush current limiting!An inrush current limiting circuit is built-in.!If you need to use a switch on the input side, please select onethat can withstand an input inrush current.? LFA240F, LFA300F!Thyristor technique is used in the inrush current limiting circuit.When you turn power ON/OFF repeatedly within a short period oftime, please have enough intervals so that the inrush current limitingcircuit becomes operative.!When the switch of the input is turned on, the primary inrush currentand secondary inrush current will be generated because thethyristor technique is used for the inrush current limiting circuit.1.3 Overcurrent protection!An overcurrent protection circuit is built-in and activated over105% of the rated current or 101% of the peak current. A unit automaticallyrecovers when a fault condition is removed.Please do not use a unit in short circuit and/or under an overcurrentcondition.!Hiccup Operation ModeHiccup operation for overcurrent protection is included in a part ofseries. When the overcurrent protection circuit is activated and theoutput voltage drops to a certain extent, the output becomes hiccupso that the average current will also decrease.1.4 Overvoltage protection!An overvoltage protection circuit is built-in. If the overvoltage protectioncircuit is activated, shut down the input voltage, wait morethan 3 minutes and turn on the AC input again to recover the outputvoltage. Recovery time varies depending on such factors asinput voltage value at the time of the operation.!In option -R2, overvoltage protection is removed by toggling ON/OFF signal of remote control.Remarks :Please avoid applying a voltage exceeding the rated voltage to anoutput terminal. Doing so may cause a power supply to malfunctionor fail. If you cannot avoid doing so, for example, if you needto operate a motor, etc., please install an external diode on theoutput terminal to protect the unit.1.5 Output voltage adjustment range!Adjustment of output voltage is possible by using potentiometer.Please refer to instruction manual 6.1.!Option”-Y”is recommended which can adjust the output voltage.? LFA10F!Resistance for line fi lter is used for inrush current limiting.? LFA15F, LFA30F, LFA50F, LFA75F, LFA100F,LFA150F!Thermistor is used in the inrush current limiting circuit. When youturn the power ON/OFF repeatedly within a short period of time,please have enough intervals so that a power supply cools downbefore being turned on.LFA-25