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Company Name: Henan Xinchaoda Cable Co., Ltd.

Contact: Manager Guo

Mobile: 15038007773

Phone: 0371-63665188

0371-63775188

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Twisted pair

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Twisted pair

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  • Category: Household wires

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  • Release Date: 2018/08/16
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Detailed introduction

Elaborate:

Twisted pair is a transmission medium made of a pair or more of a pair of mutually insulated wires that are twisted together (usually wound counterclockwise) in accordance with a certain specification. Twisted-pair cables were used to transmit analog signals, but now they are also suitable for digital signals. Is a commonly used wiring information.

Twisted pair is a twisted pair of insulated metal wires. In this way, it can not only resist a local electromagnetic wave disturbance, but also reduce the mutual disturbance between multiple pairs of twisted wires. Two insulated wires are twisted together, and the disturbance signal acts on these two wires twisted together (the disturbance signal is called a common mode signal). The common mode can be used in a differential circuit that receives signals The signal is canceled to extract a useful signal (differential mode signal).


The insulated wires of any material of the overhead wires are twisted together. They can be called twisted pairs. The same cable can have one or more twisted pairs. Generally, two 22-26 single copper wires are intertwined. There are also multiple thick copper wires used to make a single insulated wire (this is related to the skin effect). In practice, the twisted pair is wrapped by multiple twisted pairs in an insulated cable sleeve. A typical twisted pair has one pair, there are four pairs, and there are more twisted pairs in a cable sleeve. These are called twisted pair cables. The length of a twisted twisted pair line is called the pitch. The smaller the pitch, the stronger the anti-interference ability.


Unshielded twisted pair cable has the following advantages

1. Unshielded jacket, small diameter, saving space and cost;

2. Light weight, easy to bend and easy to install;

3. Reduce or eliminate crosstalk;

4. Flame retardant

5. It has independence and sensitivity, and is suitable for structural integrated wiring.


RVSP copper core PVC insulated twisted copper wire shield connection flexible wire

The RVSP series adds a layer of copper wire shielding network to the base of the RVS, so it is more effective than the RVS series in increasing signal transmission loss and shielding external disturbance. The RVS series is much higher. It is often used in places where the transmission signal is required.


Technical goals:

Temporary allowable task temperature of PVC insulated cable does not exceed 70 ℃, the laying temperature of the cable should not be lower than 0 ℃, the outer diameter (D) is less than 25mm, the allowable bending radius of the cable should not be less than 4 times the outer diameter of the cable; (D) The allowable bending radius of a cable of 25mm and above should not be less than 6 times the outer diameter of the cable.


Commodity clarification:

This product is suitable for power, daily electrical appliances, instruments, meters, telecommunications equipment, lighting circuits, and fixed installations for automatic installation of additional voltages of 450 / 750V and below. With shielded wires, the flame retardant (ZR), high flame retardant (GZR), temperature resistant (90 ° C, 105 ° C, 200 ° C, 250 ° C), and High temperature, nylon sheath, refractory (NH), cross-linked (YJ) products.

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Keywords: overhead line

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