Electric Generators | Generators

Power generators (or generator sets) are devices capable of transforming mechanical energy into direct current or alternating current in order to power electrical appliances. A power generator is essential if you need an independent source of electricity in places without a stable power supply, such as construction sites, isolated locations, campsites, or where the electricity supply is interrupted due to temporary faults or malfunctions (e.g. blackouts).

A first major distinction, in order to choose the most suitable electricity generator for your needs, can be made by distinguishing between two macro-categories: 1500 rpm generators and 3000 rpm generators. The term "rpm" on the generator refers to "rotations per minute", i.e. the number of revolutions of the motor in 60 seconds.

• 1500 rpm electric generators are less common and are designed for more demanding jobs, where it is necessary to operate for many consecutive hours.
• 3000 rpm (revolutions per minute) electricity generators are the most common on the market and are recommended for purely emergency, occasional or short-term use.

What is a generator, how does it work and what is it used for?

Power generators are devices designed to convert mechanical energy into electrical energy, ensuring a direct current power supply in the absence of a stable source of electricity.

These instruments mainly consist of an engine, an alternator and a voltage regulator. The engine, powered by petrol, diesel or specific mixtures, generates mechanical movement that is transformed by the alternator into electrical energy. The voltage regulator ensures that the energy produced is constant and can be used to power various devices.

The operation of electric power generators may vary depending on the type and specific characteristics of the model chosen. For example, inverter generators are equipped with an electronic system that regulates the frequency of the current, making it suitable for sensitive electronic equipment such as computers and televisions. Petrol generators are known for their ease of use and fuel availability, while diesel models offer greater efficiency and durability, making them ideal for intensive and prolonged use. Automatic start generator sets are also designed to start automatically in the event of a power failure, ensuring uninterrupted operational continuity.

Generators offer numerous advantages that make them indispensable in many situations. We have summarised the main advantages below:

• Reliability: Power generators provide a safe and reliable source of energy that is essential in emergency situations. This is especially true for fixed models, which offer a stable and permanent solution for powering large structures.
• Versatility: Available in different types and power ratings, generators can be used for a wide range of applications, from camping to building construction.
• Ease of use: Many models are designed to be easy to start and maintain, making them accessible even to those without advanced technical skills.
• Portability: There are portable models that can be easily transported and used in different locations.
• Automatic start-up: Generators equipped with this feature are designed to start automatically in the event of a power outage, ensuring a seamless transition between the mains power supply and the generator's power source.

There are different types of power generators, each designed to meet specific needs. Here is a brief list of the main types available, which we will discuss in more detail below:

• Inverter generator sets: Ideal for sensitive electronic equipment, they offer stable, high-quality power.
• Petrol power generators: Versatile and easy to use, they are perfect for temporary and mobile needs.
• Diesel generator sets: Sturdy and efficient, suitable for intensive and continuous use.
• Automatic start generators: Perfect for ensuring operational continuity in the event of a blackout, they start automatically.

Inverter generator sets are designed to produce electricity to power sensitive electronic devices. Thanks to their advanced technology, these generators convert direct current into alternating current, ensuring a stable voltage without peaks. This makes them particularly suitable for powering computers, televisions and other sensitive equipment that can be damaged by voltage fluctuations.

• Power quality: They produce stable, high-quality electrical power.
• Fuel efficiency: Lower consumption compared to traditional generators.
• Quietness: They operate at lower noise emission levels, ideal for noise-sensitive environments.
• Compact size: Their small size makes for easy transport and storage.

These generators are often used in campsites, outdoor events and situations where a portable and quiet generator is required.

Petrol generators are very popular due to their versatility and ease of use. These generators use petrol as fuel, which is readily available, making them a practical choice for a wide range of applications. They are available in a wide range of power ratings, from compact models for domestic use to more powerful versions for construction sites and industrial applications.

• Ease of use: Simple and immediate start-up even in adverse weather conditions.
• Low weight: They are generally lighter than diesel models, which makes them easy transport and install.
• Fuel availability: Petrol is readily available.
• Versatility: Suitable for a wide range of applications, from small domestic jobs to large construction sites.
• Regular maintenance: Necessary to ensure efficiency and durability.

