Why buy a Diesel Generator?
Diesel generators are more reliable. The easiest way for me to explain it is this. Diesel fuel is basically a light-grade oil. Inside any internal combustion engine, there are many moving parts that create friction. Gasoline and propane are solvent-based fuels which promote friction and wear. Diesel, being a lubricant, reduces friction and wear. If you ever need to do work on a Diesel engine, they are simple. All you need to make a Diesel run is air-compression and fuel. Diesels don’t need sophisticated (and failure-prone) ignition systems; no spark plugs, no points and no carburetor!
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How long will a Diesel Generator last?
With proper maintenance, a high-quality Diesel Generator will last indefinitely. It is important to change the oil regularly and keep the air filter clean. Clean fuel is extremely important.
What about the generator end. How long will it last?
Although it is often referred to as a generator or alternator, we only use brushless alternators. The beauty of a brushless alternator is that it only has one wear item – a sealed ball-bearing that is rated for 100,000 hours.
Do you offer tools or assistance sizing a generator for my needs?
Absolutely, Hardy offers generator sizing, power calculators and conversion tools for estimating in addition to providing general input on your generator sizing and product selections. However, nothing can replace an on-site visit by a local licensed electrical contractor to help understand your power needs, voltage requirements, installation, distances, wire size, voltage drop, elevation, and more.
What about RPM Diesel Generators. Why are they cheaper?
RPM Diesel Generators are sometimes referred to as portable or throw-away Diesel Generators. They get their power from speed rather than displacement. For that reason, they weigh less than half of an RPM Diesel Engine. The alternator on a RPM Diesel generator spins twice as fast so it can get by with less than half of the copper of an RPM alternator. Due to the higher engine speed, these RPM generators wear out much sooner.
Can I run my Diesel Generator on biodiesel or other alternative fuels?
Yes, a Diesel Generator will run on almost any type of oil. They will run on anything from used motor oil, vegetable oil, refined biodiesel, you name it. Now, should you run your Diesel Generator on any oil-based substance it will run on? If it’s an emergency and this is the only fuel, yes. However, make sure it is clean and has been processed properly to ensure it does not harm your engine, injectors, or filtration system. If it is not an emergency, select your diesel fuel alternatives carefully.
Why should I buy my Diesel Generator from Hardy Diesel?
We have been selling quality Diesel Generators wholesale direct since . We have learned a lot during this period of time. Some things can be learned in books. Competing successfully in the wholesale generator business is not one of those things. During the last 40+ years, we have seen a lot of mail-order and online Diesel Generator companies come and go, and when they fail, they leave a trail of unhappy customers in their wake. What differentiates Hardy Diesel from our competitors is that we provide well-engineered, high-quality systems at a reasonable price.
How do we manage to provide superior products at such affordable prices?
Hardy Diesel is privately owned, U.S. based company and we continue to do business as we did when we started in . We have no fancy showroom and pay no rent. Another advantage: no one at Hardy has ever figured out how to wear more than one pair of pants at a time! Low overhead is the key.
Does Hardy Diesel sell generator sets made with engines or generators from China or India?
No, although we have nothing against these countries or the people who live and work there, we do not use their products in our systems. Trust us, we have tried all of them and there are many problems associated with diesel engines and generator sets from those nations. Sure, the price is attractive and they’ve found ways to skirt around U.S. environmental laws, but in the final analysis, it’s just not worth the risk to your business, family, livestock, or home. Do yourself a favor and don’t support the companies who pedal this gear; they care so little about the safety and satisfaction of their customers and they give our industry a bad name!
Why do some companies advertise slow diesel generators with RPM alternators on them?
RPM alternators are very cheap to buy. With belt-drive, you can slow an engine down below RPM and speed up a generator to RPM and still get 60Hz. We don’t resort to short-cuts like this. Belt-drive, in itself, is okay if properly tensioned, however, we would never couple a slow diesel to a RPM alternator because they are capacitor-regulated and often fail. Two-pole or RPM alternators are sometimes referred to as “throw-aways” because when they fail, they are simply not worth rebuilding. Capacitor-regulated alternators also have a very low motor-starting ability. We recommend you avoid these types of Diesel Generator Sets and the companies who sell them.
Can you explain kilowatts (kW) as it relate to diesel generators?
