title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

GHAMADE IN JAPANAC-DC Power Supplies Medical Type GHA300F, GHA500F Instruction Manual-Mounting surface will be very hot during the operation ,so pleasebe careful not to touch the surface.-GHA500F series can achieve the efficient heat dissipation bycombining Conduction cooling and Forced air cooling. However, ifthe cooling fan stops due to the fan failure or other reason, OverTemperature Protection may not be activated due to the conductioncooling, and then the components temperature which are cooled byforced air (1, 2, 3 and 4 shown in table 3.1) would become high.Please ensure fail safe function of your product, and consult us formore details.? GHA300F/500F!Given the potential for variation between one application and another,the real test is to measure the critical components temperaturerise when the power supply installed in the end-application.For reliable and safe operation, please make sure the maximumcomponent temperatures rise given in table 3.1 is not exceeded.Operating at the maximum temperature rating results in 3-Years lifeexpectancy. The actual life expectancy can be extended by reducingthe ambient temperature. Please refer to section 4 for moreinformation.!Test Measuring pointsBe aware of the conductive parts during the measurements.Please contact us for more detail.1 2 3 45 8 6 7Load factor [%]100(Pomax:360W)75(A) - (F) mounting50250-20-1001020304050607080Aluminum base plate temperature [C]Fig.3.3 Conduction cooling derating curve (Reference value)? GHA500FLoad factor [%]1007550(C),(D),(E) mounting(A) mounting(B) mounting(Pomax:150W)25(F) mounting0-20-10010203040506070Ambient temperature [C]Fig.3.4 Convection cooling derating curve (Reference value)? GHA300F100Point(a)Upper substrate(b)Lower substrateFig.3.2 Temperature measurement points locationsTable 3.1 Maximum operating temperatureParts nameSymbolNo.Maximumtemperature[C]500F 300FRemarks1Line FilterL1011151152VaristorSK10176763Input CapacitorC10689894Output CapacitorC50687875RectifierSS11120120case temperature6TransformerT111101107Output ChokeL511151158Aluminum base plate-*-*Operating ambient temperature derating of Conduction cooling(Fig.3.3)Load factor [%]75(B),(C) mounting(D),(E) mounting50(Pomax:100W)25(A) mounting0-20-10010203040506070Ambient temperature [C]Fig.3.5 Convection cooling derating curve (Reference value)GHA-19