There is much skepticism about solar energy and renewable energy, and this skepticism leads to a lot of myths and misinformation. A myth is widespread, but still a myth, but argued that the workers will be vulnerable line utility if their work brings them into contact with a grid-connected PV. A strong statement, but it can be justified? Let's take a look.
Where is the danger?
When it comes to workers 'safety line' at risk of grid-connected PVWhat is specific reference to which the inverter, the equipment that the DC (direct current) electricity by converting solar panels in the house-friendly AC (alternating current) electricity. They are AC-power is the most commonly used form of power, because it is easier to transport over long distances, and, consequently, modern equipment and devices specially designed to run on alternating current.
DC and ACThey have the power are fundamentally incompatible, so a method for converting DC to AC employees to form a bridge between the two, so the inverter.
What is an inverter?
First of all, because they "drive" and "converter", because after all, is what is an inverter - to convert direct current into alternating current? And this is exactly why it is called an inverter, a converter, however, because according to the IEEE (Institute of Electrical and Electronics Engineers) defines a single frequencyrefers to a plant, machine or device that changes direct current into alternating current. The basic function, the inverter is DC electricity from photovoltaic panels and batteries (which can only be saved, DC, and is used in off-grid and grid-connected systems with battery backup) for converting AC power , then either be fed into the grid or to power AC loads.
Inverter type
There are three types of inverters - square, square wave and modified sine waveWave. The square-wave inverters have little power and are suitable only for small loads. Modified square wave inverters, great lights and can cause a variety of loads at work, but may, in certain electronic devices, watches and microwaves to the digital timer (running fast or slow) and batteries for cordless tools problematic.
The sine wave inverters are the most commonly used in residential photovoltaic systems, because they have little in terms of productAnd distortion can also delicate equipment. This is the type of inverter suitable only for grid-connected systems.
Safety First
The inverters are the characteristics of a safety component in living systems. They are characterized by many of the same organizations that certify the most devices and are used by IEEE, UL and NEC required to automatically disconnect from the network certified under various conditions, including inverter malfunction, power failure, voltage fluctuationsinverters etc. Not only are safety devices built into their electronics, but when you are working around PV systems are trained electrical utility workers for security-conscious shopping, and production line maintenance, must comply with all scales of land as found in the drives, an additional safety net ceiling, when it comes to dealing with inverters.
Many families use their home electric generators to predict failures. If not properly equipped with aTurn the generator can produce electricity back to the very high voltage network. This situation has line workers to death, and led one of the reasons for its tight security.
That speaks for itself
The inverter safety record is second to none, so it is likely to assume with certainty that in the coming years, are accepted and an integral part of home electrical systems. There are many dangers to which the benefits and line workerstheir work, but the grid-connected photovoltaic inverters and is not one of them.
No danger in this myth!
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