JB/T 10084.1-1999 Principles for drawing wiring diagrams for power station equipment automation devices JB/T10084.1-1999 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Automation Devices of Power Plant Equipment
Principles for Drawing Wiring Diagrams
Scope of Application
This standard is formulated with reference to IEC113--6 "Drawing of Equipment Wiring Diagrams and Tables". This standard is applicable to drawing internal wiring diagrams and wiring tables of power plant equipment automation devices. This standard is not applicable to drawing printed circuits. Purpose of Drawing Wiring Diagrams
JB/T10084.1-1999
Replaces ZBN19001-88
The wiring diagram is to provide standard information for the internal electrical connection and component installation of power plant equipment automation devices or their units. It is used for manufacturing wiring, inspection and maintenance of power plant equipment automation devices or their units. In practical applications, wiring diagrams are usually used together with circuit diagrams and location diagrams, or they can be used alone. 3 Principles for Drawing Wiring Diagrams
3.1 Front Location Diagram
Before drawing the wiring diagram, the front location diagram should be clarified first. The so-called front position diagram is a front view of the device, component or unit arranged according to the actual position. The order of arrangement of items in the front position diagram is generally stipulated to be arranged from left to right and from top to bottom, as shown in Figure 1. 11
3.2 Front wiring diagram
The front wiring diagram is also called the front wiring diagram. The wiring surface is the front of the front position diagram, and the arrangement order of items is the same as the front position diagram, that is, from left to right and from top to bottom, as shown in Figures 4 and 5. "Front wiring diagram" should be indicated in the title bar of the drawing. Approved by the State Bureau of Machinery Industry on April 5, 1999
Implementation on April 5, 1999
3.3 Back wiring diagram
JB/T10084.1-1999
The back wiring diagram is also called the back wiring diagram. The wiring surface is the back of the front position diagram. The arrangement order of the items is opposite to that of the front position diagram, that is, from right to left and from top to bottom, see Figure 8. "Back wiring diagram" should be indicated in the title bar of the drawing. 3.4 Layout
The wiring diagram is represented by a diagram, table or a combination of diagram and table. The wiring diagram should be drawn according to the actual position or approximate actual position, and should indicate the project code, terminal number, wire number, shielding (if any), and the wire model and cross-sectional area. The markings of the project code, terminal number, wire number, etc. of the wiring diagram must be consistent with the markings of the circuit diagram and technical documents.
3.5 View
The required view of the wiring diagram (from the wiring surface) should clearly show the terminals and wiring surfaces of the devices, components, and units installed on the wiring surface. In general, one view of the wiring surface can meet the requirements. If the wiring is double-sided (front and back), two views are required.
When the items have multiple layers of terminals or the items are placed in several layers on top of each other, the terminals of these items can be shown on the drawing and explained by flipping or shifting. Figure 2 shows a welding terminal board, which is what is seen after the terminal board in the device is turned 90° to the left. The long line on the right represents the turned axis.
The part to the right of the dotted line in Figure 7 is the component wiring on the pivot panel in front of the bracket, which is represented by displacement. Figure 2
3.6 Representation of items
Each item (device, component, unit, assembly and device) in the wiring diagram should be represented by a simplified outline (square, rectangle, circle, etc.). Graphic symbols can also be used when necessary. 3:7 Representation of terminals
The number of wires connected to each wiring point of the terminal shall not exceed two. Terminals are usually represented by graphic symbols. When representing terminals on the frame line, terminal symbols can be omitted, and only terminal codes can be used, as shown in Figure 3. The terminal codes are marked in the frame.
Terminals that are frequently disassembled are represented by circles or simplified outlines, and the terminal codes are marked near them. Terminals that are not allowed to be disassembled and terminals with fixed connections are represented by dots, and the terminal codes are marked near the dots. 3.8 Indicated by continuous lines
JB/T10084.1-1999
In simple wiring diagrams, the connection between devices or units is indicated by continuous lines, see Figure 4. If the connection line is twisted or shielded, it should be clearly indicated. The symbols on the wires 44 and 45, 46 and 47 in the figure indicate twisting. Figure 3
111213
3.9 Indicated by interrupted lines
JB/T10084.1-1999
In more complex wiring diagrams, the connection between devices or units is indicated by interrupted lines. The direction of the interrupted lines must be marked at the interruption point, see Figure 5. For example, 36_11 of X1 (terminal board code) means that line 36 is connected to device No. 11, and X136_ of device No. 11 means that line 36 is connected to X1.
3.10·Representation by wire groups
1.2224455555.55
2311121
Grouped wires or cable harnesses can be represented by a common line, as shown in Figure 6 (a); or the number of wires can be represented, as shown in Figure 6 (b). (a)
If a unit includes several wire groups or cable harnesses, they should be clearly distinguished. The unit wiring diagram shown in Figure 7 is divided into two groups of cable harnesses, A and B. The lines representing the harness should be drawn thicker. The wire numbers should be marked on each wire connected to the harness to facilitate reading the diagram. 128
1922390956
288813
JB/T10084.1-1999
10) 24
Component wiring on the pivot panel in front of the bracket.
For wiring diagrams with simple wiring and fewer terminals, the prefix symbol of the terminal can be left unmarked, as shown in Figure 5. For wiring diagrams with complex wiring and more terminals, the prefix symbol of the terminal should be marked to be clear and easy to identify, as shown in Figure 8. 129
Wire color
4.1 Green and yellow two-color wire
JB/T10084.1-1999
Green and yellow two-color combination wires are only used to indicate protective wires and cannot be used for other purposes. In other words, the protective wire must use a green and yellow two-color combination wire and cannot use wires of other colors. 4.2. Light blue wire
Light blue wire is only used to indicate the neutral wire of AC system or the middle wire of DC system, and cannot be used to indicate other wires. In other words, the neutral wire of AC system or the middle wire of DC system must use light blue wire, and other colors of wires cannot be used. 4'3 Black wire and brown wire
In general, the internal wiring of devices, components, units or equipment only uses one color, black or brown, and black is recommended. In order to distinguish the wiring of different units, several additional colors can be added, that is, different units use wires of different colors. 4.4 Other color wires
In order to meet the needs of manufacturing wiring and fault maintenance, each line can use wires of other colors or wires of other color combinations, see Figure 7; but the provisions of Article 4.3 are preferred. 5 Wiring table
Wiring diagrams can be easily represented by wiring tables, especially complex wiring diagrams, which are more convenient to use wiring tables than wiring diagrams. The contents of the wiring table include cable number, line number, cable (wire) model and specification, connection point and its project code and terminal number, other instructions, etc. Table 1 is an example of using a wiring table to represent Figure 4. The symbols T1 and T2 in the wiring table indicate that the wires are twisted. The short dash in the wire number column indicates that the connection is realized by the component itself. 130
Wire number
Additional instructions:
Cable model and specification
JB/T10084.1-1999
Project code
Terminal number
This standard is proposed and managed by the Acheng Power Plant Equipment Automation Design Institute. This standard was drafted by the Acheng Power Plant Equipment Automation Design Institute. The main drafter of this standard: Hu Jinghe.
Contact II
Project codebzxz.net
Terminal number
Note: This standard was originally a professional standard of the People's Republic of China. The standard number is: ZBN19001-88. After rectification by the national competent authorities, it was adjusted to the machinery industry standard and confirmed to be valid after review. The standard number was adjusted to JB/T10084.1-1999. The technical content of this standard has not been modified. 131.
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