Solar Market Outlook in Poland
Poland is considered as the solar market to watch in Europe. Needless to say, solar energy is becoming increasingly popular and in demand in Poland and it continues to boom.
The Institute for Renewable Energy in Poland reports that the country is experiencing a developmental boom in terms of the PV market. In fact, this country is the first one in the European Union based on the PV power growth rate, especially based on cumulative annual growth rate.
From 2016 to 2020, the growth rate of the solar power market is 114% (the EU average is only 10.3%). The PV market growth in Poland for 2020 nearly landed it in the top 10 in the world (it was ranked at 13).
The rapid growth of solar power in Poland puts it at 3.9 GW capacity as of 2021. It puts the country right on track to achieve its goal of 7.8 GW in solar capacity by 2025.
Based on the existing data and forecast trends, experts agree that Poland will hit 46% in annual solar capacity by 2024. This growth will be supported by the drop in prices of renewable energy in the country along with distributed energy technologies.
Solar Energy Equipment Supply Capacity in Poland
There is a huge array of options for solar power equipment suppliers and distributors in or outside of Poland. This makes it easy for residential and industrial installations of solar energy possible.
It is also part of the reason why there is a significant developmental boom in the country’s solar market.
Top 8 Major Seaports & Logistics in Poland
Poland has a thriving maritime port industry making it efficient for logistics company to handle goods and equipment in and out of Poland. The Port of Gdynia is the main seaport in Poland but there are a few other options too such as: Darlowo, Hel, Świnoujście, Władysławowo, Kołobrzeg, Gdansk, and Poznan.
When installing a solar panel system, you have to be familiar with the electric breakers and how it works with a solar PV system to avoid future electric problems. The electric breaker is one of the main components of a solar power system that provides safety mechanisms. If ever the electrical wiring of your system has too much current flowing through it, these breakers can easily cut the power until your solar installer can fix the system’s problem.
For today’s article, we will discuss electric breakers and their function in solar photovoltaic systems.
What is an Electric Breaker?
An electric or circuit breaker is an electrical switch designed to protect electrical circuits from damage caused by overloading of current or a short circuit. The basic function of an electric breaker is to prevent the current flow once protective relays detect a fault in the system.
Although it is frequently interchanged with a fuse, which is the simplest Over Current Protection device (OCPD) in electrical circuits, a circuit breaker, is a much-evolved type of device that interrupts the current flow. The main difference between the two is electric breaker is resettable and the fuse is not. The fuse sacrifices itself while protecting the system to overheat, while the circuit breaker can withstand hundreds and thousands of operations. Another difference is that electric breakers are used with relatively higher currents.
Components of Circuit Breaker
A circuit breaker system is composed of three parts. These three components are the sensing system, relay, and the combination of contacts and the contact actuator. A sensing system is responsible for detecting an overload situation, while a relay is responsible for transferring the information to the switching arrangement, and the combination of contacts and the contact actuator. This electric arrangement is usually observed in power transmission and distribution networks dealing with very high currents, voltages, and powers.
Circuit Breakers Calculation in Solar Panel Systems
When connecting circuit breakers to the PV system, you have to follow the recommended calculations to avoid future problems and damage to the entire system. The recommendations for using overcurrent protection devices including circuit breakers in solar modules against overloading conditions are given in IEC 60269-6 (volume 6 of IEC 60269-6) and also UL 248-19.
For circuit breakers, IEC recommends a 20% and 25% margin in voltage and overload current. Most of the time, the ratings are specified by the solar manufacturers at given ambient conditions. If the temperatures exceed this given value, derating must be applied according to the manufacturer’s specifications.
When it comes to breaker sizes for solar panels, NEC requires the breakers to be sized at 125% of the inverter’s rated output. So a 7680W inverter that outputs 240V, outputs 32A (7680W ÷ 240V = 32A). That requires a 40A breaker (32A x 125% = 40A).
If you owned a solar panel system at home, you have to understand how circuit breakers work to prevent catching fires at home. These devices are one of the major components of the PV solar system as they protect the system wiring from getting too hot and accidentally catch fire if short circuits occurred. Thus, understanding the breaker itself and its proper calculations in the PV system should be done.