title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

AC-DC Power Supplies Open FrameInstruction Manual1 Function1.1 Input voltage range!The range is from 85VAC to 264VAC.In cases that conform with safety standard, input voltage range is100VAC to 240VAC (50/60Hz).When using with DC input, please use our optional product“-DC”or attach a DC fuse externally to protect against power failure.Please contact us.!If input value doesn’t fall within above range, a unit may not operatein accordance with specifi cations and/or start 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.If the restart time of the short interruption power failure is less than3 seconds, perform a thorough evaluation.!A unit can operate under the input voltage dip with derating.Table 1.1 shows the load factors that can be output.ModelLHP150FLHP300F1.2 Inrush current limitingTable 1.1 Load factorInput Voltage100VAC→50VAC 200VAC→100VACNo available 100%!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.!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.1.3 Overcurrent protection!An overcurrent protection circuit is built-in and activated over101% of the peak current. A unit automatically recovers when afault condition is removed.Please do not use a unit in short circuit and/or under an overcurrentcondition.!Hiccup Operation ModeWhen the output voltage drops at overcurrent, the average outputcurrent is reduced by hiccup operation of power supply.Please contact us for details.1.4 Peak current protection! The unit has the peak current protection. When the peak currentprotection activates, the output stops. After a few seconds, theoutput will recover automatically. However,it will stop again if theovercurrent condition was not resolved.* The recovery time depends on the input voltage and the load condition.1.5 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 -RO, 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.1.6 Output voltage adjustment range!To increase an output voltage, turn a built-in potentiometer clockwise.To decrease the output voltage, turn it counterclockwise.1.7 Output ripple and ripple noise!Output ripple noise may be infl uenced by measurement environment,measuring method fi g.1.1 is recommended.Osilloscope/Ripple noise meterBw:20MHz+Vout-VoutC1C2150mmC1 : Ceramic capacitor 0.1μFC2 : Aluminum electrolytic capacitor 22μF+LoadDifferential probeFig.1.1 Measuring method of Ripple and Ripple NoiseRemarks :When GND cable of probe with fl ux of magnetic force from powersupply are crossing, ripple and ripple noise might not measurecorrectly.Please note the measuring environment.LHP-9