Diesel generators are known for their robustness and efficiency. They use diesel as fuel, which is more economical and offers greater energy yield than petrol. These generators are ideal for intensive and prolonged applications such as construction sites, agricultural and industrial activities.

• Efficiency: Reduced fuel consumption and higher energy density.
• Durability: Sturdy construction and long service life.
• Suitable for intensive use: Ideal for industrial and agricultural applications.
• Weight and noise: They are generally heavier and noisier, which may limit their use in domestic or noise-sensitive environments.

Automatic start generator sets are designed to ensure uninterrupted operational continuity. These generators start automatically in the event of a power failure, immediately providing electricity without the need for manual intervention. They are particularly useful for homes, hospitals and businesses that cannot afford power outages.

Automatic start-up can be integrated externally or optionally, depending on the model. These generators are often used as backup solutions in areas prone to frequent power outages, ensuring safety and peace of mind.

• Operational continuity: They start automatically in the event of a blackout.
• Safety: Ideal for critical environments such as hospitals and businesses.
• Convenience: They eliminate the need for manual intervention during emergencies.

Generator sets have various technical features that determine their efficiency, versatility and suitability for specific uses. Here are the main ones:

• Type: Portable, wheeled, fixed trolley.
• Power supply: Petrol, diesel, mixture.
• Type of current generated: Single-phase 230 V, three-phase 400 V Full Power.
• Effective power: Varies from up to 19 kW to over 10 kW.
• Engine brand: Lombardini, Briggs & Stratton, Honda, proprietary engine.
• Automatic or ATS start-up: Optional integrated external.

The type of power generator affects its portability and ease of use.

• Portable: Easy to transport, ideal for camping and small jobs.
• Wheeled: Equipped with wheels, easy to move, suitable for construction sites.
• Trolley: Combines portability and robustness for demanding applications.
• Fixed: Permanent installation ensures a stable power source.

The generator's power supply is a crucial factor in choosing the right model.

• Petrol: Versatile and easy to find, ideal for general use.
• Diesel: Greater efficiency and durability, suitable for intensive use.
• Mixture: Combines the advantages of different fuels to improve efficiency.

The type of current generated by power generators varies between single-phase, three-phase and full power.

• Single-phase generators produce 230 V electrical current suitable for most common household appliances and devices.
• Three-phase models generate 400 V current, which is required for industrial machinery and heavy equipment.
• Full Power generators offer the versatility of supplying both single-phase and three-phase current, guaranteeing the same output power for both types of current.

The effective power of a generator indicates how many kW it is capable of generating at its main outlet. The power ranges from models with capacities up to 19 kW, ideal for small devices and domestic use, to models exceeding 10 kW, necessary for industrial applications and large construction sites.

it is important to choose a generator with sufficient production margin to handle consumption peaks, which can absorb up to twice the nominal consumption of a device.

The engine brand is an indicator of quality and reliability. Here are the main brands of generator set engines:

• Lombardini: Recognised Italian quality.
• Briggs & Stratton: World leader in petrol engines made in the USA.
• Honda: Advanced technology and Japanese quality.
• Proprietary engine: Variety of options at competitive prices.

Automatic start or ATS (Automatic Transfer Switch) is a key feature for emergency generators, allowing the generator to start automatically in the event of a power outage. The installation and initial start-up of these generators must be carried out by a qualified electrician to ensure maximum safety and functionality.

This function can be:

• External: Automatic start-up external to the generator.
• Integrated: Automatic start-up integrated into the generator.
• Optional: Automatic start-up available as an option.

Electricity generators can be used in both professional and domestic settings, offering solutions to suit different needs. Choosing the right generator set depends on the intended use, frequency of use and technical specifications required to ensure optimal performance.

Professional power generators are designed for intensive and prolonged use. These models offer high power, robustness and reliability, making them ideal for construction sites, farms and industrial activities. The main technical features that distinguish them include:

• High power: Generators exceeding 10 kW capable of powering heavy machinery and large structures.
• Durability: Sturdy construction and resistant materials for continuous use.
• Fuel efficiency: Diesel or petrol engines with low consumption and long autonomy.
• Three-phase current: Necessary to power industrial equipment and high-powered machinery.
• Automatic start-up: ATS function to ensure operational continuity in the event of a blackout.

