Electrical

Electrical October 1, 2000

Industrial lighting fixture

Industrial lighting fixture offers optimal performance with T8 lamps and high-light-output ballasts. Precise herringbone slots run the length of the fixture body to provide 170 degrees of even distribution above the fixture at 92-percent energy efficiency and 90-percent light output below the fixture.

By Staff
Electrical October 1, 2000

Uninterruptible power supply – 2000-10-01

Uninterruptible power supply (UPS) is online, double-conversion type in 3 kVA and 5 kVA sizes that offer accurate, high-frequency IGBT digitized power. UPS offers a battery-management system that automatically determines charge and discharge rates, maximizing run times and battery life.

By Staff
Electrical October 1, 2000

Radiant floor-heating pump

Radiant floor-heating pump improves control and energy use in primary- and secondary-piping configurations.

By Staff
Electrical October 1, 2000

High-efficiency transformers

High-efficiency transformers are optimized to meet NEMA TP-1 limits, which specify maximum losses at an average calculated load of 35 percent of the nameplate rating. Compliance with the EPA Energy Star program allows U.S. customers to meet standards with E-versions of low-voltage, general-purpose transformers.

By Staff
Electrical October 1, 2000

Raising the Bar, with Raised Floors

The best moments in consulting are when clients need to solve seemingly intractable problems, and the consultant can offer creative ideas and approaches that—more than simply overcoming the challenge—create a project of superior value and performance. Such an opportunity arose at the new Student Services Building at San José State University (SJSU), San José, Calif.

By STEVEN GUTTMANN, P.E., Principal, Guttman Blaevoet Consulting Engineers, San Francisco, Calif.
Electrical October 1, 2000

Pipe-joining system

Pipe-joining system for small-diameter, lightwall stainless-steel and carbon-steel piping in sizes 0.5 inch through 2 inches requires no welding, threading or flanges. Assembly involves cutting the pipe to size, inserting into couplings and pressing with a handheld electric or electrohydraulic tool, creating a permanent mechanical union.

By Staff
Electrical October 1, 2000

Transformer protector

Transformer protector is designed exclusively for primary-side applications on distribution substation transformers rated up to 60 MVA at138 kV. Electrically linked, manually reset pole-units provide less than 1/4-cycle, three-phase tripping simultaneity. The device is compatible with any relay-tripping system.

By Staff
Electrical October 1, 2000

Refrigerant level sensors

Refrigerant level sensors detect the presence of refrigerants at a specific point in refrigerant vessels, intercoolers and packaged chillers. Previously available only for ammonia, the single-point sensors and switches have now been developed for R-22, R-134a, R-404A and R-507.

By Staff
Electrical January 1, 1970

Building Corporate Backbone

When the owners of ING Investment Products Group decided to build a new headquarters in West Chester, Pa., cabling infrastructure was a big concern. Recognizing the fast pace of technological developments and how difficult it is to avoid rapid obsolescence, they wanted a voice and data infrastructure that gave them not only reliable performance, but also longevity.

By Staff
Electrical January 1, 1970

Clean Lamps = Big Savings

The results are in. Commercial building owners in the United States could save between $2.7 and $3.6 billion dollars per year by simply cleaning fixtures on a regular basis, according to a federally-funded four-year building-lighting study conducted by the InterNational Association of Lighting Management Companies (NALMCO), Des Moines, Iowa.

By Staff