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    Solar

Top Electrical Disconnect Suppliers in South Africa

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South Africa

Solar Market Outlook in South Africa

South Africa is striving to reduce its reliance on the state-owned utility for electric generation. Therefore, it is exploring sustainable solutions and renewable energy sources like solar provides the most viable answer. In addition, the current electric utility is unable to meet the power demand due to operational and financial issues. 

The South African government recently considered solar and renewables to address power shortage. The South Africa Photovoltaic Industry Association reported that the new PV systems installed in the country generated a total capacity of 1,313 MW. Of the new installations, about 813 MW of them were dedicated for utility scale and the remaining 500 MW were from distributed generation arrays. By the end of December 2020, the total solar capacity in South Africa reached 4,172 MW. The residential installations contributed to 20% of the country’s current solar capacity. 

The continued expansion of solar capacity in the commercial and industrial scale has prompted the government to continually evaluate its policies. It is also integrated into the government’s post-covid economic recovery plans. 

Solar Energy Equipment Supply Capacity in South Africa

If you are looking for solar equipment suppliers in South Africa, there are plenty of options. You can also find numerous global and online suppliers and distributors to meet your solar power requirements. 

Top 8 Major Seaports & Logistics in South Africa

The coast of South Africa provides easy access to trade and logistics activity. The following are the major ports in the country:

  • Port of Durban,
  • Port of Richards Bay,
  • Port Elizabeth,
  • Port of Cape Town,
  • Port of Coega,
  • Port of East London, 
  • Port of Saldanha.

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 [email protected]