The purpose of most generator sets is to provide a trustworthy source of power for your facility or business during an emergency situation when the power is out or not available for some reason. In the event of a power failure, there should be no doubt that your backup power source will kick into action and get you back up and running.  But what happens when the power goes out and your genset does not operate the way it is supposed to? The results can often be costly and sometimes disastrous.

This is the reason why  generator load bank testing should be a crucial part of your generator maintenance plan — and this testing should ideally be done each and every year.  Load bank testing ensures that your generator will be:

• dependable and operational when the power is needed
• capable of generating the highest possible load required at any crucial point or time

What is Load Bank Testing?
A generator load bank test involves an inspection and evaluation of a generator set.  It makes sure that all primary components of the generator set are in proper working order. To conduct a load bank test,  artificial loads are put on the generator by bringing the engine to the recommended operating temperature and pressure levels. This is especially important for  emergency generator sets that do not run very often and may not be exposed to carrying heavy loads on a regular basis.  The general rule is if your generator is not exposed to more than 30% of its rated kilowatt load, you should have the generator load tested.

A load bank test ensures that your generator will run when needed so that you can count on it producing  power during any kind of emergency that may arise.  A proper load bank test will give you an evaluation of your generator at its full kilowatt output rating.  Many generators don’t regularly operate at their full kilowatt rating.  It’s very important that the generator produce the horsepower that’s required for it to run flawlessly when that power is needed, while maintaining the right temperature and pressure levels and allowing  it to run for long periods of time.

What is Done During a Load Bank Test?
When a load bank test is started, an artificial load is placed on the generator. The test is timed and the  kilowatt load is  gradually increased in  specified increments.  Every time the load is increased, critical engine functions are measured at the highest possible levels for a sustained period of time. To complete the test, a load bank is needed (a machine with kilowatt rated sizes and battery type cables).

Wet-Stacking
When a diesel powered generator is not used very often or is only run on light loads, it can experience unburned fuel and soot buildup in the exhaust system. This is called “wet-stacking.”  Wet-stacking usually  happens when the genset is not performing the way it’s supposed to.  This may lead to damage or become a fire hazard and can even lead to the generator not working at all.  During a load bank test, the generator is run at full operating power and temperature. This will cause any wet-stacking to burn off.   Load bank testing actually serves two main purposes:

1. It tests the generator to determine if functions properly and efficiently when needed.
2. It removes any built-up carbon within the generator.

 Advantages of Load Bank Testing
There are many reasons why  gensets should undergo a load bank test on an annual basis, including:

• Confirming the gensets output capabilities as opposed to just starting it up on occasion.
• Finding problems now, instead of when an emergency arises, can be a major cost savings and prevent future breakdowns.
• Helps to avoid wet-stacking and cleans out any carbon deposits.
• Confirms that the engine cooling system will work efficiently  under load.
• Makes sure that the genset will work properly when  needed.

Load bank reports should  include:

•Kilowatt Load
• AC Voltage
• Hertz
• Oil Pressure
• Amperage Rating
• Voltage Tested
• Any Additional Concerns or comments

If you have questions about generator maintenance or load bank testing,  contact CD & Power today at 1-866-468-7697 and let us help you keep your generator running in tip top condition.  A winning combination of an empowered team that loves what they do, working towards one goal.  We are CD & Power, “Powering Your Success” for 30 years and for many more to come.

Only a few years ago, traditional logic for generator sets (gensets) held that:

• Diesel generators = reliable and inexpensive but also noisy, loud and messy.
• Natural gas generators = expensive and temperamental but also quieter and cleaner.

Diesel fuel is the traditional choice for commercial and industrial standby power, but is by no means the only choice.  In the past, gaseous fuels have been avoided in industrial applications based upon cost, power density and perception of durability and fuel reliability.  That is no longer the case. Today, thanks to the development of new technologies in engines, enclosures and other components, the differences between diesel and natural gas generators is no longer so clearly defined.

Natural Gas Generators
An efficient means of power generation is by using a natural gas generator. It can be used to power  emergency and portable generators and is considered to be one of the least expensive and one of the most adequate forms of fuels among the fossil fuel family for generating power.  In terms of price, coal is the only fuel that is less expensive. One of the biggest draw backs of using coal is that it’s a very dirty source of fuel.

Natural gas is typically acquired by drilling, the same process as is done for oil.  Natural gas in liquid form is taken to various holding facilities where it is converted into its gas state. Then, is made available through pipelines and it can also be purchased in cylinders.

A natural gas generator works pretty much the same as other generators.  Usually the only  difference between generators is the fuel used to power them. In this instance,  the source of fuel to start the generator is natural gas. These types of  generators are predominately used in large metropolitan areas where fuel supply is available through a  pipeline fuel delivery system.

