title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

DC-DC Converters Bus Converter . Power Module TypeInstruction Manual(3) Output voltage increasing!By connecting the external resistor (RU), output voltage becomesadjustable to increase.The external resistor (RU) is calculated the following equation.4 Series and ParallelOperationRU=VORX（100％+％）1.225X％（100％+2X％）％〔kW〕4.1 Series operationCQHS(4) Intput voltage derating!When the input voltage is 36 - 40VDC , the output voltage adjustmentrange becomes as shown in Fig. 3.7.ADJUSTMENT RANGE [%]％= VOU-VORVOR110100908500+VOUT+STRM-S-VOUT32, 50503236 38 40 42INPUT VOLTAGE [V]ADJUSTMENT RANGE [%]110100908400Fig. 3.7 Output voltage adjustment range32, 50503236 38 40 42INPUT VOLTAGE [V]CQHS25048(5) Output current derating (CQHS3504832)!When the output voltage adjust less than rated output voltage, theoutput current range becomes increasing as shown in Fig. 3.8.Output current [A]12.011.511.010.510.0X100RUVOR :Rated output voltage[V]VOU :Output voltage needed to set up[V]Fig. 3.6 Connection for output voltage increasing0026.88 28.032.035.2Output voltage [V]Fig. 3.8 Output Current derating curve (CQHS3504832)!Series operation is available by connecting the outputs of two ormore power supplies, as shown below. Output current in seriesconnection should be lower than the lowest rated current in eachunit.(a)Power +Supply -(b)4.2 Redundancy operation!Parallel operation is not possible.!Redundancy operation is available by wiring as shown below.!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.Fig. 4.1 Examples of series operation+S+VOUT-VOUT-S+S+VOUT-VOUT-SFig. 4.2 Example of Redundancy OperationI3Power +Supply -Power +Supply -Power +Supply -II1 I32LoadLoadLoadthe rated current valueLoad3.7 Withstanding Voltage / Isolation Voltage!When testing the withstanding voltage, make sure the voltage isincreased gradually. When turning off, reduce the voltage graduallyby using the dial of the hi-pot tester. Do not use a voltage testerwith a timer as it may generate voltage several times as large asthe applied voltage.CQHS-17