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Australia

Australia’s Solar Energy

The utilization of energy created by the heat and light of the sun and converting it into electricity is commonly known as Solar Power Energy. It was in the 1860’s when solar power technologies was first developed, arising from the distress of industrialist that the current coal, oil and fossil fuels supply would become scarce and limited. Thus, becoming more costly for individual households to afford.

The growing concern has then led to the re-evaluation and re-assessment of the international energy policies and regulations. According to the 2018 World Economy Outlook published by the Organization for Economic Co-operation and Development and the International Energy Agency, the global demand for energy increased by 2.1% in 2017 with a 398 GW of solar PV installed around the world, and, meeting the 2% of global electricity demand.

In which, the rate of installations are influenced by changes, alterations and updates in the policy mechanisms supporting such technology. Nonetheless, this trend is expected to significantly increase in numbers by another 25% by the year 2040.

As one of the fastest developing countries, the land down under has relied greatly on solar power energy as their preferred energy source for decades now. However, it was only then in the year 2015 when the age of solar power technology in Australia underwent a rapid growth. The increasing cost of energy resources like fossil fuels, has led to a significant number of households that are turning into solar energy.

The emergence of government funded incentive programs for the incorporation of domestic and commercial solar power utilization also proliferated. Through the years, solar-powered technology has become Australia’s optimal energy source.

Geographically speaking, the Australian continent is known to have the highest solar radiation per square meter of any continent with an average of 58 million petajoules (PJ) of solar radiation per year, which is approximately 10,000 times larger than the country’s total energy consumption. This has helped increase Australia’s Gross Domestic Product (GDP) to $275 million for every petajoule of energy consumed.

To date, there are 2.15 million or 21% of Australian households are recorded to have Solar Photovoltaic (also known as solar PV) with a combined capacity of over 12.9 gigawatts installed on their rooftops that directly converts sunlight into electricity using a semiconductor cell or solar PV cell. This type of solar power technology is the most common and widely used in households.

Electrical Disconnect used for below projects in Australia

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Electrical Disconnect

Wholesale Disconnects for Solar Systems

Essentially, safety disconnects allow users to rapidly shut down the system in case of an emergency. For this reason, disconnect switches are required to comply with electrical codes and pass inspection. 

A solar PV system usually has two safety disconnects. The first is the PV disconnect (or array DC disconnect). This kind of disconnect allows the DC current between the modules (source) to be interrupted before reaching the inverter. 

The second disconnect is the AC disconnect. The AC disconnect is used to separate the inverter from the electrical grid. In a solar system, the AC disconnect is typically mounted to the wall between the inverter and utility meter. This kind of disconnect may be a breaker on a service panel, or it may be a standalone switch. Additionally, it is sized based on the output current of the inverter. 

How to Size an AC or DC Disconnect?

Generally speaking, sizing refers to equipment, components, and connectivity (wiring) throughout a solar system as it relates to NEC requirements. The following terms are used to determine component output: 

  • Voltage
  • Circuit load
  • Amps or breaker size
  • Wiring or cables
  • Sizing and Protection of the AC Disconnect

NEC 690.10 stipulates that the circuit conductors between the inverter output and the building or structure disconnecting means shall be sized based on the output rating of the inverter. These conductors shall be protected from overcurrents in accordance with Article 240. The overcurrent protection shall be located at the output of the inverter. 

Important Features to Look For in Disconnect in Bulk?

Disconnects are incredibly useful for solar systems, and so, it is important to get the best possible disconnect for your own solar system. The following are the core features to look for in a disconnect: 

  • Offers bi-directional functionality, which breaks the arc regardless of normal or a reverse current flow
  • Includes all required components to meet NEC 690 requirements, including jumpers and labels
  • Guards against accidental contact with live parts with clear polycarbonate dead fronts
  • Available with modifications that allow customization to meet any application need
  • Sizing of Module Interconnection Conductors and DC Overcurrent Protection

According to NEC 690.80, where a single overcurrent device is used to protect a set of two or more parallel-connected module circuits, the ampacity of each of the module interconnection conductors shall not be less than the sum of the rating of the single fuse plus 125% of the short-circuit current from the other parallel-connected modules. 

Why Buy Wholesale Disconnects for PV Systems from Us?

Our website lists AC or DC disconnects for PV systems from reputable brands all over the world. As a result, you can expect that the AC or DC disconnects that we offer are of the best variety. They are characterized by numerous remarkable features, such as higher efficiency, reliable performance, and longer life span, thus giving them the ability to fulfill all your solar power needs. 

If you want to buy AC or DC disconnects for PV systems at low wholesale prices, then go through our website to explore products with profitable deals. You can also choose to send in your query at info@solarfeeds.com.

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