SunRotor Solar Pump, Инструкция по установке и руководство по ресурсам

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5 S
OLAR
A
RRAY
I
NSTALLATION
5.1 S
IZING THE
S
OLAR
A
RRAY
Be sure that the PV array has been properly sized to meet the pump's power requirement. A PV
array will only produce its rated power when properly aligned with the sun and no dust or debris
accumulation. Solar panels offer peak performance in cooler temperatures. An undersized array can
cause poor starting and reduced flow in low light conditions. An oversized array is recommended (at
least +20%); the pump will start earlier and run later, as well as have higher performance on cloudy
or hazy days.
5.2 L
OCATION OF THE
S
OLAR
A
RRAY
Install the solar array in a location that will maximize sun exposure. If necessary, it may be placed a
substantial distance from the wellhead to gain sun exposure, reduce visibility, etc. The greater the
distance, the larger the electrical wire must be, so cost rises with distance.
A
TTENTION
: Shading a portion of a PV array will stop the pump. Each PV module
(panel) contains a series of small solar cells. Any cell that is shaded acts like a resistor
and will reduce the output of the entire module. So, shading just one corner of the solar
array will reduce the power substantially, slowing or possibly stopping the pump.
5.3 S
OLAR
O
RIENTATION
For optimal performance, the solar array must be oriented within 10° of true (solar) south.
Depending on location, a compass reading may show an error of as much as 20°. To correct this
discrepancy, apply the magnetic declination for the region. Many regional maps indicate the
magnetic declination. Additionally, this information can be found on the National Geophysical Data
Center website (
http://www.ngdc.noaa.gov/geomag-web/#declination ).
5.4 S
OLAR
A
RRAY
M
OUNTING
R
ACK
C
AUTION
: Use a mounting structure engineered for wind resistance, ease of adjustment,
and most importantly, safety. Follow any and all instructions and cautions provided
with the mounting rack.
For the best quality and economy, factory-built mounting racks are recommended. Pole-top racks are
especially popular for solar water pumps. Factory-built racks are available from your Authorized
SunRotor
®
Dealer.
Place the bottom of the array at least 2 feet (.6 m) above ground to clear rain spatter, growing
vegetation and snow. Keep in mind that trees and perennial plants will grow taller over the years.
A pole-top mounted rack is advised. It allows the array to be placed high enough to clear the reach of
livestock, people and growing vegetation—potentially eliminating the need for fencing. If the rack is