This standard applies to the marking of insulated conductors used in industrial complete sets of equipment and their component equipment (devices). Exceptions include insulated conductors at the terminals of electrical appliances such as rotating electrical machines and transformers. Other equipment (such as telecommunications circuits or circuits containing telecommunications equipment) are for reference only. The purpose of this standard is to specify a marking identification system for insulated conductors, which is divided into two categories: primary marking and supplementary marking. The purpose of marking insulated conductors is to provide a means of identifying conductors in a circuit and conductors that have been removed from the terminals to which they are connected. This standard is equivalent to the international standard IEC 391 (first edition in 1972). GB 4884-1985 Marking of insulated conductors GB4884-1985 Standard download and decompression password: www.bzxz.net

National Standard of the People's Republic of China
Marking of insulated conductors
Marking of insulated conductorsUDC 621.315.3
77
GB4884—85
This standard is applicable to industry Marking of insulated conductors used in complete equipment and equipment (devices) of which it is a component. Exceptions include insulated conductors from the terminals of electrical appliances such as rotating electrical machines and transformers. Other equipment (such as telecommunications circuits or circuits containing telecommunications equipment) are for reference only. The purpose of this standard is to specify a marking identification system for insulated conductors, which is divided into two categories: primary marking and supplementary marking. The purpose of marking insulated conductors is to provide a means of identifying conductors in a circuit and conductors that have been removed from the terminals to which they are connected.
This standard is equivalent to the international standard IEC391 (first edition in 1972). 1 Definition
The terms used in this standard have the following meanings: 1.1 Terminal
Conductive parts used to connect devices and external wires. 1.2 Terminal board terminalboard
A plate, block or strip equipped with multiple terminals that are insulated from each other and usually insulated from the ground. 1.3 Identification mark Identification mark is marked on both ends of the wire or wire harness. If necessary, it is marked on the visible part of the entire length to identify the mark of the wire or wire harness. 2 Types of Marking Systems
2.1 Primary Marking
A marking system that only marks the characteristics of a wire or harness without considering its electrical function. 2.1.1 Subordinate marking
A marking system for wires or wire harnesses based on the marking of the terminal to which the wire is connected or the marking of the equipment to which the wire harness is connected. a. Slave local marking
For conductors:
A marking system in which the marking of the conductor terminal is the same as the marking of the terminal to which it is connected. For wire harnesses:
A marking system for marking the terminals of a wire harness to identify the components of the equipment to which they are connected. b. Dependent remote marking
For a conductor:
A marking system in which the end of the conductor is marked the same as the terminal to which the far end is connected. Adoption instructions:
Made editorial changes to the first three chapters of the international standard IEC391 "Marking of Insulated Conductors" (1972), combining Chapters 1 and 2 into the introduction of this standard, and Chapter 3 is divided into Chapter 2 serves as Chapter 1 and Chapter 2 of this standard. Differences in adoption: This standard does not include the content in Article 6.2 of the international standard 1EC391 (1972) about using the hour (clock dial) digital system to mark the phase; for the content in Article 6.4, it is based on GB4026-83 "Electrical Terminals" The markings of "protective conductor", "ungrounded protective conductor", "grounding wire", "protective conductor and neutral wire share the same line" specified in "General Principles for the Identification and Marking of Terminals with Alphanumeric Symbols". Released by the National Bureau of Standards on 1985-02-04
Implemented on 1985-09-01
For wire harnesses:
GB4884-85
The mark of the wire harness terminal marks the remote location A marking system for parts of connected equipment. c. Marking of slave ends
For conductors:
Each end of the conductor is marked with a terminal mark connected to the local end and a terminal mark connected to the remote end. For wire harnesses:
The markings on each end of the wire harness identify parts of the equipment connected to the local end and parts of the equipment connected to the far end. 2.1.2 Independent Marking
A marking system for wires or wire harnesses that is independent of the marking of the terminals to which the wires are connected or the marking of the equipment to which the wire harness is connected. 2.1.3 Combined tag
A tag system used together with dependent tags and independent tags. 2.2·Supplementary marking
is generally used as a supplement to the main marking and is a marking system based on the electrical function of each wire or harness. a. Functional marking
Supplementary marking that considers the function of each conductor separately (for example: closing or opening of a switch, indication of position, measurement of current and voltage), or considers the functions of several conductors together ( For example: Supplementary markings for heating, lighting, signaling, measuring circuits). b. Phase mark
A supplementary mark indicating that the conductor is connected to a certain phase of the AC system. c. Polarity mark
A supplementary mark indicating the polarity of a conductor connected to a DC circuit. 3 General
3.1 The identification mark must be marked on both ends of the conductor, and if necessary, on the visible part of the entire length of the conductor. 3.2 The primary marking must be of the type specified in clause 2.1 - 3.3 Conductors may bear supplementary markings specified in clause 2.2. In some cases, when the supplementary mark is sufficient for identification, the main mark may not be needed.
4 Application of the primary marking system
4.1 Subordinate marking
In the subordinate marking (clause 2.1.1), the conductor marking may be included (Figure 2 and Figure 4) or not Include (Figure 1 and Figure 3) equipment markings, but when using terminal markings alone would cause confusion (Figure 2), conductor markings must include equipment markings. 4.1.1 Slave terminal markings (clause 2.1.1 c) The system shown in Figures 1 and 2 does not require reference to a wiring diagram or table to connect the conductor to the local terminal, and the remote terminal is also shown , thus making it easier to determine the fault point and repair it.
