The Owner

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Jun 152013
 

These tests should be made to the system put into service and repeated, then, modifications, repairs or extensions of an electrical installation. The installer has to demonstrate that the installation meets the requirements regarding protection of human beings, animals and electronic equipment 1. Let’s see now what weight has measurement of resistance of insulation within the mandatory testing and to what extent the connected consumer installations or surge protectors can distort the results of the test. In general terms, with the insulation measurement, the owner or user of the installation gets data about the security status of the installation. If the resistance is too low the cables are subjected to loads excessive that they can become the focus of a fire. Just this fact was that caused insurance companies to impose periodic measurements of insulation for industrial electrical installations. But what means a low insulation resistance and how we can detect it? Also here the norm (DIN VDE 0100 part 610) is very explicit.

Measurement to apply voltages and insulation resistances allowed are indicated in table 1. As seen in this table, in installations with a nominal voltage of 230/400 V insulation measurement is performed with a DC voltage of 500V. The resistance between the points described below has to be exceeding 0.5 MW, taking into account interference arising from the capabilities of the cables are excluded when measuring on direct current. The measuring device must comply too, as it is logical, the requirements of the standard DIN VDE 0413 part 1. Now it is important knowing between what drivers has the measurement. Again (we find the answer in the norm, which establishes the following: to) between the active phases (L1, L2, L3) and the protective conductor (PE).

(b) between the neutral (N) and the protective conductor (PE). (c) between the active phases (L1, L2, L3). The insulation resistance must be carried out without a network connection, but consuming facilities may follow connected if the values provided in the preceding table are met. Otherwise it must be disconnected consuming the network facilities to carry out the test. However it is important to check if electrical devices with electronic or sensitive components that can be seen are connected to the circuit to be tested affected by the test voltage measurement to apply voltages and insulation resistances allowed table. Rated circuit voltage test voltage V minimum resistance value of insulation protection or control of low voltage 250 MW circuits 0.25 nominal voltage less than 500 V, if it is not protection or reduced control circuits voltage 500 0.5 more than 500 rated voltage 1000 V 1.

Chain Saws

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Jun 032013
 

The rotation of the saw is attached to a motor. Chain saws are designed for cutting of any wood species and is an indispensable tool for professionals and for ordinary townsfolk. mation. The most important technical characteristics of chain saws – the length of the tires, engine power, as well as the shape and size of teeth of the chain. Depending the type of engines at work with power-saw benches used electric chain saws and gasoline (abbreviated chainsaw). Saws work on the engine, placed inside the body. Motor with gear drives action chain blade, located at the outlet of the housing. On the canvas are rotated cutting elements – saw teeth, thanks to which is committed sawing wood.

Electric chain saw combines the properties power tools and chain saws. From the first she had taken eco-friendliness and cleanliness of the second – the possibility of sawing wood quickly and easily. In comparison with the chainsaw electric saw has several advantages: it is universal, electric saw less noisy and easy to maintain, less weight. But the electric chain saws are sensitive to voltage fluctuations, and bind to the power supply limits the radius of its action. Therefore, when working with power-saw benches saws are used for stationary work.

Gasoline chain saw is operated with a two-stroke internal combustion engine running on a fuel mixture of gasoline and oil. The chain, which is located on rail saws, sawing provides. Professional chainsaw – perhaps the most common form of drinking in logging. They have a high capacity (as a rule, more than 2,5 kW), characterized by a wide range of functionality. Used when working in harsh conditions at high and low temperatures, with any wood. This tool can work more than 10 consecutive hours with consistently high performance. These saws are made of durable and wear-resistant materials, and their share in the range 1300-2000 hours. And, of course, is a significant advantage chainsaws – mobility. With a gasoline engine, you can log sawing on a mini sawmill directly at the allotment. But the chainsaws are a number of drawbacks: – it is heavier than electric chain saw – it requires more care than the electric saw. Pros and cons are of each type of drink. and when you consider all the nuances, picking up a saw for cutting wood, your performance will increase significantly. When correctly selected mini-saw sawmill becomes an indispensable assistant and partner.

