electrician warsaw
Light in electrical sources can be produced in two basic ways:
— by heating suitable solids to a high temperature,
— by causing luminescent radiation.
Electric light sources are divided into the following groups:
a) lamps with temperature generation of light - incandescent lamps;…
The power network supplies receivers of a very different nature and purpose. These receivers can be classified from different points of view, but the most common breakdown is by application. The following groups of receivers have a decisive influence on the operation of power grids and installations:
— silniki elektryczne,…
CONSTRUCTION OF CAPACITOR BATTERIES.
The nationally produced capacitor banks consist of one power-control unit and capacitor units in the number from 3 do 12 pieces. The batteries composed of these members constitute a structural whole and are produced as an integrated prefabricated element. Człon …
Poland's energy capacitors are manufactured in accordance with the requirements of applicable standards, except that this only applies to medium voltage capacitors, because low voltage capacitors have not been manufactured for a long time. Nie ma wobec tego potrzeby podawania wymagań normy dotyczących …
Basic protection (protection against direct contact) its purpose is to prevent direct contact with live parts.
Primary protection measures are primarily:
— insulation of live parts, these parts should be completely insulated, which can only be removed by destroying it, e.g. …
Electric appliances, due to the protection against electric shock, are divided into four classes: 0, I, II and III.
Class 0 includes devices, where only basic insulation is used (working). They are characterized by the lack of a terminal intended for connection with the protective conductor.
Class …
By starting the design of the lighting installation, you need to have, similar to force installation, so-called. construction bases and precise data on the purpose of all rooms and the requirements for the type of lighting designed. Wskazówki dotyczące wyboru rodzaju opraw oświetleniowych oraz wybrane najmniejsze dopuszczalne średnie …
When selecting the number and locations of switchboards, the following rules should be followed:
— all receivers belonging to the same process line should be supplied from one switchgear,
— each dedicated production space should have its own switchboard,
— zaleca się ustawić rozdzielnice …
Suspended luminaires for fluorescent lamps, OP-440-1 type
Luminaires are intended for general lighting of factory halls, workshops, warehouses, in which no flammable or corrosive materials are stored. The housing of the luminaire is made of steel sheet and painted with varnish. Oprawa jest niehermetyzowana i jest …
SUSPENDED LUMINAIRES FOR FLUORESCENT OPF-240-1
Luminaires are intended for general lighting of industrial premises, factory halls, workshops, warehouses, in which there is no excessive moisture and dust. The housing of the luminaire and the reflector are made of varnished steel sheet. Oprawa jest przystosowana do …