Forms and types of schemes and their purpose

Electric actuator generally consists of a number of elements. The main ones are any mechanism, such as machine tool, mechanical transmission to the engine due to this mechanism, the motor, ballast, protection equipment, signaling, automation.

According to GOST 2.701-68 by type of scheme are divided into electrical, hydraulic, pneumatic, kinematic and combined. To perform electrical drives, are mainly electrical circuits. However, depending on the nature of the electrical installation (various actuators line) in addition to the electrical circuit diagrams sometimes constitute other species, such as kinematic. If they are used for better understanding of the circuitry it is permitted to represent both types of circuits on a single drawing.

Schemes are divided into seven types: structural, functional, basic, compounds (mounting), connections (external wiring), and the general layout. The following schemes will be considered fundamental, joints and connections, both to get the most widely used in the electrical industry.

Schematic diagrams in practice divided into two types. One of them displays the primary (power) seti.i usually performed in one-line image.

Depending on the purpose of the drawing depict schemes:

a) Only mains circuit (power supply and off-line from them

b) Only the distribution network circuit (power-consuming equipment, lines of supply);

c) for small objects on the concept of supply chains combine image and distribution network.

Another type of concepts reflects the drive control, line, protection, blocking, alarm. Until the introduction of such schemes ESKD called elemental or deployed. Schematic diagrams of this type are performed each in a separate drawing or some of them are shown on the same drawing, it helps if the read circuit and slightly increases the size of the drawing. For example, on one drawing combine circuit control and overall automation and protection, measurement and control and the TP complete circuit diagram contains the electrical components and connections between them, which give a complete picture of the electrical principle of operation that allows you to read her chart.

Unlike the full concept of individual basic circuits operate products. Schematic diagram of the product, is usually part of a complete concept, the copy of the so-called it. For example, the concept of the control unit diagram depicts only those components that are installed in the control unit. From this circuit, of course, impossible to get an idea of ​​the power plant as a whole, and in this sense, the concepts are not amenable reading products. However, the concept of the product is quite clear that found in the product and which connections must be made within it, t. E. It is clear what needs to be the manufacturer of the product.

Wiring Diagrams (assembly) are designed to perform on them electrical connections within complex devices, elektrokonstruktsy, t. E. Compounds of devices with each other, devices with movable racks, etc.. Etc.. To the wiring diagrams are also schemes for which the connection within certain electrical systems, ie. e. its connected parts. An example of such a scheme may serve as a circuit diagram of the valve actuator.

Connection Diagrams (External connection diagram) are used for electrical connections between a wire, cable, and sometimes the tires. It is assumed that this electrical equipment territorially "scattered". Wiring diagram is performed, for example, the connections between the different Complex devices for connections between complex devices with separate power-consuming equipment and devices for connections between separate devices and a t. N.

K Wiring diagram also include connections between the various mounting blocks are part of a complete device, such as compounds within the control panel, exceeding the length of the size of 4 m (maximum mounting block, within which the manufacturer performs himself all the connections of 4 m).