A coastal utility procured their first metal enclosed capacitor bank from Controllix Corporation. The customer was accustomed to using open rack style capacitor banks, but a fully welded metal enclosu...
Existing Equipment Retrofit
A mid-west utility approached Controllix with a request to replace their existing outdoor metal enclosed 34.5kV, 1200A fixed breaker used for the daily switching of a remotely located Controllix 10.8MVAR capacitor bank. A capacitor switch with a pre-insertion resistor to limit the inrush current was chosen in place of the fix breaker. The end-user was [...]
Factory Energy Savings
A midwest foundry commissioned Controllix for multiple metal enclosed harmonic filter equipment. Each project involved a single stage harmonic Filter with 5th and 11th harmonic tuning frequencies. The 11th harmonic filter also included a high pass resistor. The successful installation of the harmonic filters reduced the foundry’s energy costs and filtered harmful harmonics generated by their equipment.
Controllix’s Design Versatility Simplifies Multi Site Installation
A large midwestern utility sent an October quote request to Controllix requiring a total of 76 large (6000 and 9000kvar) metal enclosed capacitor banks at 13.8kv. There were 11 equipment designs to accommodate various substation limitations. All 76 units needed to be on site at 36 different substations by the end of the following April. [...]
Controlling System Voltage
Without capacitors, the voltage drop across a system is calculated as: […]
Seismic Certification of Capacitor Equipment
Controllix metal-enclosed capacitor banks are designed for withstanding the most violent of natural phenomena, including earthquakes and wind storms. Specifically, Controllix equipment is certified for Zone 4 seismic compliance. The results of studies (available upon request)Â indicate that Controllix assemblies are qualified to withstand the effects of gravity dead load and high seismic loading conditions specified [...]
Air Core vs. Iron Core Reactors
Introduction At the medium voltage level, 2.4kV through 34.5kV, harmonic filters are often designed, specified, and manufactured with either Iron-core or Air-core reactors. The preference for one reactor over the other may be from experience, familiarity, misconception, or some good technical reason. This document should help in presenting the major differences and benefits that exist [...]
Guide for Plant Engineers
Power Factor and Harmonics Power factor is defined as real power, the power that does work, divided by apparent power, the power that must be delivered in order to get the work done. Real power is measured in kilowatts (kW) and apparent power is measured in kilovolt amps (kVA.) Power factor is sometimes denoted as [...]
Metal Enclosed vs. Rack-Mounted Capacitor Banks
A Metal-Enclosed Bank comes fully assembled, tested, and ready for interconnection. No field assembly is required. Therefore installation costs and problems associated with mistakes during installation are very low. Maintenance costs for Metal-Enclosed Banks are low. Special equipment such as bucket trucks and hot-line tools, as well as trained personnel necessary to [...]
Pad Mount Capacitor Banks
Click here to view and download the specs MEDIUM VOLTAGE PAD MOUNT CAPACITOR BANK SPECIFICATION I. SCOPE A. This specification covers the electrical characteristics and mechanical features of a three phase, 50 or 60 Hertz, self-contained, pad mounted, metal enclosed capacitor bank. B. This unit shall meet all applicable provisions of ANSI, IEEE, NEMA, AND [...]
