Dulas Solar VC150, Руководство пользователя

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5: TILT AND DIRECTION OF PHOTOVOLTAIC ARRAY
5.1 General
The tilt of a photovoltaic array is the angle created between the surface of the array
and the horizontal.
The tilt should be approximately equal to the latitude of the site, except in case
where the latitude is less than 5
0
either North or South, in which case the tilt should
be maintained at 5
0
.
A line normal to the surface of the array points out the direction of a photovoltaic
array.
A photovoltaic array should always slope towards the South when mounted in the
Northern hemisphere and always slope towards the North when mounted in the
Southern hemisphere.
For photovoltaic refrigerator installations, neither the tilt or direction needs to be
measured with any great accuracy, but both should be correct within 10 degrees.
Array tilt may be measured with an inclinometer, which is an instrument designed
especially to measure slope or a spirit level and ruler or tape measure and some
simple calculations. These methods are described in the INSTALLATION
HANDBOOK for Photovoltaic Refrigerators.
The best method however is to use a TEMPLATE (triangle) and SPIRIT LEVEL as
described on the next page.
Array direction may be measured with a compass.