Professional generator sets are often used in environments such as construction sites, hospitals, commercial or manufacturing activities, as they are capable of powering various tools and machinery simultaneously without interruption. In agriculture, generators are used to power irrigation pumps, field processing equipment and product storage systems.

Home power generators are designed for less intensive use than professional models. These generators offer less power but are still effective for powering small appliances, tools and electronic devices during a power outage or in emergency situations. The main technical features of these models include:

• Moderate power: Generators ranging from 19 kW to approximately 5 kW, sufficient to power household appliances and devices.
• Portability: Lightweight and compact models that are easy to transport and use in different locations.
• Ease of use: Simple start-up and low maintenance.
• Single-phase current: Suitable for most common household appliances and electronic devices.
• Affordable: Competitive prices to suit household budgets.

Domestic generators are particularly useful during prolonged power outages, ensuring that refrigerators, lights and other essential appliances continue to function. In addition, hobbyist models are perfect for those who enjoy outdoor activities such as camping, hiking or DIY, providing a reliable source of power when the mains electricity supply is unavailable.

Buying a power generator requires careful consideration of your needs and the technical characteristics of the product. A buying guide can help you identify the most suitable model, ensuring a wise investment. Here are some key considerations to keep in mind during the selection process.

First, we invite you to think about the needs you want to meet with the generator set. The main ones are as follows:

• Home backup: If the generator is intended for home use to power appliances during blackouts, look for models with a power output between 19 kW and 5 kW, preferably petrol for ease of use.
• Outdoor activities: For camping, hiking or DIY projects, choose a portable inverter generator that offers stable, high-quality power with sufficient output for small appliances and tools.
• Industrial applications: If the generator is intended for construction sites or agricultural activities, opt for diesel models with a power output greater than 10 kW and three-phase capacity, ensuring robustness and durability.
• Business continuity: For businesses that require an uninterrupted power source, select generators with automatic start-up (ATS) and full power capacity to ensure a constant and reliable power supply.

At this point, we recommend that you consider the following aspects:

• Power required: Determine the power required to power the devices you intend to connect. Check the total power consumption of the appliances and add a safety margin to handle consumption peaks.
• Type of power supply: Choose between petrol, diesel or mixed fuel based on your usage needs, environmental considerations and fuel availability.
• Portability: Consider whether you need a portable trolley model or a fixed model based on how often you need to move it and the conditions of use.
• Type of current generated: Decide whether you need a single-phase, three-phase or full-power generator based on the appliances you intend to power.
• Start-up functions: Consider the option of an automatic start-up (ATS) to ensure operational continuity in the event of a power outage.
• Engine brand: Opt for recognised brands such as Lombardini Briggs & Stratton or Honda for greater reliability and generator durability.
• Cost: Set a budget and look for models that offer the best value for money based on the technical features you require.

Using these guidelines can help you make an informed purchase and ensure that the generator you choose meets all your expectations.

Choosing a generator from a reliable brand is essential to ensure quality, efficiency and durability. AgriEuro offers a wide range of power generators manufactured by the best brands in the industry. Each brand has its own distinctive features that make it unique. Here is an analysis of the main brands available on AgriEuro.

• Hyundai power generators: Hyundai is a global brand that manufactures high-quality power generators known for their energy efficiency and reliability. Hyundai generators are available in various power ratings suitable for both small domestic use and large industrial applications.
• Mosa power generators: Mosa is recognised for producing professional power generators ideal for construction sites and industrial applications. Their models are designed to withstand extreme conditions and ensure a long operating life.
• Pramac generator sets: Pramac is synonymous with innovation and quality in the power generator sector. They offer a complete range of models from small portable generators to powerful industrial generators, all designed to ensure efficiency and reliability.
• BlackStone power generators: BlackStone is known for its sturdy and reliable generators, ideal for domestic and professional use. Their range includes petrol and diesel models designed to deliver consistent and long-lasting power.
• BullMach generator sets: BullMach offers high-quality generators with a particular focus on durability and efficiency. Their models are perfect for industrial and agricultural applications thanks to their robustness and ability to generate large amounts of energy.
• GeoTech and GeoTech PRO generators: GeoTech is a renowned brand for the production of versatile and innovative power generators. The GeoTech PRO line offers advanced models suitable for both domestic and professional use, always guaranteeing high performance and reliability.
• Tecnogen electric generators: Tecnogen manufactures high-quality generators that are ideal for professional use. Their models are known for their robustness, efficiency, and ability to provide direct current even in difficult conditions.