Cosmetology

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Jun 032013
 

Beauty, Cosmetics and Beauty rapidly evolving – there are new solutions, methods of face and body, more efficient and sparing technology rejuvenation. It would seem that the choice of vocational courses Cosmetology not a problem, but not all training centers or companies offering training services for various specialties, possess a sufficient level of competence in this area. As a rule, companies and training centers that offer 'learning everything and all the' not too picky approach to the selection of teachers for training beauticians, and do not have adequate material and technical base. Invited to teaching specialists centers not specializing in cosmetic and aesthetic medicine, often themselves unaware of modern techniques and have only theoretical knowledge of the work on modern equipment. Consequently, choosing courses cosmetologists must, above all, focus on who they are organized. It is desirable that the courses were conducted in a special training center of a serious company, which has a large experience in the field of cosmetology and aesthetic medicine.

Cosmetology courses, in this case would only lead practitioners whose competence is no longer leave your doubts. After all, a company whose specialize in cosmetology, will not risk its reputation in this area, and even in a professional environment. Second, on what to look for when choosing courses beauticians – course. Program should involve not only theoretical but also practical part of learning, because without practice cosmetology courses are unjustified waste of time and money. Focuses not only on the fact How many hours on the practice, but also how it is organized. The practical part of lessons in the course of cosmetology shall be conducted only in specially equipped classrooms and cosmetology offices.

The program itself of the courses should be in the public domain. On demand (and better, even before it sounds), you must provide it in hard, not only in oral form, with payment instruction. If you have not seen the program you selected cosmetology courses, but only heard about what it will be about – it is possible that the learning environment and quality of the submissions will undergo significant changes. Therefore, for the courses cosmetologists who have no clear agenda, as well as for any product that you refuse to show before you buy, pay should not be. Also, the program you have selected courses cosmetologists must be maximally specific, so you can see the entire list of directions, that can help you in further action. Better if the training is conducted in a specific area, such as: training mesotherapy, botox, contour plastics, cosmetics and hardware. etc. An additional plus would be if you chose a company that regularly conducts seminars. This will help you to consolidate and deepen obtained through courses cosmetology knowledge. After all, for the practitioner, regardless of experience of its work and theoretical knowledge necessary not only to regularly upgrade their skills, but also to communicate in a professional environment. Therefore, choosing a course of cosmetology, address only to professionals with significant experience, well-designed courses and a modern logistic base. Choose a company that not only teaches, but and learning itself – constantly improving its working methods. After all, without putting forward an increasingly complex problems and find their solutions, modern cosmetology and aesthetic medicine, is simply unthinkable.

Protection Monument

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Jun 012013
 

Monument Doira included in the World Directory of monuments animals. Antaeus, Viking and Daisy far from Novosibirsk, the station Inskaya, a monument to search dogs Anteyu. He served with his conductor Ivan Litvinov in the Protection of paramilitary Ministry of Railways. 12 years dog carried the hard service with the harassment, detention. More than once he saved the life of his master. Antaeus died of old age in the nursery, the site says ikt.oblcit.ru.

On the pedestal is written, that over the years Anthea works, from 1968 to 1980, with the help of detained more than 100 criminals and crimes solved in 1962. According to dogslove2007.narod.ru, in Schelkovskogo riot is a monument to Shepherd, the Vikings established for their money canine Larissa Krepkova. 'Faithful friend and companion' – reads the inscription on the pedestal. In Novosibirsk, a monument to Shepherd Daisy, who died in Chechnya. Canine Evgeny Zaytsev with a three-year sheepdog conducted reconnaissance. Sideways Shepherd found a radio-controlled bomb. As soon as the dog sat down beside him, the militants have led a land mine in action.

Shepherd died on the spot, her boss was seriously injured. The border guard with a dog in the Moscow subway March 13, 1938 in Moscow subway station opened, "Revolution Square". Pylons of the station hall form 18 (originally 20) arch-passes to the landing platform. In the niches of the arches are installed 76 bronze figures. At the opening of the station all the pieces were gypsum, but soon replaced them with bronze.