Electrical Industrys Protection - Destruction for Good
Destruction! Blow Up! Eliminate! These are not pleasant words! Unfortunately, when it comes to safety we have no other choices. In the electrical industry, fuses are destroyed in order to protect lives or property. Whenever there is a big fault in the power lines, possibly caused by short-circuiting, fuses are very helpful to stop the flow of current. Unlike circuit breakers, fuses have no mechanical moving parts that can fail to operate. A fuse is just an electrical link in the circuit that can melt very quickly whenever a certain temperature is reached. Fuses have 4 things to do in a circuit: 1. They must sense faults 2. They must open quickly when a short-circuit occurs 3. They must also sense the normal overloaded conditions, but must open if the overload becomes excessive or prolonged. 4. They must not change or alter the characteristic of the current during normal operation. Early types of fuses use lead wires, selected based on their diameters, connected to terminals. These types have some disadvantages. Whenever a fuse blows, the molten metal spatters over the equipment and could cause injury to people or cause fires, especially when the arc was not confined. Later, cartridge fuses replaced the old lead wire fuses. These consist of non-conducting cylinders which contain soft metal fuse strips. The strips are connected to the ends of the cylinders by metal caps or ferrules. The entire cartridge fuse is mounted onto a matching fuse block. Even these cartridge fuses have 2 types - those with renewable fuse links and those one-time non-renewable types. The only advantage of the renewable type - they are more economical because the cartridge can be reused. However, more precautions are needed with regards to the cleanliness of the contacts, the securing of the cap bolts, and the choice of the current rating of the link. Whenever a fuse blows, it means there is already a big fault in the circuit. Electricians must be especially careful during this time and take the necessary precautions. The fuses blow up for safety. Don't cause another blow up! Until next time... Are You Stumped by Complicated Electrical Calculations?Learn Electro-Technology Calculations for 1st Class Marine Engineers Competency License Exams at Electro-Technology Questions & Answers e-book. Applicable for all electrical installations both on ships and at shore. Many years of working experience in Marine, Facilities, Construction has given the author material for writing e-books and articles related to engineering, and management. Subscribe to facworld ezineMore information at Marine Engineer and M & E Engineer
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Yoga therapy for stressed out motormenTimes of India, India - 9 hours agoThe railways have now tied up with an NGO to study the effect of regular yoga on the health of stressed out motormen. Kaivalyadhama Yoga Institute ... |
Yoga with a kickKOLD-TV, AZ - 15 hours agoBy Jenny Anchondo - email If you're tight and lack overall flexibility, the last thing you should attempt is yoga, right? Wrong. ... |
Hatha yoga at Rowley Public LibraryIpswich Chronicle, USA - 8 hours agoThe Rowley Public Library offers a mixed level Hatha yoga class for adults of all fitness levels Wednesdays Sept. 3-Oct. 29, 5:30-6:45 pm, in the Community ... |
The conventions: Good for a laughBoston Globe, United States - 7 hours agoI kept my eyes glued to Sara Avant Stover's pieces on the Yoga Journal website, where she has written on subjects like "The DNC's Challenge: Can You Walk ... |
Yoga at the River’s Edge continuesMarshfield Mariner, USA - 13 hours agoNorth and South Rivers Watershed Association’s Yoga at the River’s Edge series will continue through Sept. 20. Weekly classes, taught by certified yoga ... |
Nikita, not dressed for the occasion?Times of India, India - 5 hours agoYoga guru Yogi Ashwini recently organised a spiritual healing session to promote the practice of yoga. Former Miss India-Universe Nikita Anand rued that she ... |
Martha's Vineyard Magazine |
Finding your yogaMartha's Vineyard Magazine, MA - 22 hours agoJust like Goldilocks trying to find the right porridge and bed, this writer had to sample different styles of yoga before settling into a groove that worked ... |
Yoga - Google News
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