Buying a power generator on AgriEuro offers numerous advantages, guaranteeing quality, efficiency and reliability. The main reasons why it is worth choosing AgriEuro include:

• Fast and free shipping: AgriEuro's logistics ensure fast shipping at no additional cost, allowing you to receive your generator directly at home or at your business in a short time.
• Spare parts always available: At AgriEuro, you can easily order spare parts, ensuring the maintenance and long life of your generator. This service is essential for keeping your generator in optimal condition and ensuring its efficiency over time.
• Attentive and personalised after-sales service: AgriEuro offers dedicated customer support ready to answer any questions or needs related to the purchase and use of power generators. AgriEuro's after-sales service is designed to provide personalised service, helping customers resolve any issues and get the most out of their generator.

These reasons make AgriEuro the ideal partner for purchasing power generators, offering not only high-quality products but also a comprehensive service that is attentive to customer needs. Discover all the power generator models available on AgriEuro and choose the one that best suits your needs. AgriEuro is the right choice to ensure a direct current and reliable power supply.

• Power generator: A device that converts mechanical energy into electrical energy. It can be powered by various types of fuel such as petrol, diesel or natural gas. Power generators are commonly used to provide electricity in emergency situations or in areas where there is no connection to the mains electricity supply. They are often portable and used for small-scale applications.
• Generator set: This is a complete system that includes a power generator and an engine that provides the necessary mechanical energy. The engine can be powered by fuels such as diesel or gas. Generator sets are used for larger applications and can power entire buildings or industrial installations. They are often permanently installed and used as a backup power source.

In summary, while the power generator is a single component, the generator set is a complete system that includes a generator and an engine.

There are various types of power generators, each designed to meet specific needs:

• Portable generators: These are small, lightweight and easy to transport. Ideal for camping, outdoor events and small household tasks. They run on petrol or gas.
• Fixed generators: Permanently installed in a fixed location. Used as a backup power source for homes, businesses, and hospitals. Powered by diesel or gas.
• Inverter generators: Produce stable, high-quality electricity. Suitable for powering sensitive devices such as computers and electronic equipment. They are quiet and fuel-efficient.
• Industrial generators: Designed for large-scale applications. Powered by diesel or gas, they can provide continuous power for long periods.

A power generator works through a process that converts mechanical energy into electrical energy. Here are the main steps:

• Engine: The generator has an engine that runs on petrol, diesel, natural gas or other fuel. This engine provides the mechanical energy needed to operate the generator.
• Alternator: The mechanical energy is transferred to an alternator. The alternator contains a rotor that rotates inside a stator. The rotation of the rotor creates a variable magnetic field that induces an electric current in the stator windings.
• Voltage regulator: Controls the output voltage of the generator to keep it constant and suitable for use. This component is essential to ensure that the current produced is stable and safe for the connected appliances.
• Cooling and discharge system: Keeps the engine and alternator at safe operating temperatures. The discharge system removes the gas produced by fuel combustion.
• Fuel tank: Supplies the fuel needed by the engine. The capacity of the tank determines the generator's autonomy.

To choose a power generator that suits your needs, it is important to consider several factors:

• Power required: Determine the total load of the appliances you want to power. Calculate the power required in watts and choose a generator that can provide at least 20% more than the calculated power.
• Fuel type: Choose between petrol, diesel, natural gas or solar power based on availability, cost and personal preference. Diesel generators are more efficient and durable, while petrol generators are cheaper and easier to find.
• Portability: Decide whether you need a portable or stationary generator. Portable generators are ideal for outdoor activities, while stationary generators are more suitable as backup power sources.
• Inverter: If you need to power sensitive electronic devices, consider an inverter generator that produces stable and clean electricity.
• Noise: Check the noise emission of the generator, especially if it is to be used in residential or quiet areas. Choose quiet models or those with noise reduction systems.
• Budget: Consider the initial cost of the generator, fuel costs and maintenance. Choose a model that offers a good balance between quality and price.

