Sound Levels; Noise Levels(Vmh-E-F); Nc Curves(Vmh-E-F); Power Source - Mitsubishi Electric PEFY-P-VML-E Data Book

2. Sound Levels

2-1. Noise levels(VMH-E-F)

Ceiling concealed (VMH-E series)
Aux.duct
1m

2-2. NC curves(VMH-E-F)

PEFY-P80VMH-E-F
70
208V-60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125
OCTAVE BAND CENTER FREQUENCIES (Hz)
PEFY-P80VMH-E-F
70
208V-60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125
OCTAVE BAND CENTER FREQUENCIES (Hz)
2m
Measurement location
External static pressure (Low/Mid/High)
Model
PEFY-P80VMH-E-F
PEFY-P140VMH-E-F
(External static
pressure 35Pa)
High speed
NC60
NC50
NC40
NC30
NC20
250 500 1000 2000 4000 8000
(External static
pressure 170Pa)
High speed
NC60
NC50
NC40
NC30
NC20
250 500 1000 2000 4000 8000
Noise level at anechoic room
Model
208,220V
PEFY-P80
VMH-E-F
230,240V
208,220V
PEFY-P140
VMH-E-F 230,240V
External static
pressure
208V
Low
50Hz
Mid
High
Low 35
60Hz Mid 85
High 170
Low
50Hz Mid
High
Low 35
60Hz Mid 85
High 170
PEFY-P80VMH-E-F
70
208V-60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250
OCTAVE BAND CENTER FREQUENCIES (Hz)
PEFY-P80VMH-E-F
70
220V-50/60Hz
60
50
40
30
20
10
Approximate minimum
audible limit on
continuous noise
0
63 125 250
OCTAVE BAND CENTER FREQUENCIES (Hz)
1- 47
Unit : dB(A)
External static pressure
Low
Mid High
27
38 43
33
43 45
28
38 43
34
43 45
Unit : Pa

Power source

220V 230V 240V
40 50 80
- 115 130 170
190 210 220
40 50
115 130
190 210
50 60 100
- 115 130 170
119 220 240
50 60
115 130
190 220
(External static
pressure 85Pa)
High speed
NC60
NC50
NC40
NC30
NC20
500 1000 2000 4000 8000
(External static
pressure 40Pa)
High speed
NC60
NC50
NC40
NC30
NC20
500 1000 2000 4000 8000
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