The automobile wiring harness is the main body of the automobile circuit, which connects the electrical and electronic components of the automobile. And make the automotive parts collaborative work. The wiring harnesses play a role in connecting those devices and delivering electricity and signals through the entire car. The functions are similar to the blood vessels and nerves of a human body. Harness protection is a must, it is very important to choose the right cable wrap.

At present, the form of wire harness is basically the same whether it is a high-end luxury car or an economical ordinary car. Then the application of cable sleeve on automotive wiring harness has increased.

It is composed of wires, connectors and wrapping tape. It must ensure the transmission of electrical signals and the connection of circuits. Reliability, supply specified current values to electrical and electronic components, prevent electromagnetic interference to surrounding circuits, and eliminate electrical short circuits. So there are more considerations for harness wrap selection.

As powerful electrical systems operate vehicles, cable and wire harnesses will become more important than ever.The automotive harness is functionally divided into a power line carrying the actuator and a signal line transmitting the sensor input command. The power line is a thick wire that carries a large current, and the signal line is a fine wire optical fiber communication that does not carry power; for example, a signal circuit has a wire cross-sectional area of 0.3, 0.5 mm 2 . The choice of wires, in addition to considering the electrical performance, is also subject to the physical properties of the vehicle, so the choice is very wide.

1, Corrugated flexible conduit is a plastic pipe molded from PE, PA or PP. Superior flame retardancy makes it a necessary cable harness wrap.

bowen automotive

 

Material: PE/PA/PP

Opearting range: -40 —- +130℃

Colors: Black, Gray, White, Red, etc.

Features: Resistant to abrasion, acids, solvents and fuel.

As we all know, the car is in the whole process of running, the place with higher temperature is the engine except the tire. The PP plastic used for the engine is a very special metal material. It used around it is also relatively high. The material must have a certain flame retardancy and a high light-off temperature to prevent fire.

Firstly, the flame retardant PP corrugated flexible conduit has a relatively high melting point. The halogen-free PP has good flame retardant properties and has a high light-off temperature, which can reach above 850 °C, so even if the temperature of the engine is high, it will not cause fires reduce the probability of accidents.

Secondly, the PP corrugated flexible tube has a low thermal conductivity. Although the engine temperature is too high, it will not affect the normal operation of other surrounding components, and will not adversely affect the operation of the automobile.

2, Self-closing wrap, is an non-expandable sleeving, made of polyester yarns monofilament and multifilament. The open type design is very easy to install and disassemble. Moreover, it has excellent wear resistance and provides good protection for the wire harness at the bending activity.

self-closing wrap

Material: polyester monofilament and multifilament

Opearting range: -50 —- +150℃

Colors: Black, Red, etc.

Features: light weight, cost effective and abrasion, and the split open design allows the sleeving to be easily installed on cable harnesses that have been assembled.

3, Braided self-closed wrap is woven from PET monofilament, then self-roll forming. The self-rolling coincidence degree is about 25%. It combines protection and flame retardancy while having excellent heat dissipation. It is a high temperature component peripheral guard.

braided-self-closing-wrap-196x300

 

Material: polyester monofilament

Opearting range: -50 —- +150℃

Colors: Black

Features: wear-resistant, flame retardant, easy to install and removed.

4, Dual wall adhesive heat shrink tubing is made of polyethylene on the outer layer, and a hot melt adhesive on the inner layer. It snugly around wires and smooths out rough surfaces, providing thermal and electrical insulation. Adhesive-backed tubing provides a strong seal against moisture and chemicals that can corrode harness components. Requires a heat gun to apply, which adds to production time. It can also be difficult to apply to an entire harness.

heat shrinkable tube ateeto

 

Material: polyethylene and hot melting adhesive

Shrink rato: 3:1 or 4:1

Working temperature: -45 —- +125℃

Colors: Black

Features: The tube shrinkage, the inner layer will melt and adhesive wire harness after being heated.

5, Cable sleeving is polyester braided sleeve, woven from polyester monofilament. It’s used to cover cable, wire harnesses tubes, industrial hoses where is required an good mechanical protection, automotive. Full flexibility is maintained in any direction, even at low temperatures. Cable assemblies and wire bundles can be flexed repeatedly without damage.

sleeving ateeto

 

 

Material: polyester monofilament

Opearting range: -50 —- +150℃

Colors: Black, gray, white, red, green, blue, yellow, purple, pink, orange, nacarat, etc.

Features: Good flexibility, unity – Excellent chemical resistance – Self-extinguish – Easy to be applied – Light weight / Thin thickness – Good appearance – Closely contacted to bent part.

6, Fiberglass sleeving is made of fiberglass braided sleeve. It has an outstanding temperatures dassification of 200℃.The sleeve has a wide temperature range and high voltage resistance. It is a very good choice for generators and motor peripherals.

fiberglass sleeving

 

Material: fiberglass

Coating material: Silicone resin

Working temperature: -60 —- +200℃

Breakdown voltage: 1.5KV — 4KV

Flammability: VW-1

Color: White

Features: self-extinguishing feature and excellent flexibility.

Cable harness protection is available in multiple configurations based on factors such as color, material and size. Each option provides different pros and cons that engineers must consider.