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Power capacitors

Internally fused capacitor units

Eaton's Cooper Power series medium-voltage, single-phase, all-film internally fused capacitors feature the latest design innovations: extended foil, solderless connections, CLEANBREAK fusing system and laser-cut aluminum foil. Designed, manufactured and tested to meet or exceed the requirements of applicable ANSI/IEEE/IEC standards, their extended reliability provides low cost per kvar–making these capacitors a simple, economical source of reactive power.

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Power capacitor components information Sustainable manufacturing information
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Space savings
Footprint reduction and smaller enclosures
Robust materials
Longer service life
Various applications
Meets IEEE and IEC standard requirements

Core features

  • All-film, extended-foil, solderless capacitors with a high stacking factor
  • Stainless-steel tank with light-gray finish for resistance to severely corrosive atmospheres
  • Environmentally acceptable proprietary Edisol VI dielectric fluid that provides an ideal balance between low- and high-ambient temperature operation
  • Light gray, porcelain bushings; glazed for high strength and durability and hermetically sealed with gasket-free design
  • Internal discharge resistors that reduce terminal voltage to meet IEEE and IEC requirements after the capacitor has been disconnected
  • CLEANBREAK element fusing system
  • Blue non-PCB decal provided on each unit

The benefits of power capacitors

Watch this short video to learn how power capacitors improve your power factor, efficiency and provide substantial benefits to the electrical system.

Surge application solution

Eaton’s surge capacitor offering provides a cost-effective solution to absorb energy generated during surges events – lightning strikes, switching surges, equipment failures, etc. Electrical surges are common occurrences on power systems, which can be damaging to sensitive equipment such as transformers, generators, motors, reactors, and other similar type equipment with insulated windings.
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CapSeal bushing bonding process enables significant environmental benefits

Eaton’s capacitor unit construction features our CapSeal bushing bonding process. The bushings are hermetically sealed via a molecular bond at both mating ends providing a gasketless, swagless design that eliminates seal degradation failure opportunities. This process has enabled significant environmental benefits – greatly reducing precious metals and flux usage, decreasing 75% of zinc content from waste water and enabling Eaton’s Greenwood Emerald Road facility to fully eliminate lead.

Reliable foil design

Construction features extended-foil elements, mechanically crimped with a laser-cut aluminum foil active edge. Solderless connections eliminate localized heating and cold solder joint failure modes, assuring exceptional uniform current distribution resulting in outstanding transient performance. Laser cut process precisely controls a uniform rounded edge reducing the electric field stress, significantly increasing the discharge inception voltage (DIV) to the highest design margin in the industry.

Innovative CLEANBREAK system

Eaton's patented design ensures individually protected elements and prevents cascading failure. Polymer fuse tubes with isolated mounting avoids damage to adjacent components. Paperless design eliminates the generation of extensive carbon arc byproducts in the dielectric fluid. Fuse operation reduces stored parallel-element energy from being discharged into the fault, which minimizes gas contamination and further damage, resulting in life extension and improved dielectric performance.

Universal solution for multiple applications

Eaton’s capacitor design has been field proven in a variety of applications. Product expertise is leveraged to make a standard design capable of being tailored for custom needs such as indoor and outdoor applications, pole-mounted, open air, metal enclosed and mobile bank solutions and specialized needs including shunt, series, High Voltage Direct Current (HVDC), Static Var Compensation (SVC), filter applications and micro banks.

Exceptional dielectric solution

Dielectric system utilizing polypropylene film and proprietary Edisol VI fluid achieves industry-leading ambient temperature applications. Each unit is individually monitored in a closed loop fluid impregnation system to prevent contamination. Fluid impregnation and gas molecule evacuation is superior to batch fill designs, resulting in reduced infantile failure rates and lasting performance. Leak and performance testing is conducted on 100% of units at three key manufacturing gates to assure product integrity.

Severe environmental exposure

Eaton's capacitor units are designed, constructed and tested to provide unparalleled performance in the harshest environments. The tank is constructed from titanium stabilized 409 stainless steel, robotically welded and painted with epoxy primer and urethane topcoat. This construction features a copper impregnation fill tube, nickel plated terminals and patented bonding techniques. Extra creepage bushings are available for contaminated and high altitude needs. Units are validated to ANSI C57.12.29 coastal environment standard.
Specifications

Ratings

Voltage (V)

 2,400 - 16,500
Basic Insulation Level (BIL) 95 - 200 kV
Standard kvar 100 - 1000
Temperature rating Per required temperature category

Unit tank

Tank design 409 stainless-steel, seam welded, gasketless hermetically sealed, light-gray finish
  
Tank coating Tank is sand blasted, industrial washed and dried, finished with an epoxy primer and a urethane topcoat coating system
  
Mounting provisions Stainless-steel mounting brackets with industry-standard 15.62-in. mounting center for unit interchangeability; underside of each bracket is unpainted for positive grounding  

Unit features

Number of bushings 1 or 2
Bushing construction Light-gray, porcelain bushings; glazed for high strength and durability and molecularly bonded gasket-less hermetically sealed to the capacitor tank
Internal discharge resistors Integrated safety provision to dissipate terminal voltage in accordance with IEEE and IEC requirements
Terminal size Parallel-groove terminals accommodate copper or aluminum conductors from AWG  #8 solid to AWG #1 stranded
Terminal cap Uninterrupted continuous current path from elements to nickel-plated terminal caps utilizing heavy duty lead wires
Fuse protection CLEANBREAK element fusing system

Application details

Applications Open air banks, metal-enclosed banks, mobile capacitor banks and specialty applications (HVDC, SVC)
Protection Unbalance protection (H+ Diff)

Standards

IEEE Std. 18
IEC

60871-1

60871-4
CSA CAN/CSA-C871-1
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Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.
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