In front of the terminal marked serial number, every five cells marked a number 5, 10, 15, 20.
1, the alphanumeric system consists of uppercase orthographic Latin letters and Arabic numerals.?
2, marking the letters of the DC components from the first half of the alphabet that is A to M in the selection, marking the letters of the AC components from the second half of the alphabet that is N to Z in the selection. The letters "I" and "O" cannot be used, and the symbols "+" and "-" can be used.
3. It is permissible to omit some parts of the complete alphanumeric symbols specified in Article 5.2 when there is no confusion.
Terminal marking is based on the following principles:
1. The two terminals of a single component are distinguished by two consecutive digits, with the odd digit being smaller than the even digit, e.g., 1 and 2.
2. The intermediate terminals of a single component are distinguished by a numerical digit, preferably in the order of a natural ascending number. For example: 3, 4, 5 and so on. In the middle of the terminals of the digital selection is greater than the number of terminals on both sides, and should be close to the smaller number of terminals at the beginning of the sign, for example, a terminal on both sides of the 1 and 2 components in the middle of the terminals with 3, 4, 5 and other digital sign.
EXTENDED INFORMATIONEquipment wiring terminals and specific wire ends can be identified using one or more of the following methods.
The actual or relative position of equipment terminals or specific wire ends is determined and identified using the marking system of the relevant product.
Using the relevant product marking system to determine and identify the color marking of equipment terminals and specific wire ends.
Adopt the graphic symbols specified in GB5465. If auxiliary symbols are required, they should be consistent with the graphics in GB4728.
Adopt the alphanumeric symbols specified in chapter 5 of this standard.
Baidu Encyclopedia - Terminal Block