Advantages of Using Natural Gas 

• The most favorable uses of  natural gas as a fuel is that it is a cleaner energy source, less expensive than other fossil fuels, and is substantially efficient.
• Comparing natural gas to oil and coal, the amounts of sulfur, nitrogen, and carbon dioxide (a greenhouse gas) are considerably lower. Making natural gas one of the cleanest fossil fuels to burn.
• Natural gas does not produce a strong odor, which is common with generators powered by oil or diesel fuels.
• Natural gas generators are  effective in reducing costs when used to power homes because electricity from utility companies tends to be more expensive.
• Aside from being cleaner burning  and cheaper to buy, natural gas is also handy in large cities because  it is delivered directly through underground pipelines to the source where it is needed. For this reason, when using natural gas powered generators, there is no need in having  fuel storage tanks.

Aside from its evident advantages, natural gas generators also have some negatives to them.

Disadvantages of Using Natural Gas

• One of its advantages can also be regarded as a disadvantage.  Since natural gas does not need to be stored, as it is usually  supplied through pipelines to the site of the business or company,  during times of a  disaster or accident, the flow of natural gas may be temporarily  interrupted. Finding yourself with a lack of fuel when you need power to operate your equipment during an  outage and when the regular  supply of electrical power is down, can be a major concern for keeping your business running, until that  power is restored.
• Natural gas can be extremely explosive and can be a grave fire hazard should something happen to the pipeline.

Compared to diesel generators, natural gas generators:

• Cost more to run.
• Discharge more greenhouse gases into the air.
• Also,  natural gas is a non-renewable fuel supply.

Diesel Generators
These kinds of generators can usually be divided into two primary parts: a diesel engine and an electrical generator.  Diesel generator sets  are mainly used to provide power to places that are not on a power utility grid or as a backup source in case there is some kind of  power outage or  failure.  Ships and large boats use diesel generators for all of their power and propulsion needs when they are on the water.

Diesel generators are  common for back-up emergency power. They are available in both single and three-phase, diesel generators can be used not only in medium to  large businesses,  but also for homes and small offices.

Advantages of Using Diesel
• Fuel efficiency: When it comes to making a  choice on which fuel to use, price is usually the number one factor. With the ever increasing demand and decreasing supply, when it comes to choosing which fuel to use, there will always be some kind of debate on why one is used over the other.  One of the most important keys is finding a fuel source that saves on both energy use and operating costs. Diesel generators score high on both of these points. While they are substantially more expensive than natural gas generators, also the price of diesel fuel is often more than gas, you can get a larger volume of energy out of diesel fuel. You may pay more for  diesel fuel, but the tradeoff is getting  more usable  power out of the diesel than you would for the same amount of any other gas. Fuel efficiency is the number one advantage for using a diesel generator.

• Stability: Another huge benefit for using a diesel generator is the guaranty of a stable power source. In large institutions, such as hospitals, this plays a huge role because most of the machines and devices used in them  require electrical  power to be on 24 hours a day, seven days a week and once the power goes out for some kind of stoppage or disaster, it  could mean the difference between life and death during a surgery or even keeping some kind of life-saving machine going until the main power comes back on.

• In comparing a natural gas powered generator, the diesel generator is far more efficient for several reasons such as:

• Diesel engines used today are far improved versions of older models that were extremely noisy and took a lot more time to maintain.
• Diesel engines are more heavy duty and dependable.
• Another advantage diesel has over natural gas engines is that they do not use spark plugs or wires; helping on repair and maintenance savings.
• The life expectancy of a natural gas engine is not as long as that of a diesel equivalent.
• Being less flammable than other types of fuels, diesel generators score high on being safer to use. They don’t use spark plugs or wires, which eliminates the chance of a spark causing a fire.

Disadvantages of Using Diesel
A diesel generator can be more expensive to purchase compared to other types.  But, since the upkeep of  a diesel generator can be quite a bit lower, it more than makes up for it after the generator is initially purchased.

Noise is a big issue with a diesel type of  generator. While newer models are getting quieter, the older versions can still be a bit  noisy.  Diesel generators that are used in and around  larger populations may also be too noisy for residents around the vicinity of these units.

Diesel generators are large and cumbersome and have large mechanical and electrical systems that are part of the unit. As opposed to smaller and lighter generators, diesel generators are usually not very portable and user friendly.

Given the recent trend of cleaner energy fuels and less greenhouse gases, diesel is  considered a major cause of heavy pollution in most major cities and towns where it is used.

When it comes time to choose between a diesel or a natural gas generator, you’ll need to answer a few important questions:

1. How will your generator be used (for main or emergency power)?
2. What kind of budget do you have for the purchase and maintenance required for your next generator?

Both natural gas and diesel generators have their advantages and disadvantages.  With the arrival of newly developed fuel sources, such as biodiesel, these new fuels are getting less harmful on the environment and air quality, more efficient in the way these new energy sources are burned to create the power needed, and saving you on the future costs of running/maintaining these new units.

