What is it and how to choose a power generator?
A current generator, or portable 12000 watt generator, is a machine capable of converting a certain source of energy, mechanical, chemical, light or thermal, into electrical energy. These tools are very useful for those who frequent places where electricity does not arrive. Going on a camping holiday, organizing a trade fair, working in places where electricity goes wrong, or simply providing a street service, are activities that would be difficult, if not impossible, without the use of this device. There are different types of generators, different for: the fuel used to produce energy, the power delivered, the speed of rotation, frequency stability and noise levels. So, how to choose the most suitable current generator for your needs? First of all, you need to know the power required for use and select the type of fuel you prefer.
How to avoid choosing the wrong generator?
If we choose a model with a power too low compared to the maximum absorption of the appliances or tools we want to run it will not be able to provide the necessary electrical power.
On the contrary, if we purchase a generator with too much power in excess of what is needed, in addition to an excessive purchase cost, we will frustrate the electricity consumption/performance ratio because we will have to bear generator running costs that are much higher than the required performance, which in fact could satisfy a correctly sized generator.
How do I find the right power generator for my needs?
For domestic use, portable generators ranging from 1 to 3 KW are usually sufficient. For construction sites, where absorption is imported, generators with power from 10KW to over 25 KW are required. Current generators are subject to a decrease in power with increasing altitude: every 1000 meters the generator loses 9% of its power. A generator reaches its maximum efficiency when used at 80% of the nominal power indicated in KW in the technical data: if my equipment absorbs 2KW as a whole, a 2.5 KW generator will be needed to cover the above requirement with 80% of its maximum performance.
The starting point: what is it and how is it calculated?
The starting point is the amount of current needed to start the tool connected to the generator. In concrete terms, the inrush is a peak of power that the generator must be able to produce at the moment in which it must start our equipment. To determine whether a generator has the necessary inrush it is sufficient to apply a simple formula: absorption of the maximum power indicated on the plate of the electro tool multiplied by 2. Example: electric drill 1200 Watt for coefficient 2= 2400 Watt the necessary generator power.
Definition of rated power
It is the power that the generator can deliver continuously over the long term. It does not guarantee maximum efficiency because it is only given with a use equal to 80% of the nominal power (see above).
Definition of maximum or peak power
This is the maximum power the generator can deliver for short periods. It differs from the starting point because the first is a technical characteristic of each single generator, the second depends on the tool connected to the generator and represents the power required to start the tool itself. It is good practice for manufacturers to indicate the two types of power. When only one power is generically indicated without specifying whether it is nominal or maximum power, the user is inevitably misled. It is advisable to evaluate the only power indicated as the maximum power.
The electrical absorption of power tools : Let’s see an example together
The difference between KVA and KW of a generator can be expressed in Kilowatts (KW) or Kilovoltampere (KVA). Knowing the difference between watts (W) and Voltampere (VA) is useful in order to identify more accurately the ;field of application; of the current generator.the unit of measurement of electrical power. The KW, as easy to deduce, is 1000 watts. The KW measures the “active power” of the generator. Definition of Volt Ampere The Volt Ampere measures the “apparent electrical power”. The KVA is 1000 Volts. What has been said above, the result of physical laws, is explained in detail.
The more traditional devices are very noisy and therefore also problematic from a legislative point of view. Due to excessive urban noise pollution, regulations have been issued prohibiting the exceeding of a certain noise threshold, which is harmful to the human ear. Choosing a silent machine is the best option in order not to run into health problems and avoid unpleasant reminders. An example is the Honda generator, equipped with a coating and acoustic panels that can significantly reduce the intensity of noise during operation of the machine.