Wiring duct,Cable Gland,Cable Tie,Terminals,RCCN

After entering the 1990s, the electronic control equipment industry has developed rapidly in recent years, and new products are emerging one after another. The product has not only made great progress in performance, structure and other aspects, but its appearance requirements are also getting higher and higher, and it is developing in the direction of furniture and decoration. The secondary circuit is an indispensable part of any electrical equipment. The electrical performance of the secondary circuit directly affects the performance, reliability and safety of the entire electrical equipment. At the same time, the assembly, labeling, wire selection, laying and arrangement of secondary components constitute an important part of the secondary circuit wiring process. The level of secondary wiring technology will have a direct impact on product quality. In the past, the company only focused on the structural design of the product and the improvement of electrical performance, while ignoring the secondary wiring work, resulting in the backward circuit of the secondary circuit, the method is outdated. In the new situation, the original secondary wiring process is far from being able to adapt to the needs of new product development and market development. Therefore, the use of new processes, new technologies, the use of appropriate new electrical accessories, etc., has become a very pressing issue.

basic requirements:

01. According to the drawings, the connection is correct.

02. The connection of the secondary line (including bolt connection, plugging, welding, etc.) should be firm and reliable. The wire harness should be horizontal and vertical, with firm configuration, clear layers and neat appearance. The installation position and wiring method of the control cabinet components of the same model and specification should be the same.

03. When wiring harness is used, the fixed wiring harness should be arranged horizontally and vertically and should be bundled and fixed. The spacing of the bundle should not be greater than 100mm, the fixed distance of the horizontal harness should not be greater than 300mm, and the fixed spacing of the vertical harness should not be greater than 400mm.
04. The line number reading of the same column device should be as consistent as possible. The conventions are from left to right, from bottom to top, from inside to outside. As shown below

05, secondary line cross-sectional area requirements:

Single stranded wire is not less than 1.5mm2

Multi-strand wire not less than 1.0mm2

Weak current circuit is not less than 0.5mm2

Current loop not less than 2.5mm2

Protective grounding wire is not less than 2.5mm2

06. There should be no connectors in the middle of all secondary circuit connecting wires. The connector can only be located on the terminal or terminal block of the device.

07. The contact point of each electrical component is allowed to connect up to 2 wires. The connection points of each terminal are generally not suitable for connecting two wires. In special cases, if two wires must be connected, the connection must be reliable.

08, the secondary line should be away from the arc-arc components, and must not hinder the operation of the electrical equipment.

09. The terminal between the ammeter and the shunt shall not pass through the terminal, and the line length shall not exceed 3 meters.

10. The current loop should be connected to the measuring instrument through the test terminal.

11. The end of the multi-strand wire should be connected with cold-pressed end. Single-strand conductors with a cross-sectional area of less than 1 mm2 in the weak current circuit shall be wired by soldering or other suitable means.
12, the secondary line must not pass through the bus line, as shown below:

13, the connection of the pull-back spring terminal:

1) Stripping length of hard wire: 10 mm or so

2) The soft wire should be put on the line and the nose is pressed and then inserted into the terminal. Note that the copper wire core should not expose the wire nose and be compacted.

 3) Qualified crimping

4) Failed 5) The wire is inserted into the terminal port until it is felt that the wire is inserted into the bottom, and the upper part cannot be exposed to copper.

14. Shielded cable connection

● Tighten the shield to a length of approximately 15 mm;

● Press the wire and the shield together with the wire nose;

● The pressed line is folded back on the outer layer of the insulated wire;

● The shielded wire is a single-ended grounding 15 that is fixed by a heat-shrinkable tube.