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Wires And Cables

August 12, 2017 18:07

Types , characteristics and differences wires SIP

Many saw the picture on the Internet, "the Chinese electrician" and laughed at the poor fellow with a huge garland cables.We take a closer look.This CIP, which replaced the outdated overhead power line, where the wires were attached to the centers and spreads to the sides in order to avoid overlap and short circuit.The new system is devoid of such shortcomings, each core is covered with insulation, and are joined together into a single structure.For installation of such cable does not require special poles with insulators and supports can be placed at a greater distance, there is no such thing as an overlap of wires in the wind.It is used in networks up to 35 thousand volts, for the electrification of houses, street lighting and other needs.Consider the purpose and the basic specifications CIP.

  • How stands
  • design
  • Terms laying
  • Scope
  • Manufacturers

How stands

First of all it should be noted that the transcript CIP marking is as followsway:

  • C - self-supporting;
  • And - isolated;
  • P - wire.

Please note that according to the acronym is still the wire, not the cable, how many believe it.

I would also like to note that the prefix "A" at the end labeling (eg, SIP-1A), said that the neutral conductor is covered with insulation.The prefix "n" in turn means that the conductors are made of aluminum alloy, and the letter "t" to the end mark indicates that the insulation is resistant to high temperature + 90 ° C (+ 120 ° shortly C).


Before you consider SIW device, I would like to say that today there are the following brands conductor: STS-1, 1A, 2, 2A, 3, -3, -4, -5.Types and differences of each brand, we now provide.

STS-1 to produce a network of 380 V. It is a four-cable made of aluminum or aluminum alloy, three cores are covered with lightfast polyethylene, UV resistant, and the fourth without braiding with steel core, and serves as a carrier neutral.

STS - 1

have SIP-2 wires are insulated, carrier, including.

STS - 2

SIP-3 - is a solid steel-aluminum cable with a sheath of cross-linked stabilized polyethylene.

STS - 3

have SIP-4, all four cores are insulated thermoplastic light-stabilized polyethylene, but there is no separate carrier lived.


SIP-5 also has a separate carrier core, the rest covered with a shell of crosslinked polyethylene, the number of live two or more.

STS - 5

The technical characteristics of CIP-1, STS-2, STS-4 and STS-5 are designed for rated voltage up to 1 kV, STS-3 to 35 kV.

Of the other options I would like to highlight:

  • operating temperature range from -60 to + 50 ° C;
  • climatic version UHL (moderately cold climate);
  • line installation is possible at -10 degrees Celsius;
  • warranty period of 5 years;
  • claimed the life of at least 45 years.

More Features SIP, such as minimum bend radius, resistance, current-carrying capacity, mass and cross section, refer to the tables:

Main settings

STS - 1/1 -A

Table of sections STS - 3

resistance lived

Terms laying

wiringIt requires no special skills.With the help of accessories and installation, to deal with that almost any person acquainted with the rules.



We will provide an overview of the surface mount self-supporting insulated wire.On special metal support brackets for scrapie installed anchors that will hold special clips.CIP plant on the supports by pulling pre-installed on poles reeling rollers, with a protective layer of plastic to prevent damage to the insulation of the cable and stretches previously lodged rope stretched its leader, reeling from the reel.

How to fix the conductor

When installing the need to avoid dragging on the ground and the branches of trees.With the help of a dynamometer set allowable tension line.After the wire is fixed in spans.Docking and discharge lines made watertight terminals, electrical contact is done by piercing the protective layer spikes.Connection can be carried out under voltage clamp design allows this procedure safely.

Details SIW installation process is described in the video below:

Review installation work
YouTube Preview


As we said above, decided to use the self-supporting insulated wire in networks up to 35 kV.Most often it is used in the lines overhead transmission lines, as well as branches of the overhead line to be put into the building.If you want to conduct electricity to the area, in this case, just need SIW, with which you can organize input at the cottage or a private house.In addition, this conductor is used for outdoor lighting.

Putting in a wooden house

By the way, there are SIP peers.For example, an analog SIP-1 is a Finnish conductor AMKA.You can use the French brand wire Torsada Instead of SIP-2.The analog STS-3 is another Finnish conductor - SAX or Polish PAS-W.So what concerns the brands SIP-4 / STS-5, they can be replaced by wires, developed by Swedish technology - EX Four Core ALUS or Polish AsXsn.


last thing I would like to tell, considering the technical characteristics of insulated wires - which manufacturers are the highest quality available today.From domestic manufacturing plants the most high-quality products have the following:

  • LLC "Kamsky Cable";
  • of "Rybinskkabel";
  • LLC "GC" Sevkabel ";
  • JSC "Plant Moskabel".

Using the products of these manufacturers a chance to get a fake or defective wire is very small.However, if you are not sure that your chosen brand of products comply with GOST, be sure to perform a simple test - to determine the cross-section of the cable core in diameter.

That's all that I wanted to tell you about the technical characteristics of the insulated wires, as well as its forms and differences.Hopefully, the information provided was useful for you!

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