High voltage wires on exterior telephone poles are bare wire and stranded steel-core aluminum wire. Armored cables used for outdoor buried cables include aluminum wires and copper wires. The cable insulation material is high-quality silicone material, commonly known as semiconductor material. High voltage There are still aluminum wires, but this year the national electricity grid was renovated and replaced with copper. Typically, copper is used for indoor use, but aluminum was also used before the 1980s. That is to say, the copper core in the middle is unique.
Additional:
High Voltage Neon Light Wire - Rated AC Voltage GTO-10 10,000V, 150°C.
Complies with American UL814 standards for gas lamps and ignition wires.
The GTO-10 conductor is a high resistance electrolytic copper wireance (ETP), tinned, a multi-conductor stranded wire, American standard 18 gauge.
Meets the sheathing requirements required by the UL814 standard.
Using high-quality silicone material, it is strong and versatile, providing superior fire protection, ozone resistance, UV protection and corona resistance.
Temperature resistance: -75°F to +500°F (Fahrenheit).
Excellent electrical properties including ultra-low insulation fatigue and long life ultra-long in extreme temperature conditions. lifetime.
Currently available in black and white
What are the uses and installation of armored cables?
There are obvious differences between armored cables and unarmored cables in terms of structure, scope of application and use.
Construction: The main difference between the two is that armored cables add a layer of reinforcementmetal outside the metal casing made of insulating material, while unarmored cables do not have this reinforcing layer.
Scope of application: Since the surface of the armored cable has a reinforcement layer, it is more suitable for use in environments where it is buried underground or must resist external mechanical forces important. There is no reinforcing layer on the surface of unarmored cables, so they generally cannot be buried. However, in other circumstances, such as simple indoor or overhead installation, unarmored cables may be used.
Usage: Armored cables are primarily used for underground burial and are suitable for direct burial and laying in situations where significant external mechanical forces must be withstood. Unarmored cables cannot be used underground and are mainly used in other situations.ons that do not need to resist significant external mechanical forces.
In general, the choice of cable to use should be determined based on the scenario and the actual needs of the application.
1. The mechanical protection layer of armored cables can be added to cables of any structure to increase the mechanical strength of the cable and improve its anti-corrosion ability. for cables susceptible to mechanical damage and Wires and cables designed for areas highly susceptible to erosion.
2. It can be laid in any way and is most suitable for direct burial in rocky areas.
Shielded cables are generally fixed-lay electrical cables. Generally speaking, they are fixed in one place and hardly move. Power lines transmit electrical energy. In addition to the above objectives, adding a layer of armor to a cable can also improve themechanical protection such as tensile and compressive strength and extend its service life.
The armor has a certain resistance to external forces and can also prevent mice from biting, so as not to cause problems with power transmission through the armor. The radius of curvature of the armor must be large and the armor. The layer can be grounded and protected.
Detailed information:
The failure rate of armored cables is higher and the failure rate of rubber sheathed cables The rate is low. For armored cables, the reasons for cable failure are:
1. When wiring the cable, the cable terminal wiring process does not meet the quality. The requirements and requirements of the cable wiring process must be met. Pay special attention to the insulation of the center end and do not allow humidity penetrate key connections to avoid affecting insulation.
2. Cracks in the cable's armored steel strips, poor overlap, and cracks in the lead sheath can cause moisture to enter, especially in the weak links at the end of the cable, which can damage the cable. insulation. and cause a short circuit. Pay attention to the bend radius of the cable. It should not be too small and should not be less than 20 times the outer diameter of the cable.
Common cable applications:
1. Power system: Wire and cable products used in power systems mainly include overhead bare wires, bus bars (bus bars), power cables (plastic cables, oil paper power cables ( mainly replaced by plastic power cables), rubber sheathed cables, insulated overhead cables), drop cablesn (replacing certain busbars), electromagnetic wires and electrical equipment wires and cables for electrical equipment, etc.
2. Information transmission: Wires and cables used in information transmission systems mainly include local telephone cables, television cables, electronic cables, radio frequency cables, optical fiber cables, data cables, Electromagnetic wires, electrical communication cables or other composite cables are waiting.
3. Instrument system: Except for overhead bare wires, almost all other products in this part are applied, but mainly power cables, electromagnetic wires, data cables, instrument cables, etc.
Baidu Encyclopedia - Armored cable