Hitachi UTOPIA RAS-4 Series - Overall Sound Level

5 Acoustic characteristic curves
Overall sound level
TCGB0136 rev.1 - 05/2021
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5.1 Overall sound level
The overall sound level has been measured in an anechoic chamber so reected sound should be taken into
consideration when installing the unit.
Test Conditions:
1 Distance of the unit from the measuring point: 1 meter from the unit’s front surface; 1.5 meter from oor level:
Overall sound level measuring position
2 Power supply:
a. Single phase units: 1~ 230V 50Hz.
b. Three phase units: 3N~ 400V 50Hz.
? NOTE
The sound data is measured in an anechoic chamber, so reected sound should be taken into consideration when installing the unit.