Matters needing attention in Cable installation

1. the mine cable parallel with heat pipe installation should keep a distance of 2m, when crossing, should keep 0.5m.
2. cable and other pipeline parallel or cross when installation should keep a distance of 0.5m.
3. cable directly buried installation, 1-35kv cable directly buried depth should not be less than 0.7m.
4. 10kv and below parallel cable installation of each interval is not less than 0.1m, 10-35kv is not less than 0.25m, cross when the distance is not less than 0.5m.
5. minimum bending radius of cable, multi cores cable shall not be less than 15D, single core cable shall not be less than 20D (diameter).
6. 6kv and above cable connector.
A. when installing cable terminal head, must stripped semiconduction shielding layer, operation shall not damage the insulation, should avoid to mark and uneven situation, when it is necessary to use sand paper to grind;Shielding end should level off, and I will clear out the layer of graphite.
B. plastic cable end copper shield and armor must be good grounding, also should follow the principle of short lines, avoid unbalanced three-phase run ShiGang armoured end produce inductive electromotive force, and even "lighter" and accidents such as burning sheath. Grounding lead in woven tin plated copper wire, copper strip and cable connections when applied iron soldering, unfavorable use blowtorches sealing, so as not to damage the insulation.
C. three-phase copper shield should be connected to the ground respectively, pay attention to the shielding grounding wire and steel armoured ground wire should elicit respectively, mutual insulation, the position of the welding ground should be lower as far as possible.
7. basic requirements for the cable end head and middle joint: A. conductor connection is good; B. insulation reliable, and recommends the type radiation crosslinked heat shrinkable silicone rubber insulation materials; C. good seal; D. enough mechanical strength, can adapt to various operation conditions.
8. cable end must be waterproof, and other corrosive materials, in case caused by the water tree insulation aging and lead to breakdown.
9. the loading and unloading of the cable must use a crane or forklift, the ban on flat, flat cable, large cable installation shall be used for cable car, in order to avoid cable damage by external forces or scratch insulation by artificial drag.
10. if cable cannot timely storage for some reason, should put it in a dry place, prevent sunlight insolate and cable end into water etc.

Difference between the power cable and control cable

Power cable in the trunk power system for electricity transmission and distribution functions, control cable from the power system of power distribution point to transmit electricity directly to various power connections of electrical equipment. Power cable of rated voltage up to and including 0.6/1 kv of above commonly, control cable is mainly for the 450/750v. The same specifications of the power cables and control cables in production, power cable insulation and sheath thickness thicker than the control cable.

Control cable belong to electrical equipment with cable, and power cable is a cable two of five categories. Standards of control cable is 9330, power cable GB12706 is the standard. The color of the control cable insulation wire core is usually white, black and low are generally color separation power cable.
Control cable cross section is generally not more than 10 square, power cable is mainly the power of that are generally large cross section. Due to the above all when it comes to the reason, the specifications of the power cable can generally larger, to 500 square feet, again big cross section, can do manufacturers is relatively less, and control the cross section of the flexible cable generally smaller, generally no more than 10 largest square. Some conclusions from the cable, power cable according to the request of power grid, most commonly for five core, and control cable transmission control signal, some more, according to the standard terms of more than 61 core, but also can produce according to user requirements.

Jiansu Yafei Wire & Cable Co., Ltd

Thermoplastic-insulated Wire Certified for Canada

Thermoplastic-insulated Wire Certified for Canada

USE
This category covers thermoplastic-insulated wire and cable rated 600 V and intended for use in accordance with CAN/CSA-C22.1, "Canadian Electrical Code, Part I."