If you would like help selecting the right generator for your next  job, feel free to contact us today at 1-866-468-7697 and we can help you choose a generator that fits your needs.  A winning combination of an empowered team that loves what they do, working towards one goal.  We are CD & Power, “Powering Your Success” for 30 years and for many more to come.

Finding the right generator to manage  your power needs is one of the top priorities in choosing a generator to rent or purchase. Whether it’s for primary or standby power, if your new generator can’t meet your specific needs, you should rethink it.  It can put a lot of  stress on the unit and  it can even damage the pieces of equipment that are connected to it. Determining exactly what size of generator to get can be a difficult task and involves a number of elements and considerations.

Making a choice, whether it’s a single phase, three phase, kW, KVA,  standby or motor starting generator can be overwhelming. This article will help you get an idea of how the sizing process works and some important things to consider before making an equipment purchase.  This article is not a substitute for the knowledge a certified electrician could give you, but it should give you a good start  and a better understanding of some of the key issues that are involved in determining the right power generator for you or your company’s needs.

Generator Sizes:  Generators are available in a wide range of sizes and configurations. Generators with power supply capacities of 5kW to 50kW are  available for personal and home use.  Industrial generators for businesses and large companies, are available  anywhere from 50kW to over 3 Megawatts.  Portable generators are available for homes, RVs and for small office spaces. Large businesses, call or computer processing  centers, power  plants, and other industrial applications need to use much greater sized industrial generators to meet their high power needs.

Power — What size Generator Do I Need?:  Many believe smaller generators can be used for standby electric power because they are only running when needed. This is a myth, not having the right power capacity  can actually be very damaging and harmful to the uneducated user. Unfortunately, under sizing of a generator is one of the most common mistakes made.  Not only does it involve the risks of damaging your new generator, but it can damage the equipment connected to it, create dangerous situations, and even limit overall use,  longevity and reliability of the generator for the business depending on it for power.

Finding the Starting and Running Wattage:  The right starting and running wattage of the equipment you intend to use with the generator is crucial for calculating the accurate amount of  power needed to keep everything running. Most of the time, there will be an identification plate on each piece, or you can  check the owner’s manual of each tool, appliance or electrical device.

 Converting Amperes to Watts:  You often find power requirements of tools stated in amperes. In order to convert the power requirement of a tool from ampere to watts, follow these calculations:

For resistive load: Wattage = amperes x volts

For reactive load: Wattage = (amperes x volts) x load factor

Power Requirement Charting: Many times, the owner’s manual or the power requirement specs of the tools and devices you’re running can not be found or are lost.  Starting and running wattages differ on each piece of equipment, and  each device has  its own consumption needs.   Questions regarding any particular item usually can be answered by contacting the manufacturer either by phone or even by going to the company’s website, consulting an electrician, using this sizing chart, or by contacting us and we will be glad to help you in any way we can.

Different ways of Calculating:  Depending on the type of equipment and the way the generator is going to be utilized, there are a few different ways of coming up with the  power requirements:

–  One motor running.

–  Multiple motors running at the same time.

–  No electric motors.

Benefits of selecting the right  generator: Now that you have some knowledge on how to choose the correct size of generator to suit you or your company’s needs, here are just a few of the advantages of  going through that process:

– No unexpected system downtime or failures.

– No shutdowns due to overload.

– Guaranteed to perform the way you want it to when you want it to.

– Less maintenance means more money savings on upkeep.

– Increased life of the generator.

– Higher amount of personal safety.

– A smaller chance of  damage to equipment and property.

Where to Buy, Rent Or Service Your Generator:  You are not only purchasing a major company asset, but most likely an item you will need to rely on for primary or emergency power at some point and time in the future, possibly in a crisis situation, deciding where to make that purchase is also a key consideration not to be overlooked.  The seller’s years of experience play a major part in choosing  who you are going to use in future for services and sales.

There are many definitions of “Great Service“.  At CD & Power we are committed to the following principles that we believe add up to providing “Great Service” to our customers:

1. We will always have a person answer the phone during office hours.  We believe it is impossible for a machine to understand your problem.
2. We will give you the option of taking a message or leaving a message on the person’s voicemail if they are not available.
3. We will take responsibility for our actions, both good and bad.
4. We will remember that your problems are our business.
5. We will give you the opportunity to take your comments, both good and bad, to a higher level.
6. We will be diligent in resolving your problem.
7. We will continually train our personnel.

There are numerous considerations to take into account when selecting the right generator for your next  job.  If you would like more suggestions and recommendations,  contact us today at 1-866-468-7697 and let us help you make the decision.  A winning combination of an empowered team that loves what they do, working towards one goal.  We are CD & Power, “Powering Your Success” for over 30 years and for many more to come.