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Tableau 21 - Niveau de puissance acoustique [dB] - Configuration à soufflage vers le bas, position basse, module ventilateurs EC haute
efficacité, débit d'air max.
Unit
Model
Level
model
PWL
PW50W
SPL
PWL
PW51W
SPL
PWL
PW50G
SPL
PWL
PW60W
SPL
PWL
PW60G
SPL
PWL
PW70W
SPL
PWL
PW70G
SPL
NOTE: The sound levels global and for each octave band are expressed in dB with a tolerance of ( 0/+2) dB.
PWL - Sound Power Level calculated according to ISO 3744 procedure method.
SPL - Sound Pressure Level measured in free field conditions and at 2 meters from the front of the unit and 1,5 meters above the surface
according to ISO 3744 average method.
All PCW units have very high noise emission at maximum airflow.
Relevant expected values of Sound level dB(A) for lower airflow can be found in technical literature and simulation software.
VERTIV™ | Liebert
PCW HDT | UM | 10017615MAN_FRA | 15.01.2024
®
Octave band frequency (Hz)
31,5
63
125
96.2
98.7
105.5
64.7
70.4
80.4
96.2
98.7
105.5
64.7
70.4
80.4
96.2
98.7
105.5
64.7
70.4
80.4
96.2
98.7
105.5
64.7
70.4
80.4
96.2
98.7
105.5
64.7
70.4
80.4
97.9
100.4
107.2
66.4
72.1
82.1
97.9
100.4
107.2
66.4
72.1
82.1
250
500
1000
95.1
88.9
85.3
72.7
66.6
60.9
95.1
88.9
85.3
72.7
66.6
60.9
95.1
88.9
85.3
72.7
66.6
60.9
95.1
88.9
85.3
72.7
66.6
60.9
95.1
88.9
85.3
72.7
66.6
60.9
96.8
90.6
87.0
74.4
68.3
62.6
96.8
90.6
87.0
74.4
68.3
62.6
Sound
level
2000
4000
8000
[dB(A)]
78.3
75.8
72.6
57.5
51.9
45.5
78.3
75.8
72.6
57.5
51.9
45.5
78.3
75.8
72.6
57.5
51.9
45.5
78.3
75.8
72.6
57.5
51.9
45.5
78.3
75.8
72.6
57.5
51.9
45.5
80.0
77.5
74.3
59.2
53.6
47.2
80.0
77.5
74.3
59.2
53.6
47.2
93.4
69.9
93.4
69.9
93.4
69.9
93.4
69.9
93.4
69.9
95.1
71.6
95.1
71.6
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