PRODUCT TYPES
The wire and cable is designated as follows:
TW, TWU — Indicates a single-conductor, thermoplastic-insulated construction having ratings of 60°C wet or dry.
TW-75, TWU-75 — Indicates a single-conductor, thermoplastic-insulated construction having ratings of 75°C wet or dry.
T-90 NYLON — Indicates a single-conductor, thermoplastic-insulated, nylon-jacketed construction having a rating of 90°C dry.
TWN75 — Indicates a single-conductor, thermoplastic-insulated, nylon-jacketed construction having a rating of 75°C wet or dry.
SUBMERSIBLE PUMP CABLE — Indicates a 2, 3 or 4 conductor cable, with or without an overall jacket and bonding conductor, suitable for handling at -40°C.

Anytekabel Co.,ltd.
Jiansu Yafei Wire & Cable Co., Ltd

Technology development trend of fire retardant cable

With the increasingly popular of the information systems, it begins to enter all kinds of working environment and household, integrated wiring system has shifted from a new invention of twenty years ago to help people in daily life can be seen everywhere in the information system transmission cables. When people are able to complete high stability, high reliable integrated wiring system, whether the wiring system can resist external invasion and avoid harm becomes the new target of attention abroad.

The development trend of fire retardant cable
At present, the integrated wiring manufacturer has already entered the sales way of globalization, the integrated wiring manufacturer both have High flame retardant cable and low smoke zero halogen cable wire these two big series, and some manufacturers have already meet the requirements of low smoke zero halogen, and satisfies the requirement of high flame retardant cable. With the development of science and technology, technology is also constantly in arguments in the United States and Europe. Europe, for example, introduced more than a CMP EN 50289-4-11 standard strictly, and are establishing suitable for all kinds of cable standard of CPD series high flame retardant, high if match with low smoke halogen free cable, so can imagine: building cable in the future will not be easy to decompose, and even break down will not release large amounts of gas and smoke. It should be said that this is currently in the field of integrated wiring cable coveted goal.

Jiansu Yafei Wire & Cable Co., Ltd
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Purchase Knowledge of Home Application Wire and Cable

Wire surface marks according to the national standard, there should be factory name, product model and continuous symbol of rated voltage on the wire surface. This is good to use the electric wire when problems occur in the process, you can find the manufacturing factory in time, it is important for consumers to note this when choose and buy wire. At the same time, when purchase wire, consumers should pay attention to if the indicated on the certificate of cable manufacturer name, product model, rated voltage are consistent with printing marks on the surface of the wire, to prevent counterfeit products.

Wire appearance consumers should pay attention to the appearance of the wire when purchase wire, it should be smooth level off, the insulation and sheath layer without damage, logo printing is clear, no greasy feeling when touch the wire. See from the cross section of the wire, the entire circumference of the thickness of the insulation or sheath of the wire should be uniform, should not be partial core, the insulation or sheath should have a certain of thickness.

Conductor wire diameter consumers should pay attention if the conductor wire diameter consistent with certificate on express section when purchase wire. If the conductor cross section is small, it will be easy to make the wire hot and cause short circuit. We suggest family lighting wire use 1.5mm2 and above specification; Larger power household electrical cable appliances like air conditioners, microwave ovens should use wire with power of 2.5mm2 and above specifications.

Specification using the wiring should be regulated, fixed line had better use BV single core tube, attention in wiring, don't touch the wire, in the room don't touch bad when decorate wire; Don't joint in the middle route; Wires connected to the electrical box don't touch the line; Additional power consumption large household appliances such as air conditioning should separate all the wire power supply; Keep a certain distance between low voltage and high voltage cable wires.
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Servo motor control system cable

In recent years, the development and use of servo cable system is not only greatly improve the production efficiency of cable manufacturing but also for our enterprise has brought many convenient and save the cost. To develop a suitable factory production of excellent servo system is the problem all engaged in the manufacturing enterprise need to solve.

What is servo system, I believe most people slightly, but here I think it is necessary to make detailed interpretation for everybody. The servo system is used to precisely follow or a feedback control cable system in the process of repetition, also known as the servo system. In many cases, the amount of points to be controlled servo system is mechanical displacement or displacement velocity and acceleration feedback control system, its role is to make the output tracking input displacement mechanical displacement accurately.

