Real Estate

Introduction to Investors

In the context of renewable energy, an inverter is a device that converts DC battery voltage into grid-type AC power.

Most medium to large scale solar power systems are designed to power everything from grid-type AC voltages “reversed” from the DC battery bank. The advantage that this gives us is that we can buy conventional appliances from an electricity retailer. An energy efficient light globe can be somewhat expensive in a 12 volt DC version and having a 24 or 48 volt lighting system makes finding a suitable bulb even more difficult.

Investor Ratings

The three qualifications you should consider when buying an investor are:

  1. Continuous classification: This is the amount of power you can expect to use continuously without the inverter overheating and shutting down.
  2. Half hour qualification: This is useful as the continuous rating may be too low to operate a power tool or high energy consuming appliance; however, if the appliance is only to be used occasionally, the half hour rating may be sufficient.
  3. Surge index: High overvoltage is required to power some appliances, and once in operation, they may require considerably less power to keep running. The inverter must be able to maintain its surge rating for at least 5 seconds. Televisions and refrigerators are examples of items that require relatively low power once in operation, but require high overvoltage to start.

Types of investors

There are basically two types of inverters: modified sine wave (also known as modified square wave) and true sine wave. The differences between these two types of investors are subtle but significant in the way they operate.

Modified sine wave inverters

A modified sine wave inverter can adequately power some electrical appliances and power tools. It’s cheaper, but it can have compromises with some loads like computers, microwave ovens, laser printers, watches, and cordless tool chargers. Virtually all low-cost inverters are “modified sine wave”. A modified sine wave is easier and cheaper to produce than a sine wave inverter.

These inexpensive inverters are generally available from electrical stores, hardware stores, auto stores, and electronics suppliers. They generally lack many features such as autostart or any kind of adjustability. The devices are typically only 70% efficient, so expect some significant power losses if you are using a modified sine wave inverter in your system.

True sine wave inverters

A true sine wave inverter is designed to replicate and even improve the quality of electricity supplied by utility companies. To operate high-end electronic equipment, a true sine wave inverter is recommended. The efficiency has reached about 94% and the electricity from these devices is of a higher quality than the electricity grid almost anywhere in the world.

A high-quality inverter will include:

  • An automatic start system. An autostart allows an inverter to go into a low power standby state when nothing is connected and turned on. This will save you a great deal of manual switching and / or wasted power
  • Adjustability. Also useful is the ability to adjust parameters such as automatic start and battery discharge depth.
  • High quality heavy duty power transformer. A heavy-duty inverter generally means a high-quality, heavy-duty power transformer.

If you use sensitive electronic equipment, take no chances – get a true sine wave inverter. The additional cost will outweigh itself in energy efficiency.

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