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4.2 independent mark
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Wire 6 connects A3 and D2.
GB4884-85
Note: It is up to the user to decide whether to use the wiring diagram or wiring table. When a functional marker is sufficiently identifiable, it can be used as a stand-alone marker without the need for additional markers (Article 3.3, Figure 6). o
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4.3 Combination Marks
Combination Marks (Chapter 2.1.3 models, Figure 7, Figure 8, Figure 9) have the advantage of slave markings and allow the simplification of intermediate markings that may be required on the conductors.
If the slave markings are incomplete and not marked on both ends of the wire, a wiring diagram or wiring table may be required. 6
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Example of combined marking for wire independent marking and wire harness (cable) slave marking Figure 8
End marking
If a wiring table is used, the wiring table It should be shown that wire 5 connects A1 and D1, and
wire 6 connects A3 and D2.
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Figure 9 Example of combined marking of wire dependent ends and harness (cable) independent marking
If a wiring table is used, the wiring table should Indicate: Wire harness (cable) 15 connects terminal boards A and D. 5 Supplementary mark
The supplementary mark (Article 2.2) is the same as the main mark and can be letters or numbers. Color coding or appropriate symbols may also be used. In some cases, to avoid confusion, it is better to separate supplementary tags from primary tags with a symbol (such as a slash /). 5.1 Functional Markings
If functional markings (Article 2.2a) are used, they should be consistent with current national standards, or their meanings should be listed in a table. 5.2 Phase mark
The phase mark (Article 2.2b) uses capital letters or numbers or both to indicate the phase sequence. The neutral wire in an AC system must be designated with the letter N. Note: If confusion is possible, the number or letter used to designate the phase should be placed between two slashes (e.g. /8/). 5.3 Polarity Marking
When using symbols to indicate the polarity of DC circuit conductors (Article 2.2c), the following markings should be used: + for positive poles
for negative poles, and
for DC systems The middle line of is marked with the letter M. Note: If there is a possibility of confusion between the negative electrode mark and the hyphen, the negative electrode mark should be represented by a hyphen "(a)" placed in parentheses. 5.4 Marking of protective conductors and grounding wires
Use PE for protective conductors;
Use PU for ungrounded protective conductors;
Use E for grounding wires,
Use E for protective conductors and neutral Use PEN for a shared linear line. Note: This article is based on GB4026. 6 Arrangement of Markers
If the mark consists of different components, use the following methods to distinguish each part. 6.1
8, use a spacer, or an appropriate symbol, such as a hyphen; b. Use different printing fonts;
c. Use the arrangement method (see Article 6.2). 6.2 The different parts that make up the mark should be expressed in one of the following two ways: a. Along the axis of the conductor (longitudinal marking), b.
crosses the axis of the conductor (transverse marking). In any case, words should be arranged to facilitate reading. They can be arranged in columns or rows (see Figure 10) and should go from top to bottom and left to right.
Relative position of 7 markers
7.1 subordinate markers
GB488485
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Longitudinal markers in a row
Vertical markings in one column
Horizontal markings in a row
Horizontal markings in a row
Example of marking arrangement on a wire or harness (cable) Figure 10
7.1 .1 The subordinate tags (local tags or remote tags) should be marked in the following order: corresponding terminal tags;
supplementary tags (when necessary)
as shown in Figure 11.
(see Chapter 5).
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Marking for the other terminal.
(see Chapter 5)
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7.2 Independent marking
The order of independent marking is as follows:
Identification mark of the conductor,
Supplementary mark (if necessary )
(see Chapter 5).
As shown in Figure 13:
7.3 combination mark
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The combined marking sequence of the conductors is as follows:
Marking of one of the two terminals;
Independent marking of the conductor;
16/S
GB.4884 -85
Figure 13 independent mark
16.S
16 - identification mark of the conductor, S - supplementary mark supplementary mark (when needed) (see Chapter 5), another Marking of the terminal (in the case of marking on both ends of the slave). Figure 14 gives four examples:
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c both end mark (same mark on both ends)
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d mark on both ends (different marks on both ends)
Figure 14 Example of combination mark
16 Identification mark of one conductor , S a supplementary mark o1
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Note: In some cases, it may be appropriate to make additional requirements on the order of symbols. For example, in a dependent double-ended tag, the local The terminal markings are placed close to the ends of the wires (see Figure 12b). 8 The font used
GB4884-85
marks should use uppercase letters and Arabic numerals as much as possible, or use standard graphic symbols. For subordinate markings, the same font as the terminal markings should be used wherever possible. 9 The markings on the wires (or wiring harness) are marked on the wiring diagram 9.1. When marking a conductor on a diagram (as shown in the above figures), the mark should be placed close to the graphical symbol of the conductor. 9.2 When slave two-end marking is used, the marking sequence at both ends of the conductor must be consistent with that on the wiring diagram and on the conductor. 9.3 Supplementary marks according to their functions can be:
8. Only marked on the wiring diagram;,
b. Marked only on some conductors or all conductors; c. Labeled on wiring diagrams and conductors.
Additional notes:
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and is under the jurisdiction of the Institute of Standardization of the Ministry of Machinery Industry. This standard is drafted by the Institute of Standardization of the Ministry of Machinery Industry. The drafters of this standard are Yang Ying and Han Jin.
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