Noise Criterion Curves - Technibel SPA250X5TAA Technical & Service Manual

1. SPECIFICATIONS

1-8 Noise Criterion Curves

MODEL : SPA250X5TAA
SOUND LEVEL : HIGH 45 dB(A), NC 43
LOW
CONDITION : Distance 1m, Under the unit 1m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MODEL : SPA360X5TAA
SOUND LEVEL : HIGH 47 dB(A), NC 45
LOW
CONDITION : Distance 1m, Under the unit 1m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
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.
37 dB(A), NC 34
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
39 dB(A), NC 34
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MODEL : GR250X5TAA - GR250X7TAA
SOUND LEVEL : 53 dB(A), NC 45
CONDITION : Distance 1m, Height 1m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
: 380 - 400 - 415 V, 3 Phase, 50 Hz
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
CONTINUOUS
NOISE
10
60 125 250
BAND CENTER FREQUENCIES, Hz
MODEL
SOUND LEVEL : 54 dB(A), NC 45
CONDITION
SOURCE
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
CONTINUOUS
NOISE
10
60
BAND CENTER FREQUENCIES, Hz
– 25 –
500 1000 2000 4000 8000
: GR360X7TAA
: Distance 1 m, Height 1 m
: 380 - 400 - 415 V, 3 Phase, 50 Hz
125 250 500 1000 2000 4000 8000