What Is Armored Cable?

Armored cables are made of conductors made of different materials in metal sleeves with insulating materials, and are processed into flexible, flexible assemblies. Armored cables include armored thermocouples, armored thermal resistors, armored heaters, and armored leads. They are mainly used for temperature measurement, signal transmission, and special heating in chemical, metallurgy, machinery manufacturing, power generation, and scientific experiments. Are armored thermocouples.

The armor is divided into steel belt armor (22, 23), thin steel wire armor (32, 33), and thick steel wire armor (42, 43).

Steel tape armored cable models are VV22, VVP22, ZRVV22, NH-VV2;

Armored cable mechanical protection layer can be added to any structure of the cable to increase the mechanical strength of the cable and improve the ability to prevent corrosion. It is a wire and cable designed for areas subject to mechanical damage and extreme erosion. Can be laid in any way, more suitable for direct buried laying in rocky areas.

Armored cables are generally fixed power cables. Generally speaking, they are fixed in one place without moving, and power lines transmit electrical energy.

In addition to the above, the purpose of the cable plus the armor layer can also enhance mechanical protection such as tensile strength and compressive strength to extend the service life.

The armor has a certain resistance to external forces and can also prevent rat bites, which will not cause power transmission problems through the armor. The bending radius of the armor should be large, and the armor layer can be grounded to protect the cable.

basic requirements:

High compressive strength;

Small medium loss;

Good conductor connection;

high mechanical strength;

Reliable sealing, waterproof and submerged;

small volume;

Simple structure, easy to process. ^[1]

The price formula of armored cable series is as follows: copper weight x copper price calculation: wire diameter ÷ 2 = 1.25X1.25X3.14 = square number X number of wires X0.89X at that time copper price + 10% processing fee.

Cost price calculation of armored cable

Square X1.83 = weight of copper X copper price at that time + armor price (weight X 0.4 yuan / catty) = cost price + 10% processing fee

The price of the cable = cost of manufacturing materials + fixed costs + taxes + business fees + profit

Manufacturing material cost = material cost * (1 + material consumption) (material cost is the value calculated theoretically)

The fixed fee varies according to the situation of each company, and generally includes production wages, management wages, utilities, repair fees, depreciation fees, rents, and transportation costs.

The armored cable has a higher failure rate and the rubber sheathed cable has a lower failure rate. For armored cables, the causes of cable short-circuit failure are:

(1) When the cable is connected, the connection process of the end of the cable does not meet the quality requirements. The cable connection process must be followed. In particular, the insulation of the middle end must be handled properly. Moisture is not allowed to enter the critical connection to avoid affecting its insulation. .

(2) Cable armored steel tape has cracks, poor bonding, and lead wrap cracks have entered the moisture, especially in the cable, where the terminal wiring is weak, causing insulation damage and short-circuiting. Note that the bending radius of the cable must not be too small. Less than 20 times the outer diameter of the cable. ^[2]