Switch-fuse disconnector
After more than 20 years trying to convince me to use low-voltage circuit breakers everywhere, the sales engineer from Schneider Electric, whom I know very well, approached me about using fuses …
I could not believe my ears!
I wanted to share my story with you and get your opinion…
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There is no lack of innovation in the field of cable management systems for wires, cables and optical fibers. Not so surprising as cable management systems represent a significant cost in labor and are key to the networks distribution strategy.
One could think that cable trays in steel wire or in sheet metal have reached a peak in innovation. Manufacturers are always launching new functions or new assembly methods in order to stand out in a very competitive market. The overall trend is the simplification of ranges and thus the speed of installation. Distributors (who want to stock references and accessories always more polyvalent and less bulky), installers and their subcontractors (in permanent search of saving time on the worksite) are directly concerned.
Intuitive and no cut-out assembly
CTS : stored flat, this angle will be quickly shaped when the time comes.
CTS with its brand CES, proposes for example intuitive assembly solutions while trying to limit the need for cut-outs as much as possible. Cut-outs constitute indeed a waste of time and increase the risks of accidents. Besides, this manufacturer should soon launch a significant improvement for the standard rail 41x41mm, integrating more functions… and fewer accessories.
Gewiss offers a variable-angle elbow named Maricurve that adjusts without cut-outs. A plier or a hammer are sufficient to initiate the needed deformation and to adapt the angle at the worksite. All this based on one single element delivered straight. This accessory ensures an automatic coupling and guarantees ground continuity.
Join the forum discussion on this post The IT earthing system, when used properly and in the relevant electrical installations, provides numerous advantages, despite the misconceptions held against it. The main advantage is that it increases the availability of the installation. It helps reduce the risk of fires and explosions. It increases the lifespan of the electrical equipment. It also facilitates preventive maintenance and at the same time optimizes the overall maintenance costs, which means that the initial extra-costs are paid back.
With IT earthing system, the power supply has no point connected with earth (source: Wikipedia)
Join the forum discussion on this post Find below a new update from Richard Douglas on the debate between high voltage circuit-breaker or fuse !
Laurent
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I would like to come back to the debate of last year about MV/LV transformer protection using circuit-breakers or fuses.
There were a lot of comments confirming my opinion that circuit-breakers are the best MV/LV transformer protection solution.
However, there were also comments, and that was the debate, that promote fuses as the preferred solution. The main suggested reasons for this are that fuses are: lower in price, have a faster response time for high short-circuit currents, require less maintenance and that it is very simple to understand how they work.
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I am a young professional in charge of electrical maintenance and new works of a Lime production site in Belgium.
From time to time I subcontract the renovation of electrical control panels to panel builders. Frankly speaking, I find the bill amount is going up and up! When asked why, my panel builder gives straightforward answer like ”Sir, have you seen the price increase of copper these days? The price of the cables has doubled in recent months, moreover, all materials costs have increased!”
Similarly, I often hear that his workers are not happy with peanuts, and that social charges and taxes are also increasing, blah, blah, blah…
But I discovered recently that there are solutions on the market to make panels quicker to assemble, and thus cheaper than the ones I pay for, I’m pretty sure.
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