INSTALLATION & SERVICE INSTRUCTIONS
MANUAL FOR SOLAR PV MODULE
www.sovasolar.com
SERIES / PARALLEL CONNECTIONS
Modules can be wired in series to increase voltage. Connect wires from positive terminal of one module to
the negative terminal of the next module. All modules connected in series should be of the same model
number and/or type. Make sure the number of modules connected in series does not exceed: ((Maximum
system voltage / Open circuit voltage of the module) — 1) at standard condition, AM1.5G, 25 degrees
temperature, 1,000 W/m2.Connect modules in parallel to increase current. Connect wires from the positive
terminal of the one module to the positive terminal of the next module. Do not connect modules in parallel
without using a connection box. The number of parallel strings depends on the system integrator’s
requirements and the inverter ratings.
This can be done using the formula below,
Max System voltage = X * Voc * [1 + ((Tα-Voc (%) x (25 - Tmin))] Where
X - No: modules which are connected in series.
Voc - Open circuit voltage of each module (Refer to the Data Sheet)
Tα-Voc - Thermal coefficient of open circuit voltage for the module in Percentage (refer to Sova
Solar Spec sheet)
Tmin - Minimum ambient temperature of the location of the plant
GROUNDING
Module frames should be connected to an earth ground for safety and protection from lightning. The array
frame shall be grounded in accordance with NEC Article 250 (USA) or CEC in Canada. A good connection
between the grounding hardware is essential for an effective ground. The anodization on a module frame
provides a coating to minimize the corrosion due to weather and it acts as a barrier that reduces the
effectiveness of the grounding connection. For an adequate ground, the grounding hardware should pierce
the anodization layer.
1.
Stainless steel Bolt -304 with hexagonal and cheese head
Bolt Size: 8 — 32 (As per ASME standard chart)
In Metric standard: M4 x 16 mm lon engage thread is
13.5 mm with the frame (2.5 mm frame thickness and
16mm length of the screw)
2.
Stainless Steel Cupped Washer —M4 Stainless steel 304.
3.
Stainless Steel Flat Washer — M4 Stainless steel 304.
4.
Tar Washer — M4 Stainless steel 304
5.
Stainless Steel Nut — M4 stainless steel 304.
