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Evaluating the lifetime behaviour of LEDs
Information from Philips Lumileds Automation
One of the strongest propositions of LEDs is their long lumen maintenance compared to most conventional light sources. The perception of LEDs' reliability is reinforced by the practice among manufacturers of offering long warranties on their LED luminaires... (more)
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Thermal measurement for LEDs
by Rajendra Swamy, Osram Opto Semiconductors
One of the most critical design parameters in an LED illumination system is its ability to draw heat away from the LED package. High operating temperatures at the LED junction affect performance adversely, resulting in colour shifts and decreased light output and lifetime... ( more) |
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New standard for LV switchgear, controlgear assemblies
Information from ABB
Only two parts of the IEC 61439 standard are necessary to determine all requirements for each type of electrical assembly: the basic standard IEC 61439-1 General rules and the specific assembly standard... ( more) |
Switchgear or switchboards?
by Morris Kornblit, Dennis Balickie and Vicent Incorvati, GE Electric Seemingly minor variations in design and specification can have significant impact on projects' economics and space efficiency, posing the question whether to use switchgear or switchboards. The question often arises whether to apply switchgear or switchboards... ( more)
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Industrial PCs: the top five challenges on the factory floor
Information from Phoenix Contact
The top five challenges typically encountered on the factory floor and criteria for selecting industrial PCs and associated components. With PC-based control systems gaining popularity, plant engineers are turning to industrial PCs (IPCs) for control and data collection... ( more) |
Vortex meters for liquids, gas and steam
by Oliver Seifert and Ellen-Christine Reiff, Endress+Hauser
To optimise cost and process sequences, the consumption, storage and demand for gas, steam and most varied liquids must be controlled at regular intervals. Vortex meters are perfectly suited for this task... ( more) |
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Is your power protection costing too much?
by Pedro Robredo, Eaton Corporation
Five questions to ask before buying a high-efficiency, multi-mode UPS. In the quest to reduce energy consumption and cooling costs, data center managers have been looking more closely than ever at energy efficiency... ( more) |
The dangers of entering live enclosures
by Barry Gass, ACTOM Protection & Control
Why persons entering live substations and enclosures must be trained to work in substations unsupervised. There are many dangers and hazards which must be taken into account when entering live substations and enclosures, and many accidents can be avoided if the correct action is taken... ( more)
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