Voltronic Power EnerSolar 3K PV, User Manual

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1. Introduction
1-1. Overview
The EnerSolar inverter is designed to convert solar electric (photovoltaic or PV) power into
utility-grade electricity that can be sold to the local power company. This inverter is allowed for
2 arrays of PV modules. Embedded with two smart independent MPPTs, the EnerSolar PV
inverter can operate at optimum power output voltage.
Figure 1 Basic PV System Overview
This inverter is only compatible with PV module types of single crystalline and poly crystalline.
Do not connect any sources of energy other than these two types of PV modules to the
EnerSolar inverter. When designing the PV system, ensure that the values comply with the
permitted operating range of all components at all times. See Figure 1 for a simple diagram of
a typical PV system with EnerSolar Inverter.
1-2. Affecting Factors for Performance of the Inverter
There are a lot of factors to influence the performance of this inverter.
Rating for PV Modules
PV modules are rated at ideal factory conditions, such as specified illumination (1000 W/m2),
spectrum of the light and temperature (25 °C / 77 °F). This is called the STC (Standard Test
Condition) rating and is the figure that appears on the spec label of PV module. Generally
speaking, only around 60% to 70% of its peak STC-rated output will be produced from your
PV modules due to unpredicted environmental factors.
Temperature and Power Reduction
Environment temperature affects the power output of PV modules. Higher the temperature,
lower the power output of PV module. Comparing with pole-mounted PV module array,
roof-mounted PV module array generates less power due to less air circulation and excess
heat from roof top.
Distribution Box Electric grids
PV module 2
EnerSolar PV inverter
PV module 1