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    Solar

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Panama

Solar Market Outlook in Panama

The National Energy Plan 2015-2020 of Panama has an ambitious target of making 70 percent of the country’s energy supply coming from a renewable source within a 35-year period. This plan is part of the country’s long-term roadmap towards increasing energy efficiency and reducing carbon emissions through its energy system. 

The country has considered its renewable energy capacity and there are plenty of sources available. Therefore, they are not just looking at solar energy sources but others too like wind, geothermal, biomass, and hydropower. 

In 2019, Panama has reached 500 MW in solar PV energy. This was a huge leap from the previous year’s 176 MW solar capacity. This solar capacity rate is expected to continue growing as more solar projects are granted licenses. One of the largest projects to date is that of a Spanish firm that is looking at investing in a solar farm. 

Despite the positive outlook for the Panama solar market, there are undeniable challenges that the government is hoping to address. Among these challenges are the current power-market model (that favors conventional energy sources) and lack of flexibility measures. 

Solar Energy Equipment Supply Capacity in Panama

There are many global suppliers and distributors of solar power equipment that are serving the Panama market. This is good news as the local solar power investments are still in its infancy stage. Therefore, residential and industrial segments looking to expand its solar installations will have enough options available. 

Top 4 Major Seaports & Logistics in Panama

Panama has easy access to ports that facilitate logistics and handling of goods like solar power equipment from all over the globe. The list of the major seaports in Panama that facilitate handling of imported and exported goods include the ports in

  • Panama City
  • Colon, Balboa
  • Cristobal
  • Manzanillo.

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.