Unfused capacitor units

Power capacitors

Eaton's Cooper Power series medium-voltage, single-phase, all-film, unfused capacitors feature extended-foil elements, solderless connections and laser-cut aluminum foil in a high stacking factor design. Designed, manufactured and tested to meet or exceed the requirements of applicable ANSI/IEEE/IEC standards, these capacitors are a simple, economical and reliable source of reactive power on electric power systems.

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Personnel safety

Superior definite tank rupture characteristics

Environmentally friendly

Decreased CO2 emissions

Various applications

Standard Duty through Extreme Duty ratings

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 standards requirements after the capacitor has been disconnected

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, ensuring 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.

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.

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.

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

Product offerings	Standard-duty (SD type) capacitors Heavy-duty (HD type) capacitors Extreme-duty (XD type) capacitors
Voltage (V)	2,400 - 22,800
Basic Insulation Level (BIL)	95 - 200 kV
Standard kvar	50 - 600
Temperature rating	-40 to +55 °C (Standard-duty ratings) -40 to +55 °C (Heavy-duty ratings) -50 to +55 °C (Extreme-duty ratings)
Continuous rms overvoltage capability	110% (Standard-duty ratings) 125% (Heavy-duty ratings) 125% (Extreme-duty ratings)
Peak overvoltage capability	120% (Standard-duty ratings) 135% (Heavy-duty ratings) 135% (Extreme-duty ratings)
Tank rupture curve defined through	10kA (Standard-duty ratings) 10kA (Heavy-duty ratings) 15kA (Extreme-duty ratings)

Enclosure

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; under-side of each bracket is unpainted for positive grounding

Devices

Number of bushings	1 or 2
Bushing construction	Light gray, porcelain bushings; glazed for high strength and durability and molecularly bonded gasketless 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

System

Applications

Pole-mounted banks, open air banks (externally fused or fuseless), metal-enclosed banks, mobile capacitor bank and specialty applications (HVDC, Series)

Protection

Externally fused

Unbalance protection (H+ Diff)

Standards

IEEE

Std 18-2002 (Standard-duty ratings)

Std 18-2012 (Heavy-duty ratings)

Std 18-2012 (Extreme-duty ratings)

IEC

60871-1

CSA

CAN/CSA-C871-1

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Eaton offers factory, on-site and remote power capacitor training options.

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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.