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 AC132V.!AC input voltage must have a range from AC85V to AC132V fornormal operation. If the wrong input is applied, the unit will not operateproperly and/or may be damaged.!In cases that conform with safety standard, input voltage range isAC100-AC120V(50/60Hz).1.2 Inrush current limiting!Inrush current limiting is built-in.!If a switch is being used for input, ensure that it is confi gured tohandle the input inrush current.? LGA50A, LGA75A!If the unit is shut down, recycling AC line has to be done aftercooling down the unit since thermistor is used for the protectionfrom the inrush current.? LGA100A, LGA150A, LGA240A!The SCR is used for protection from inrush current. When poweris turned ON/OFF repeatedly within a short period of time, it isnecessary to have enough time between power ON and OFF tooperate resistance circuit for inrush current.1.3 Overcurrent protection!Overcurrent protection is built-in and comes into effect over105%(-H is 101% or more of the peak current) of the rated current.Overcurrent protection prevents the unit from short circuitand overcurrent condition of less than 15 seconds. The unit automaticallyrecovers when the fault condition is cleared.? LGA50A-3R3-Y, LGA50A-5, LGA75A-3R3-Y,LGA75A-5, LGA100A-3R3-Y, LGA100A-5-Y,LGA150A-3R3-Y, LGA150A-5-Y!Hiccup current characteristics.!When the output voltage drops at overcurrent, the average outputcurrent is reduced by hiccup operation of power supply.1.4 Overvoltage protection!An overvoltage protection circuit is built-in. The AC input shouldbe shut down if overvoltage protection is in operation. The minimuminterval of AC recycling for recovery is 1.5 minutes (LGA240Ais 3minutes).*The recovery time varies depending on input voltage.Remarks:Please avoid applying the over-rated voltage to the output terminal.Power supply may operate incorrectly or fail.In case of operatinga motor etc. , please install an external diode on the outputterminal 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 voltatge.1.6 Isolation!For a receiving inspection, such as Hi-Pot test, gradually increase(decrease) the voltage for the start (shut down). Avoid using Hi-Pot tester with the timer because it may generate voltage a fewtimes higher than the applied voltage, at ON/OFF of a timer.2 Series Operation andParallel Operation!Series operation is available by connecting the outputs of two ormore power supplies with the same output voltage, as shown below.Output current in series connection should be lower than thelowest rated current in each unit.Power +Supply -Power + Power +Supply -Supply -(a)(b)Fig.2.1 Examples of connecting in series operation!Parallel operation is not possible.!Redundancy operation is available by wiring as shown below.PowerSupplyPowerSupply+-+-LoadI1I2Power +Supply -!Even a slight difference in output voltage can affect the balancebetween the values of I1 and I2.Please make sure that the value of I3 does not exceed the ratedcurrent of a power supply.I3 [ the rated current valueI3LoadFig.2.2 Example of redundancy operationLoad LoadLGA-16