Once the output reaches 250kVA, generators will usually be classed as industrial sets suitable for agricultural, manufacturing, and heavy industrial applications.
Prime describes a generator that acts as the primary power source for an application without using the grid and can be run 24/7 at near to their maximum load. A standby generator acts as a backup power source in the event of a power cut.
Generator load bank testing uses a piece of electrical test equipment to simulate full and stable load conditions on to a generator to prove its performance ability.
In order to prepare for emergency outage scenarios and to avoid a phenomenon known at 'wet stacking', it is advisable to load bank test your generator at least once a year. Find out more about load bank testing here.
When a generator is run below its operating temperature, has been unused for a long period of time or is operated at less than 60% of its rated load the unburnt fuel, carbon and moisture can gather around the exhaust system causing a thick, oily substance to accumulate.
As a general rule, it is suggested that you change the oil before every 100 hours of use to keep the lubrication system working smoothly and prevent the engine from seizing up.
Changing the oil filters will help to extract soot and metal contaminants from the oil.
Diesel engines require a clean air supply for combustion. When air filters become blocked with debris the airflow is significantly restricted, causing reductions in engine power, lower engine lifespan and increased fuel consumption.
There are a number of ways to preserve the quality of your stored diesel. These include: adding antioxidants and stabilisers, using additives and separator filters, topping off the tank and storing the fuel in a cool, dry area. To find out more read our article here.
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Power factor is the ratio of working power to apparent power. Power factor = working power (kW) over apparent power (kVA).
Generators are typically rated at a power factor of 0.8.
Working power is the actual power consumed or utilised in an alternating current (AC) circuit and is measured in Watts.
Reactive power (VAR) is the energy which returns to source in each complete cycle of the AC waveform. This power does not perform work but is essential for providing the voltage levels necessary for working power to be useful.
Apparent power (kVA) Is the combination of working power and reactive power. A generator must be rated accordingly to carry the sum of both the waste energy and that which does the work.
A generator does require a battery. Batteries are the most critical, but often forgotten, part of a diesel genset. Without a battery your backup power source will not even turn on and will be unable to provide the electricity you need at critical times. Read more about batteries here
It is essentially an electromechanical device that generates alternating current (AC) electricity. The primary purpose of an alternator is to provide a steady and reliable source of electrical power for various applications. Read more about how an alternator works within a generator in our news article: What Is An Alternator?
Load sharing involves the proportional distribution of electrical load among multiple generators operating in parallel. It ensures that each generator contributes its fair share of power to the overall demand, promoting stability, efficiency, and reliability in the system. Learn more in our latest blog post: What is load sharing?