At the same time, the structure of the servo system, and other forms of feedback control system there is no difference in principle. Servo system is first used in the automatic navigation of the ship, gun control, and the director, then gradually spread to many areas, especially in automatic lathe, the antenna position control, the guidance of missile and spacecraft, etc. The Servo motor cable system is mainly in order to achieve the following objectives: (1) with small power command signals to control the power load. Gun control and the rudder control is a typical example. (2) in the absence of mechanical connection, controlled by the input shaft is located in the output shaft, the distance the synchronous transmission. (3) the output mechanical displacement accurately tracking signals, such as records and indicating instrument, etc.

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The development of PV cable

In all types of solar cells, produce direct current (dc) and need to convert alternating current (ac). In recent ten years, the global solar power market growth, and photovoltaic cable is not gb standard, so can reference standard and test, need to adjust, especially should pay attention to the cable long exposure to strong ultraviolet rays of ageing problems.

PV cable are often exposed to sunlight, the solar energy system is often used in harsh environment conditions, such as high temperature and ultraviolet (uv) radiation. In Europe, sunny days will result in the solar system in the field temperature as high as 100 °C. At present, we can use all kinds of material with PVC, rubber, TPE and cross-linked with high quality material, but unfortunately the rated temperature of 90 °C rubber cable, and even the temperature of 70 °C rated PVC cable is also often used outdoors, the national golden sun project horse, there are many contractors in order to save costs, not to choose cable specially used for solar system, choosing instead to replace the ordinary PVC cable photovoltaic cable, obviously, this will greatly affect the service life of the system.

The characteristics of photovoltaic cable is by its special cable insulation and sheath material, we call it a crosslinked PE, after irradiation accelerator irradiation, the molecular structure of the cable material will change, providing the aspects of performance. Mechanical load, in fact, during the period of installation and maintenance, cable can be on the edge of the roof structure of sharp wiring, cable at the same time must be under pressure, bending, tension, cross tensile load and strong impact. If the cable sheath strength is not enough, the cable insulation layer will be seriously damaged, which affects the service life of the whole cable, or cause a short-circuit, fires and injuries and other issues.

Wire and cable braiding

Wire and cable is mainly composed of conductive wire core, insulation, sheath layer, the three basic structure elements. There is no strict boundaries difference between the wire and cable, but speaking from a broad meaning, cable structure is complex, it has complex sheath layer, and some only conductor and insulation wire structure is simple, some only braid light armor layer or coating a layer of light soft armor layer. The conductive wire core wire and cable is used for the transmission of current. To reduce the power loss and voltage drop, conducting wire core general selection of high conductivity copper and aluminum. The role of the insulating layer is to prevent the current along the radial leakage, ensure use safety. Therefore, insulation required to have good electrical insulating properties, heat resistance and mechanical strength.

Outside the insulated wire core or a cable core protection layer called the sheath of the cable. Main function is to protect the insulation sheath. Its main performance is moistureproof, prevent oil, anti-corrosion, Anti aging, sun fire resistant, as well as mechanical protection. It sustain tension, knock against, but also has the electric and magnetic resistance etc. From the perspective of cable sheath, weaving is many kinds of wire and cable sheath or one of the outer sheath. However, according to the materials used in wire and cable braid and different parts in the structure of wire and cable, the role of the braid is obviously different.

For wire, fiber braid is a form of the light cover. Its main function is to protect the insulation is not affected by or less by all kinds of light, heat, moisture, low temperature, acid and alkali gases such as erosion and external mechanical force damage, ensure the safety of the electric wire. For the cable, fiber braid is often in the middle of the protective layer, so as to gain strong protective layer of the tear strength, such as enhanced sheath is in the middle of the rubber or plastic sheath in cotton yarn, hemp fiber braid, in order to improve the strength of the sheath. Metal braided layer are mainly copper braid and wire woven layer.

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