Chapter 3: Electrical Installation; Installation; Grounding - SolarEdge Smart Modules Installation Manual

Chapter 3: Electrical Installation

Details for electrical installation in accordance with the IEC61730-1.

Installation

The maximum system voltage of the SolarEdge modules is 1000 V.
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The power optimizers regulate the string voltage at a constant level, regardless of string length and environmental conditions.
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Under normal conditions, a module might produce more current and/or voltage than reported at standard test conditions
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National Electrical Code (NEC) in Article 690 shall be followed to address these increased outputs. In installations not under the requirements of the NEC, the
values of Isc and Voc marked on this module should be multiplied by a factor of 1.25 when determining component voltage ratings, conductor capacities,
over current device ratings, and size of controls connected to the PV output.
Each s eries-connected, string of modules shall be provided with the maximum series overcurrent protective device, specified as 15A for the 6 inch cell
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module series.
Use a special solar cable and plugs for installing the PV system and make sure that all connections are safe and tight. The cable cross section size should be
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2
4mm (12AWG) and able to withstand the maximum possible system open-circuit voltage.
Bypass diodes are included in module junction boxes to avoid decreased module performance in the event of shade or shelter. Check the relevant
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specifications for the specific diodes of the junction box.
For information about electrical data of the smart modules see "Smart Module - Technical Specifications" on page 12. For temperature coefficient refer to
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the following table:

Grounding

Use the marked 5.5 mm grounding holes (5.5mm) to ground the anodized aluminum frame. Use an M5 nut, an M5 gasket, and an M5 bolt, Fastening bolt
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and a Ground wire. All nuts, bolts, and gasket are type M5 and should be made of stainless steel, see Figure 9
Fix the Ground wire on Fixed end through fastening bolt.(Note that the copper wire cannot be attached directly to the aluminum).
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Put the bolt through the Fixed end and then through the hole in the aluminum frame.
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Add the gasket and nut on the other side of the bolt and tighten to secure all parts. The tightening torque should be 2.1±0.1 N*M.
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1 Standard Test Conditions (STC): 1000 W/m², cell temperature 25°, air mass AM 1.5
Smart Modules Installation Guide MAN-01-00520-1.0
Isc Voc
0.04%/℃ -0.29%/℃
Figure 9: Grounding the aluminum frame with copper wire
Chapter 3: Electrical Installation
1
. The requirements of the
Pmax
-0.40 %/℃
10