The cost of producing electricity with a generator depends on several factors, including the type of fuel used, the efficiency of the generator, and the price of fuel. Here is an overview of the main cost elements:

• Fuel cost: The type of fuel significantly affects costs. For example, diesel is generally cheaper than petrol, but diesel generators tend to be more efficient. Natural gas is a cheaper option but requires a connection to the gas network.
• Generator efficiency: Generators have different efficiencies measured in kilowatt hours (kWh) produced per litre or gallon of fuel. More efficient generators produce more energy per unit of fuel, reducing overall costs.
• Maintenance: Maintenance costs vary depending on the type of generator. Diesel generators require less maintenance than petrol generators, but repairs can be more expensive.
• Generator cost: The initial purchase price can vary considerably. Portable petrol generators can cost a few hundred pounds, while industrial generator sets can cost thousands of pounds.
• Fuel life: The amount of energy produced per unit of fuel affects costs. For example, a generator that consumes 1 litre of fuel to produce 2 kWh is more expensive to operate than one that produces 3 kWh per litre.

For a concrete example, let's assume a petrol generator with an efficiency of 2 kWh per litre and a fuel price of £1.50 per litre. The cost per kWh would be approximately £0.75. However, this may vary depending on specific conditions and the efficiency of the generator.

The lifespan of a power generator depends on several factors, including the type of generator, the quality of the components, maintenance and use. Here is an overview of the main factors that influence lifespan:

• Type of generator: Diesel generators tend to last longer than petrol generators. A well-maintained diesel generator can last up to 30,000 operating hours, while a petrol generator can last between 1,000 and 5,000 hours.
• Component quality: Generators built with high-quality components and durable materials have a longer lifespan. The quality of construction directly affects longevity.
• Maintenance: Regular and proper maintenance can significantly extend the life of a generator. This includes changing the oil, cleaning the air filters, checking the spark plugs and checking the cooling system.
• Use: Intensive or continuous use of a generator can reduce its lifespan. Generators used for emergency applications with less frequent use tend to last longer than those used on a daily basis.
• Operating conditions: The environment in which the generator operates can affect its lifespan. Dust, high humidity, or extreme temperatures can cause components to wear out more quickly.

In general, with proper maintenance and appropriate use, a power generator can last for many years. It is important to follow the manufacturer's recommendations for maintenance and operation.

The continuous operating time of a power generator depends on the type of generator, the capacity of the fuel tank, and the operating conditions. Here are the main factors to consider:

• Tank capacity: Generators with larger fuel tanks can run for longer periods without refuelling. For example, a generator with a 20-litre tank can run for approximately 10-15 hours, depending on fuel consumption.
• Generator type: Diesel generators tend to have a longer running time than petrol generators. Inverter models, known for their efficiency, can also extend running time.
• Applied load: Running time is affected by the applied load. A generator operating at 50% of its rated capacity consumes less fuel and can run longer than one operating at maximum load.
• Fuel efficiency: More efficient generators consume less fuel per hour of operation, extending continuous operating time.
• Operating conditions: Favourable environmental conditions such as moderate temperatures and low humidity can contribute to longer operating life.

A generator can therefore run continuously for several hours, but it is important to monitor the fuel level and ensure proper maintenance to prevent damage and malfunction.

To power a home, you need to choose a food-grade generator with sufficient power to support all essential electrical appliances. Here's how to determine the right generator:

• Calculate the total load: Add up the wattage of all the electrical appliances you intend to power. This includes appliances, lights, heating or cooling systems, and electronic devices. It is important to consider both the continuous load and the start-up peaks.
• Backup generator: For emergency use, a generator with a capacity of 5,000 to 7,500 watts may be sufficient to power essential devices such as your refrigerator, lights, water pump, and some appliances.
• Stationary generator: If you want a permanent solution, a stationary generator with a capacity of 10,000 to 20,000 watts can provide enough power for your entire home, including all appliances and HVAC systems.
• Fuel type: Choose between petrol, diesel or natural gas. Natural gas generators are ideal for permanent installations as they can be connected directly to the gas network, eliminating the need for frequent refuelling.
• Inverter: If you need to power sensitive electronic devices, consider an inverter generator that produces stable, clean electricity.
• Professional installation: For stationary generators, professional installation is recommended to ensure that the system is connected correctly and safely to your home's electrical panel.