Diesel generator kW (k= W= Watt) is typically produced at lower RPMs. Example 8kW = Watts. It takes 1.5 horsepower to make one kW. Turning at a slow RPM a Diesel Generator kW requires large displacement. Most gas and even some Diesel Generators run at RPM. These are considered high speed throw away generators. The initial cost on these are low, however, they ware out quickly and are not worth fixing. We only sell Diesel Generators that run at RPM. Diesel generator kW produced from RPM engines and generators last almost indefinitely. That is why they are sometimes referred to as investment grade.
Here are five key considerations you should focus on when Buying diesel generator – 5 tips:
The most important thing to consider when sizing a generator is the high inrush currents associated with starting electric motor. This is typically six times the full load current. However, inrush currents for the type of high-efficiency motors being specified today can be almost double that amount.
This approach often resulting in over sizing the generators. The motor running load and not based on the actual needs of the application. Moreover, it disregards other key factors that play a key role in sizing the generators. For instance, harmonics caused by variable frequency drives and sequential starting of motors.
Thankfully help is at hand. Many generators can now be equipped with solutions to overcome the extra systems required in the alternator.
Permanent magnet or auxiliary winding. Both provide the generator with three times their nominal current to cover inrush peaks. From the electrical motor, for a minimum duration of ten seconds, via a residua excitation current.
In certain cases, even more, advanced options are available. For instance, some generators feature a digital automatic voltage regulator (D-AVR). This type of voltage controller allows operators to downsize the generator requirement..
Contact us to discuss your requirements of High Voltage Diesel Generator Solutions. Our experienced sales team can help you identify the options that best suit your needs.
Another option could be to use a system that closes the breaker just when the engine starts to run. This enables the excitation to increase gradually as the speed of the engine does. Allowing for very soft start of loads connected to the generator.
This is especially useful for the magnetising step-up transformers in installations where a medium voltage is required.
It is no longer necessary to buy larger generators than needed to cope with the initial electrical surge upon starting. What’s more, with smart control of the generator’s voltage, it is possible to achieve lower fuel consumption. And reduced maintenance cost and longer lifetimes.
Even if starting off with just one unit, it’s worth asking the equipment manufacturer what steps can be taken. Generators can be parallel a single generator with others to form a modular power plant set up. Also, how long would it take to pair two units? With many generators, this process can take under 10 minutes, but not all offer this capability.
When coordinated by a network of controllers, plug-and-play generators can power up and down according to the on-site power requirements at any given time. For example, only one or two may be operational during periods of low load, thereby boosting fuel efficiency. Equally, all units may become active in periods of high demand.
There are a number of additional benefits from modular capability. It isn’t necessary to stop the entire power delivery during essential maintenance operations.
The ideal control system should offer a variety of features. For instance, the ability to remotely start and program the machine. You can set the display warnings, for instance, low fuel and other performance issues. This helps to better utilise the efficiency of the power plant. While providing a valuable overview of the application process.
Many generators are now equipped with Power Management Systems (PMS). What makes them ideally suited for rental applications is the plug-and-play design that allows for easy and rapid configuration. PMS provides the means to optimise the fuel consumption and performance of generators in parallel with load demand. Starting and stopping units with a corresponding increase or decrease of the load. It also helps avoid engine damage to generators from running with low load levels, thereby increasing their useful work life.
Mobile generators now consume much less fuel than was possible five years ago. The fact that the latest equipment can run for longer and more economically. Has been a big driver behind the market’s growth. However, not all generators are the same and fuel can be expensive.
Furthermore, modularity also contributes to fuel efficiency. For example, taking the demand patterns of a typical industrial application as a guide. The deployment of a 1 MVA generator as a prime power source can use up to 1.677 litres of fuel being consumed a day. That compares with approximately 1.558 litres of fuel if three 325 kVA generators were doing the same job.
The options for fuelling generators are expanding nowadays and now include biogas and natural gas. Market is emerging, and it is important to discuss these technologies with a manufacturer. Before investing in a new generator.
When using multiple generators, it’s also worth considering if units can be stacked on top of each other for minimum footprint and access considerations.
These factors have a bearing on total operating expenses and efforts to reduce carbon costs.
Consider all the foregoing factors that affect the choice of appropriate sizing. If in doubt, a simple rule for estimating motor starting: For instance, 1 kW of generator set rating per ¾ to 1 hp specified on the motor.
The more accurate the sizing is to the application, the better the results.
It will pay to think modular because bigger is not necessarily better. Modular is not just about large installations. It can make a lot of sense with units around the 150-kVA level as well.
Article from: https://www.redstarequipment.com.au//05/5-tips-for-buying-a-diesel-generator/
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