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    Solar

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Finland

The state of Finland’s solar market

Anybody can easily assume that solar is not a feasible option in Finland because of Northern Europe’s climatic conditions. Surprisingly, the country is keen to develop its solar capacity albeit the less favorable climatic challenges. Over the last couple of years, the Finnish government has been working to build its renewable energy capacity. So, that is the current state of Finland’s solar market?

Well, the latest statistics reveal that Finland had an installed solar capacity of 214 Megawatts by the end of 2019. Residential installations account for 45% of the cumulative installed capacity and the rest is distributed amongst commercial and industrial installations. According to recent statistics, solar is the second least costly option for electricity generation. This is the primary reason for the solar market’s continued growth.

Currently, the Finnish solar market is ripe with opportunities for solar installers and other photovoltaic professionals. Are you one of them? If the answer is yes, you stand a chance of reaping big in Finland with a little determination and unrivaled expertise.

Solar equipment production and supply capacity in Finland

Generally speaking, Finland is a net-importer of solar equipment. Solar installers and other photovoltaic professionals mostly import equipment from Asian markets. Nevertheless, there is some module manufacturing capacity in Finland. Solarfeeds has got you covered if you need a reliable supplier that can meet your project needs.

Essentially speaking, we connect you to leading solar equipment suppliers. All you need to do is go to our inquiry page and send us a request for quotes. That is pretty convenient and time-saving, right?

Major Ports and logistics services in Finland

As I mentioned earlier, Finland is largely a net-importer of solar equipment. The country’s advanced ports and reliable logistics and forwarding services often simplify the importation process. Here are some seaports that are you should know;

  •  Port of Hamina
  •  Port of Jakobstad
  •  Port of Helsinki
  •  Port of Oulu
  •  Port of Imatra
  •  Port of Rauma
  •  Port of Mustola
  •  Port of Kristinestad

Electric Breaker

Electric Breakers

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).

Final Thoughts

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.