Alpha Technologies AlphaGen PN-6x-T 7.5kW 48Vdc - Manual (Page 21)

042-288-B0-001, Rev. A2 21
2.0 Site Preparation
2.1 Site Considerations
• Where possible, select a site away from houses, and above the 100-year flood plain.
• Place in a shaded location to minimize the effects of solar loading.
• Avoid locating the enclosure where it obstructs or inhibits visibility.
• Locate the enclosure away from sprinkler systems, or other sources of forced water.
• Locate the enclosure out of the prevailing wind to minimize the buildup of snow or wind-
borne dust.
• Determine if soil conditions are suitable for the appropriate grounding system.
• Verify utility power cabling is terminated at the site.
• Ensure maintenance access and exhaust clearance.
• Locate the enclosure to allow for 36" of clearance around all enclosure door and exhaust
openings.
2.2 Acoustics
Nuisance noise is of concern to nearby residents. Nuisance noise is a directional noise
which can cause discomfort during engine-generator operation to nearby residential
occupants (audible levels may vary due to absorption and reflection caused by the immediate
surroundings).
Audible impact on neighborhoods is mitigated by recent advances in mufflers, flame resistant
sound materials, intake air sound attenuators, along with improved cabinet airflow dynamics.
The figures below show the measured audible levels from CE-3x2 5KW and PN-6x-T 7.5kW
generators at full load. Note the symmetry of these emissions. Deployment decisions must
include noise consideration to minimize nuisance noise.
Fig. 2-1, Generator Sound Levels at 100% Load
10' 20' 50'
70. 3
64. 3
56. 3
dB a
Feet
5'
10'
North East
71.4dBA
East
70.0dBA
North
73.0dBA
South East
70.5dBA
South
72.4dBA
South West
70.1BA
West
71.9dBA
North West
72.8dBA
Intake
Exhaust
CE-3x2 PN-6x-T