Electrical Power Distribution Engineering Innovations, Solutions

By: National Switchgear  09-12-2011
Keywords: Engineering, Electronics, Circuit Breaker

Whether your need is greater reliability, increased capacity, higher ratings, or greater safety, National Switchgear can provide new products that meet or exceed today’s requirements. Our computer-aided engineering and custom fabrication deliver solutions with minimal installation time at a fraction of the cost. Custom solutions are our specialty, and we invite you to put us to the test.

Industrial Power System Studies Provide The Basis For:

  • Reduced Operating Cost
  • Improved Efficiency
  • Increased Availability
  • Increased Personal Safety
  • Improved Reliability

National Switchgear provides and delivers engineering studies to a broad range of industries including primary metals, pulp and paper, petrochemical, cement, electronics, water treatment and data processing centers. All of our services are designed to maximize power quality, improve system performance and reliability and increase personnel safety.

With their years of experience in the testing and maintenance of power systems, our team of expert engineers employs the popular SKM Power Tools and electrical engineering software enabling them to deliver engineering documents that you can have complete confidence in.

Ask us how an investment in engineering studies can maximize your system reliability and reduce the risk of serious injury.

Short Circuit Study

A short circuit study can help minimize the consequences of a power system fault.

Ratings for short circuit interruption equipment including breakers and fuses should exceed those calculated by the study in order to avoid more widespread effects. Short circuit calculations are also useful when meeting the National Electrical Code (NEC) requirement for capabilities in excess of duties imposed on the short circuit devices by the system.

National Switchgear’s study calculation procedures are in accordance with American National Standards Institute (ANSI) and IEC 60909.

Protective Device Coordination Study

A coordination study recommends settings for adjustable protective devices that minimize disturbances due to system faults. These devices include switchgear protective relays and circuit breaker trip devices, which provide automatic tripping during disturbances. Recommendations may also be made for revising the type of protective device that is applied.

The prime consideration of this study is to minimize the number of system components disconnected to remove a fault or abnormal condition, thereby permitting continued operation for the greatest possible remainder of the system.

Keywords: Circuit Breaker, Electronics, Engineering, Power System Studies, Protective Relays,

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Other products and services from National Switchgear


Electrical Bus Manufacturing, Bus Refurbishing, Copper Bus Bar Systems

An epoxy bus insulation provides excellent mechanical strength and durability and ensures optimum conductor protection, reducing the possibility of corona, arcing, and surface tracking. National Switchgear uses a fluidized bed epoxy insulation system for copper bus bar systems. National Switchgear uses an in-house bus fabrication using C110 copper bus bars.


Power Distribution Equipment Remanufacturer, Repair, & Reconditioning

Our Lewisville, Texas remanufacturing facility is capable of rebuilding, remanufacturing and retrofitting of circuit breakers, switchgear and related parts. National Switchgear’s trained and certified technicians are dedicated, knowledgeable, and committed to providing high quality shop services. Their internal processes and procedures are continuously reviewed, and all technicians are available to speak directly with customers.


Switchgear Remanufacturing, Circuit Breaker Reconditioning, Rebuilding

National Switchgear’s Surplus Electrical Equipment division warehouse in Lewisville, Texas, is is stocked with vintage switchgear, thousands of surplus circuit breakers, and millions of related parts. National Switchgear is an industry leader in remanufacturing, rebuilding, and reconditioning services associated with the surplus electrical market.


Electrical Equipment Quality Assurance: OEM, PEARL, NICET standards

Their internal processes and procedures are continuously reviewed, and all technicians are available to speak directly with customers. Each product undergoes numerous quality control checkpoints, inspections, and is shipped with a test report showing the final results. National Switchgear’s trained and certified technicians are dedicated, knowledgeable, and committed to quality.


Electrical Power Distribution Field, Shop & Engineering Services

National Switchgear offers new, surplus and repurposed solutions with the ability to rebuild and repurpose legacy electrical power distribution equipment. Nowhere else in the electrical power distribution industry do sales consultants dig deeper to find your specific electrical equipment needs. Customized Solutions National Switchgear’s expert and consultative sales style has earned the enduring loyalty of countless customers.