Choosing the right generator depends on your specific needs and available budget. An accurate assessment of the electrical load and fuel preferences will help you select the most suitable generator.

The hourly consumption of a power generator varies depending on several factors, including the type of generator, the fuel used, the power output and the efficiency of the engine. Here is a detailed overview:

• Fuel type: Petrol, diesel and natural gas generators have different consumption rates. In general, diesel generators are more efficient than petrol generators, consuming less fuel for the same amount of energy produced.
• Power output: A generator operating at full load consumes more fuel than one operating at half load. For example, a 5 kW generator could consume about 1-1.5 litres of petrol per hour at full load, while at half load, consumption would drop to about 0.5-0.75 litres per hour.
• Engine efficiency: Generators with more efficient engines consume less fuel. Newer, higher-quality models tend to have more efficient engines than older or cheaper ones.
• Operating conditions: Extreme temperatures, high altitudes and inadequate maintenance can increase fuel consumption. A well-maintained engine in good operating condition consumes less fuel.

For example, a 5 kW petrol generator can consume:

• 1-1.5 litres per hour at full load.
• 0.5-0.75 litres per hour at half load.

Diesel generators, on the other hand, may consume:

• 0.8-1.2 litres per hour at full load.
• 0.4-0.6 litres per hour at half load.

The petrol consumption of a 3 kW generator depends on the load applied and the efficiency of the engine. Here is an estimate based on a typical generator:

• At full load: A 3 kW generator operating at full load generally consumes around 0.9-1.2 litres of petrol per hour. This consumption may vary slightly depending on the quality of the generator and the operating conditions.
• At half load: When operating at half load, consumption drops to around 0.45-0.6 litres per hour. Operating a generator at lower loads is more efficient and consumes less fuel per hour.
• Engine efficiency: Generators with more modern and efficient petrol engines consume less petrol than older or less efficient models. Regular maintenance of the generator helps to maintain efficiency and reduce fuel consumption.

In general, petrol consumption can vary depending on several factors, but a well-maintained 3 kW generator operating under optimal conditions should fall within these consumption estimates.

The power required for a generator depends on the specific needs of use. Here's how to determine the appropriate power:

• Calculate the total load: Add up the wattage of all the appliances and devices you intend to power. It is important to consider both the continuous load and the start-up peaks, as some devices require more power when they are turned on.
• Essential devices: Identify the essential devices that must be powered in the event of a power outage. This could include refrigerators, lights, water pumps, heating or cooling systems, and medical devices.
• Continuous and peak power: Choose a generator that can provide sufficient continuous power for the total load and has a higher peak capacity to handle start-up loads.
• Types of use: For domestic use, a generator with a power output of between 5,000 and 7,500 watts may be sufficient to power essential devices. For commercial or industrial applications, a generator with a higher power output of 10,000 to 20,000 watts or more may be required.
• Safety factor: Add a safety margin of 20-25% to the calculated power to ensure that the generator can handle any load variations and prevent overload.

• kW (kilowatt): This is the unit of measurement for real power, which represents the actual amount of work done or energy transferred per unit of time. Kilowatts measure the actual power used by electrical devices. It is a measure of active power.
• kVA (kilovolt-ampere): This is the unit of measurement for apparent power, which includes both real power (kW) and reactive power. Apparent power takes into account losses due to factors such as inductance and capacitance in electrical circuits. It is a measure of the total power required regardless of the efficiency of the system.
• Power factor (PF): This is the ratio of real power to apparent power expressed as a decimal value or a percentage. A power factor of 1 (or 100%) indicates that all apparent power is used as real power. The formula is: kW=kVA×PF

In generators , kVA is often used to specify the total capacity, while kW indicates the actual working capacity. A 100 kVA generator with a power factor of 0.8 provides 80 kW of real power.

The main difference between kW and kVA is that kW measures the actual power used, while kVA measures the total power required, including power loss. Understanding these units is essential for correctly sizing generators and other electrical equipment.