Pushbuttons for high temp environs

The C22 line of pushbuttons has an all-in-one design that includes the operator and contact blocks in one complete

housing. It provides high-volume original equipment manufacturers with a broad selection of operators, and features, which can be used in high pressure and high temperature wash-down environments.

 Customers can change a button’s function in the field. Maintained pushbuttons and momentary selector switches can be field converted to momentary and maintained, thereby reducing inventory. ”

The C22 product line is compact and easy to install, features monoblock construction with built-in contacts, and engineered for simple push-through and tighten installation. Although the 22-mm design is compact, it offers the same pressable area as 30-mm pushbuttons.

The C22 devices are engineered for harsh industrial environments with an IP67 rating on most front elements. Many standard operators also have more stringent IP69K ratings, protecting them from submersion and high pressure and temperature wash-down.

Standard C22 pushbuttons have a mechanical lifespan of five million operations and can operate in temperatures between -25 and 70°C. The pushbuttons meet Underwriters Laboratories , Canadian Standards Association, and International Electrotechnical Commission standards.

Eaton Corp.
www.eaton.com 

Eaton expands in China with $1.5M wind power agreement

Industrial manufacturer Eaton Corporation says it will provide key wind-power technologies to Guodian United Power Technology Co. Ltd., a wind turbine manufacturer in China. The agreement will generate about $1.5 million in revenues annually for the U.S. firm.

Eaton’s Hydraulics Group based in Shanghai will supply hydraulic power units equipped with Vickers and Integrated Hydraulics screw-in cartridge valves for yaw and shaft braking functions on Guodian wind turbines produced in Hebei Province. Eaton will also supply Aeroquip MatchMate Plus hose and Winner fittings for turbine brakes.

Eaton says it also offers customers power-unit-design capabilities, local production expertise, and technical and application engineering support.

Eaton Corp.

www.eaton.com/hydraulics

Many high-voltage controls for wind plants

Eaton Corporation’s electrical and hydraulic wind-power equipment help transform wind into reliable power and will be on display in Booth #11462. Company products and services span a spectrum of requirements, from small scale to utility-grade needs. Equipment on display at WINDPOWER 2010 includes:

Low voltage power circuit breakers maintain peak efficiency and reduce the time and costs associated with maintenance. The Series NRX low-voltage-power circuit breaker keeps processes up and running and helps protect equipment in the nacelle. It features broad capabilities, a compact size that allows for easy integration into new and existing structures, and it withstands rugged climate conditions. Innovative features for mounting and tool-less accessories are the result of decades of field experience and testing.

The low voltage power circuit breaker provides capabilities of a power circuit breaker in compact size of a molded case breaker. Series NRX offers continuous current ratings from 800 to 1,600A, and an interrupting capacity up to 65 kiloamperes (kA) at 508 Volts alternating current (Vac), and 42 kA at 690 Vac. Further, its innovative mechanism design drives extended maintenance-free contact life. To keep systems up and running, the Series NRX is tested to 20,000 mechanical operations and 10,000 electrical operations, exceeding third-party standards. It meets Underwriters Laboratories standards UL489 and UL1066, as well as International Electrotechnical Committee (IEC) 60947-2.

High performance Series G molded case circuit breakers provide high performance branch circuit protection for step-up transformers at tower bases and ancillary loads in the nacelle. Third-party tested to global standards, this product line features many safety options including ground fault protection and an Arc Reduction Maintenance System, which reduces arc flash incident energy up to 30%. Engineered for reliable performance over a wide temperature range (-20 to +70°C), additional ranges are possible using factory-modified designs.

The Series G includes thermal magnetic, electronic circuit breakers, and molded case switches. They are rated up to 690 Vac, 15 to 2500A, with an interrupting capacity up to 200 kA at 480 Vac and 65 kA at 600 Vac. The Series G family meets UL489, CSA 22.2 No.5, Conformite Europeenne, and KEMA KEUR standards.

VCP-Wi medium voltage (38 kV) vacuum circuit breakers help manage power reliably, efficiently, and safely. The devices are engineered for wind farm collector substations, as well as industrial and commercial applications, and feature a reduced footprint. Maintenance requirements are minimized with the use of enclosed long-life vacuum interrupters, and the component arrangements allow for easy access. VCP-Wi’s direct roll-in configuration simplifies handling and relocation of the breaker. Eaton’s VCP-Wi medium voltage vacuum circuit breakers are rated up to 38 kV, 2500A (without fan cooling) and 31.5 kA.

XT IEC Vacuum contactors (580 to 2,450 A) meet the evolving needs of small and large wind-power systems. These high-amperage contactors can be used to control the power circuit in standard wind power configurations, including fixed speed, doubly fed, and permanent magnet types. Eaton offers vacuum contactors up to 1,000V that include:

• Highly efficient switching
• Extended life
• Flexible control scheme
• Compact design
• Reduced energy consumption and simplified control wiring

The SL line of medium voltage vacuum contactors improve safety, reliability, and performance, even in dusty or corrosive environments. With ratings from 2,300 to 15,000V and current ratings to 800A, the Eaton SL contactor offers solutions for medium to large wind-power systems. Facilitating installation flexibility, they feature reduced weight and size. The long-lived contactors can minimize maintenance. The SL contactors are rated for 160A through 800A for frame sizes at 7.2 kV, and 250A at 15 kV, and are tested to 300,000 electrical operations. Further, SL medium-voltage contactors offer field adjustable control voltages and drop out times.

