Systems

 

 

Integrated electrical and low-voltage systems of all types—inside and outside a building—encompass the range of work that electrical contractors do. The articles in this section highlight different types of work, from security, fire and life safety, to traditional electrical power and distribution, to lighting, cabling and more. 

Figure 1: Power quality phenomena over the voltage range

The lights blinked for an instant, or a running appliance made a sound like the motor was slowing down. No digital clocks were blinking, no computers restarted, no production lines stopped.

Security systems solutions are designed to keep customers and their facilities safe, detect intruders, and obtain visual evidence and identification.

Many contractors have said to me, “The fire alarm system is supervised, and I have a green light on the fire alarm control unit.

A new piece of software developed by students will make streetlight outage detection a lot easier and faster for the City of Las Vegas.

More on Systems

 
Ironing out the Kinks

When wireless sensors and detectors came on the market decades ago, the devices were known more for missing signals than capturing alarm activity. They were used in a “patch” type of approach, applied when hard-wired devices were impossible.


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Essential to the Integrated Environment

Sensors and detectors have upped the ante with intelligent features and supervision, making them essential to an integrated and automated building environment.


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Simplifying the Process

Virtual private LAN service (VPLS) connects local area networks (LANs) over the Internet and makes each private LAN act like a single Ethernet LAN. This is a seamless way to keep remote and branch locations connected-something practical in today's global marketplace.


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Designing for Building Integration

Interest in integrated building systems (IBS) is stronger than ever. These systems not only improve the overall performance of a facility, but the performance of the workers as well.


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Measuring Up

Imagine what would happen if you were working on a construction project and had to make a measurement. You used your tape measure and got a length based on the markings on the tape. A member of your crew showed up with a laser ranger and made his measurement.


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More than 'Just in Time'

'Just in time' used to be the battle cry in security product manufacturing and distribution. Now, it is more than just in time-it is all about arming the contractor with the information they need to boost sales and present the end-user with a product portfolio adeptly suited to the application.


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Catch a Wave

Many fiber optic specifications and tests refer to wavelength because most parameters have some wavelength dependency. Attenuation, for example, is caused by absorption and scattering. Absorption occurs at certain wavelengths and scattering gets less significant at longer wavelengths.


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