resistive vs reactive – reasons to choose reactive load bank testing solutions
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Resistive vs Reactive -- Reasons to Choose Reactive
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• What is a Load Bank? • A self-contained electrical device that accurately mimics the behavior of the electrical system’s actual
load
• Why Conduct a Load Test?• Simulates real-world scenarios • Validates performance of electrical and mechanical systems• Uncovers problems in a controlled situation
• What Industries Use Load Testing?• Commercial Power/Utilities, including substations, solar, wind,
nuclear and onsite generation• Maritime• Data Center• Government/Military• Oil & Gas• Hospitals/Healthcare
Load Bank Primer
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• Resistive
• Reactive• Reactive/Inductive• Reactive/Capacitive
• Resistive/Reactive
Types of Load Bank Testing Solutions
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Types of Load Bank Testing Solutions
Resistive Load• Converts electrical energy (current)
into heat using power resistor
• Dissipates the heat using air or water
• Examples include incandescent lightbulbs, space heaters and hot plates
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Types of Load Bank Testing Solutions
Reactive Load• Simulates systems affected by electric motors or other
electromagnetic devices
• Equipment requiring reactive power compensation includes motor-driven devices, transformers and capacitors
• Reactive/Inductive loads monitor lagging power factor• Device examples include motors, transformers and
chokes• Routinely used in National Security Agency (NSA), wind
farm, solar and off-shore maritime applications
• Reactive/Capacitive loads monitor leading power factor• A capacitive load charges and releases energy• Routinely used in solar facilities, manufacturing and
mining applications
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Types of Load Bank Testing Solutions
Resistive/Reactive Load• Mimics motor loads and electromagnetic devices
within a power system
• Also provides purely resistive loads by allowing to set a specific power factor
• Enables comprehensive testing from a single unit
• Used for testing turbines, switchgear, rotary UPS, generators and UPS systems
• Used for integrated system testing of utility substation protection systems
• Often required to test solar inverters
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Drawbacks of Resistive-Only Load Testing
• Only tests certain components of a system rather than the entire system
• Resistive loads comprise only a small part of a facility’s total power consumption• Incandescent lights and electric heaters are typically the only equipment operating on a
resistive load• This equipment does not draw large loads that realistically test performance
• Resistive-only testing fails to mimic real-world conditions
• Cannot simulate how a facility’s equipment will operate under actual conditions
• System-wide testing is the only way to know whether the individual components in the system will work together
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Making the Case for Reactive Load Bank Solutions
• Simulates systems affected by electric motors or other electromagnetic devices on a power network
• Resistive/reactive combination load banks test the entire system
• Creates the conditions experienced during a real power failure
• Uncovers weaknesses in a power generation system
• Predicts pending failures of multiple components making up the entire system
• Ensures the system operates at an acceptable level during an emergency
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Contact Us
• A global leader in load bank rentals and service • More than 30,000 load tests performed • A 99.99% on-site performance rate• Unmatched level of service, expertise and experience • Provides a consultative approach to every commissioning and testing project
For a complimentary consultation, contact ComRent at 888-881-7118.Visit our website for more information on load bank testing.