SVX9000 adjustable frequency drives are a compact, modular solution to variable-speed applications, and can be configured to specific requirements. They feature a wide voltage range, high overload ability, and a user-friendly alphanumerical keypad. High performance drives for demanding applications, the SVX9000 include:

Increased micro-processing power

• Encoder feedback
• High resolution analog inputs
• Speed and torque loop capability
• Customizable software and ease of operation

Ampgard SC9000 medium voltage adjustable frequency drives combine innovative technology with reliable design and construction. The drives are for use with induction or synchronous motors at 2,400 to 4,160V and up to 5,750 hp. The SC9000 features a small footprint, clean and quite operation, modular roll-in roll-out inverter, a fully integrated drive, and efficient variable-speed operation. Further, the SC9000 requires comparatively little equipment space, does not need external auxiliary power supplies, and has reduced power consumption. It meets UL, Canadian Underwriters Laboratories (cUL), Seismic, IEEE519 standards.

A broad range of sensors are available for applications requiring sophisticated non-contact sensing, rugged mechanically actuated switches or reliable safety products. With application engineers who specialize in the variety of sensing technologies, Eaton can help navigate the product-selection process to fit specific requirements.

Sensors for the wind industry include:

iProx for tough inductive sensing. iProx is a versatile, high performing and economical sensor for applications where high sensing performance and inventory consolidation is an issue. The broad product offering includes more than 100 models in four-wire dc and two-wire ac, different barrel sizes, and a variety of connection options. Standard features include extended sensing ranges, high noise-immunity, extreme durability and it contains an embedded microprocessor that lets it perform unique sensing functions at extended ranges. Further, there are a variety of advanced features that allow for full customization to specific application needs.

VoltageWatch: Where power quality is a concern, this sensor facilitates monitoring supply voltage levels, identifying undervoltage or overvoltage conditions, and helping protect critical motors and electronics. A high-performance, RMS voltage sensor in single and three-phase installations, it provides isolated analog output proportional to rated nominal voltage sinusoidal and nonsinusoidal (variable frequency) situations, and is applicable on nominal circuits of 120, 240 and 480V.

CurrentWatch: A comprehensive family of current sensors, current switches, and ground fault sensors, CurrentWatch sensors are capable of measuring ac and dc current and are for monitoring power use and providing diagnostics for electrically powered equipment. The product offering includes battery bi-directional dc-current sensors, which is designed for renewable energy sources that require advanced battery storage and monitoring systems.

Hydraulic power units. The company offers a comprehensive line of industrial power units, including verticals, horizontal, L’s, overheads, JIC and custom configurations. Eaton standard system products incorporate simple power units, bar manifolds and pump/motor groups, which are configurable with Eaton’s Packaged Systems Configurator (PSC2.0). In addition to engineered standard configurations, Eaton’s Application and Commercial Engineering (ACE) Group can design, manage, and help install custom power units for special applications. Specializing in different applications and requirements for custom systems, Eaton has a network of approved integrators.

Aeroquip brand “MatchMate Global” braided and spiral hydraulic hoses offer:

• Higher working pressure
• Increased temperature ratings
• Superior abrasion resistant covers

State-of-the-art materials and technology let MatchMate Global hoses extend product life and prevent hose failures, typically the result of cover abrasion. Further, the hoses meet and exceed relevant SAE and EN standards.

Pitch control cylinders with integral valves, the Vickers LESA Series TT servo actuator, combines a high performance hydraulic cylinder and a control valve mounting manifold in one convenient package. Advanced, closed-loop motion control comes from the addition of a proportional or servo valve and a precision non-contacting feedback transducer, and appropriate electronic controls.

The LESA series of servo actuators eliminate need for separate hydraulic manifolds, plumbing between control valve and cylinder, transducer mounting brackets, and other complex arrangements. With the option of a cast aluminum cover, a position transducer can be conveniently and safely contained within the cylinder assembly. This lets the LESA Series TT servo actuator work comfortably in harsh environments that can easily damage most electric servo motors with ball screws and other types of actuators.

Incorporated into the design of the pitch control cylinders, Eaton’s Vickers proportional valves have product breadth and width consisting of onboard electronics (OBE) & non-OBE, full functionality, complete sizes, and different performance levels to meet various customer demands. The KB family of proportional valves integrated OBE with superior reliability and durability.

Yaw brake, drive brake and pitch control power units are high-performance, low noise, small packages built for harsh environments. Eaton’s Vickers brand provides quality hydraulic power units and innovative equipment for power and motion control needs with state-of-the-art screw-in cartridge valve technology. Eaton offers a comprehensive range of cartridge valves for the wind industry.

With the spread of Manifold Circuit Design to encompass a variety of hydraulic markets, Eaton incorporates customer specifications and creates a simple and robust manifold. For added flexibility and function, manifolds can be packaged with Eaton’s industrial valve line or a range of other hydraulic products.

Poster presentation describes blade pitch controls

Pitch-control systems are crucial to the overall operation of a utility grade turbine. There are two prevalent approaches to the task: Hydraulic and the Electric Pitch Systems. Combining end-user feedback and an internal Eaton assessment, this poster presentation considers each system from a performance, safety, reliability, and maintenance perspective. The poster will analyze these on a system and component level and outline the benefits of the hydraulic approach.

How to monitor and remotely control electric vaults

VaultGard can connect up to 32 network protector relays through existing shielded twisted-pair (STP) cable, and it is rated for harsh environmental stresses typically found in underground vaults. The integrated graphics display in VaultGard from Eaton Corp., provides expanded capabilities that tracks network protector metrics. The arc-resistant, low-voltage switchgear protects against arc faults in breaker, bus, and cable compartments with no increase in footprint. This ANSI Type 2 arc-resistant low voltage switchgear keeps human life and building infrastructure safe in the event of arcing. It protects operating and maintenance personnel from dangerous arcing faults by redirecting or channeling the arc energy out the top of the switchgear, regardless of the origination location of the arc.