– 26 –
REMARKS
: 1. Value obtained in the actual place where the unit is installed may be slightly higher than
the values shown in this graph because of the conditions of operation, the structure of
the building, the background noise and other factors.
2. The test results were obtained from an anechoic room.
NOTE
To evaluate “Noise level” the maximum number of the measured OCTAVE BAND
SOUND PRESSURE LEVEL is used. Read the number on each BAND CENTER
FREQUENCIES (horizontal axis) ranging from 63Hz to 8000Hz and select the maximum
value (vertical axis) among them.
MODEL : CA480X5TAA
SOUND LEVEL : HIGH
43 dB(A),
NC 36
LOW 36 dB(A),
NC 24
CONDITION : Distance 1m,
Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
MODEL : GR480X7TAA
SOUND LEVEL : 56 dB(A), NC 47
CONDITION : Distance 1 m,
Height 1 m
SOURCE : 380 - 400 - 415 V, 3 Phase, 50 Hz
60
50
40
30
20
10
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0dB=0.0002
µ
bar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
NC-20
NC-40
NC-50
NC-30
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-70
NC-50
NC-20
NC-60
NC-40
NC-30
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0dB=0.0002
µ
bar)
1. SPECIFICATIONS
