Power Generation Services for Commercial Buildings

Most buildings require one or more services offered by a commercial power solution provider, especially if they contain a backup generator system (a.k.a. Genset). Electricity generation systems need scheduled maintenance and testing, occasional upgrades to improve efficiency, and safety inspections. If you have recently implemented a backup generator, or are considering implementing one, it is important to be familiar with the services offered by commercial power solution providers. Below are seven power generation services that are commonly needed in commercial buildings.

Scheduled maintenance
There are several types of scheduled maintenance, including maintenance for transfer switches, switchgear, and generators. Performed monthly, scheduled maintenance is one of the most critical power generation services, and should always be performed by an expert in commercial electrical systems.

Arc Flash Analysis
Arc flash analysis is a critical safety practice that reduces the likelihood of arc flashes that could lead to fires, injuries, and even fatalities. Arc flash analysis should comply with the guidelines of National Fire Protection Association (NFPA) Code 70E.

Load bank testing
In a load bank test, a Genset is tested using a portable load bank that delivers a load to the Genset. A load bank test is performed on generators that fail to operate at a minimum of 30% of their nameplate Kilowatt rating for at least thirty minutes during monthly tests. Guidelines for load bank testing are contained in the NFPA 110.

Breaker testing
Testing a building's breakers is a critical safety practice that helps to protect equipment and workers from dangerous arc events. In the absence of breaker testing, the first sign that a breaker needs replacement or repair could be an ejected arc flash that causes electrocution and fire.

Modernization and retrofits
Modernization and retrofit measures can improve the technology of existing generators, extending their lifespan. Modernization measures and retrofits can add several years to a generator's life-a valuable option considering the price of a new industrial Genset.

Generator rental
Generator rentals are useful in the following situations, among others: when an existing Genset is down for repairs or upgrades, when an existing generator is being replaced, or when a building project requires more electricity than can be provided by a building's electrical system. If you need to rent a generator, calling a generator service provider is the best option.

Infrared scanning
Infrared scanning is a preventative maintenance measure that identifies abnormal heating patterns in electrical components, patterns that could signify a serious problem in its infancy. Often, an entire facility can be scanned in a single day, and some repairs can be made on the spot. Infrared scanning should be performed annually, and can lead to significant cost savings by identifying problems early.

What services does your building need?

Different buildings need different power generation services. If you have recently purchased a building, the best way to determine its service needs is to contact a commercial power solution provider, and schedule an appointment with a technician. With the right services performed on the right schedule, electrical equipment can remain safe and free of unexpected problems.

NFPA 110 Generator Testing: An Overview

The National Fire Protection Association (NFPA) creates minimum standards for fire safety, egress safety, and other types of safety in commercial buildings. Included in the NFPA's safety standards is a code for testing and maintaining emergency power supply systems (EPSS): NFPA 110. If your building contains a generator, practicing the code can ensure that it performs as expected during a power outage. Below are the basic testing requirements for industrial generators according to NFPA 110. For a full list of requirements, building managers should contact the NFPA, or a commercial power solutions provider.

NFPAtesting for industrial generators
If a building is required to have a Level 1 or Level 2 generator, the following types of NFPA 110 generator testing should be performed in preparation for a power outage. Experts trained in EPSS technology should carry out these tests.

Section 8.4.2
An EPSS must be exercised under load once a month for at least thirty minutes. The test should be conducted using one of the following two methods:  

• Loading that achieves a minimum temperature for exhaust gas based on the manufacturer's recommendations.
• Under normal operating temperature while running at a minimum of 30% of the nameplate Kilowatt rating.

For generators that cannot operate until their water pressure and oil pressure have stabilized, the tests above should be terminated before the thirty minutes expire. This reduces the time a generator is unavailable for operation.

Section 8.2.4.3
Diesel powered generators that do not meet the requirements set forth in Section 8.4.2 should be exercised monthly for at least thirty minutes using the available EPSS load, and yearly for two hours using a supplied load. For yearly tests, the two hours should be broken down as follows:

• 30 minutes at 25% of the nameplate Kilowatt rating.
• 30 minutes at 50% of the nameplate Kilowatt rating.
• 60 minutes at 75% of the nameplate Kilowatt rating.

A load bank can provide the "supplied load" required for tests under Section 8.2.4.3. Load banks, as well as diesel-powered generators, are available for short-term and long-term rental from commercial power solution providers.

The scope and benefits of NFPA EPSS testing

The requirements above are not a complete list of NFPA 110 generator testing requirements. To determine the necessary maintenance measures and tests needed for your unique generator, consult the code in its entirety. By following its requirements, the following benefits can be realized:

• Improved reliability of emergency backup lighting.
• Reduced possibility of electricity interruption in critical facilities.
• Reduced layover time in break before make generators.
• Improved emergency power generation capacity.

Implementing an EPSS is the first step toward powering your building in the event of a power outage, and regular maintenance and tests are needed to ensure its function. To have monthly and annual tests performed; building managers should consult commercial power solution providers. Other services provided by commercial power solutions providers include: retrofitting and modernization measures, new installations, infrared scanning, breaker tests, arc flash analysis and training, healthcare utility management, generator rentals, scheduled maintenance, and repairs.