Delta Electronics Series H48SA manual Thermal Curves

THERMAL CURVES

H48SA12025(Standard)	Output Current vs. Ambient Temperature and Air Velocity
Output Current (A)	@Vin = 48V (Either Orientation)

25											600LFM
											500LFM
20
		Natural
		Convection
15
			100LFM
10				200LFM
					300LFM
5
						400LFM
0
25	30	35	40	45	50	55	60	65	70	75	80	85
									(℃)	Ambient Temperature

Figure 24: Temperature measurement location for openframe version - The allowed maximum hot spot temperature is defined at 122℃.

Figure 26: Output current vs. ambient temperature and air velocity @ Vin=48V, Vout=12V(Openframe Version, Either Orientation).

H48SA12025(standard) Output Current vs. Ambient Temperature and Air Velocity

Output Current (A) @Vin = 48V (Either Orientation,With Heatspreader)

25
20
	Natural
	Convection
15
		100LFM
			200LFM
10				300LFM
					400LFM
5					500LFM
						600LFM
0
25	30	35	40	45	50	55	60	65	70	75	80	85
									(℃)	Ambient Temperature

Figure 25: Temperature measurement location for heatspreader version - The allowed maximum hot spot temperature is defined at 109℃.

Figure 27: Output current vs. ambient temperature and air velocity @ Vin=48V, Vout=12V(Heatspreader version, Either Orientation).

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DS_H48SA12025_05052008