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Standard product standards
This product by GB12706 the rated voltage up to and including 35 kv plastic insulated power cable, copper, aluminum core standard production.
The product is manufactured according to the stand of GB12706 or IEC,BS,DIN and ICEA upon request.
Scope of Applications
This product is suitable for rated power-frequency voltage up to and including 0.6/1 kv power distribution lines or fixed installation with industrial equipments.
The product is suitable for use in power distribution lines or fixed insta-llations with rated power-frequency voltage up to and including 0.6/1KV.

Use characteristic Operating characteristics
Rated power-frequency voltage up to Uo/U for 0.6/1 kv.
　　Rated power-frequency voltage Uo/U:0.6/1KV.
Cable conductor long-term work without the permission of the highest temperature is 70 ℃
　　Max.permissible continuous operating temperature of conductor: 70℃
When a short circuit (the longest duration of no more than 5 s) allow the highest temperature of the cable conductor:
Conductor cross section & le;300 was & ndash;160 ℃;
Conductor cross section 300 & ndash;> 140 ℃;
　　Max.short-circuit temperature of the conductor shall not excssd: (5smaximum duration).Cross-section of conducter ≤ 300mm2 – 160℃；
Cross - section of conducter > 300 was & ndash;140 ℃, when the ambient temperature under installation should not below 0 ℃.
　　The ambient temperature under installation should should not below0℃
The bending radius should not less than 10 times of cable diameter.
The bending radius of a cable should not be less than 10 times of The cable diameter. The cable model Type of cable

The main classification

According to the voltage are rated

According to the voltage level can be divided into the medium and low voltage power cables (35 kv and below), high voltage cable (110 kv) and ultra-high voltage cables (275 ~ 800 kv) and ultra-high voltage cable (1000 kv and above).In addition, it can be divided into ac and dc cable in the current system.

According to the insulation material

1, oil impregnated paper insulating power cable with oil impregnated paper insulated power cable.The longest history in its application.It safe and reliable, long service life and low cost.The main drawback is laying head restrictions.Since developed not drip impregnated paper insulation, solve the problem of the gap between limit, make the oil impregnated paper insulated cable to a wide range of applications.

2, plastic insulated power cable Insulation for extrusion plastic power cable.The commonly used plastic PVC, polyethylene, crosslinked polyethylene.Plastic cable structure is simple, easy to manufacture, light weight, easy installation, laying head laying without limit.Therefore widely used for low voltage cable, and has a tendency to replace the cable viscous dipping the paper.Is its biggest drawback dendronized breakdown phenomenon, which limits the use of it at a higher voltage.

3, rubber insulated power cable insulation layer of rubber with various additives, after fully mixing extruded on the conducting wire core, after heating vulcanization.It is soft, elastic, suitable for mobile frequently, laying the occasion of small bending radius.

Commonly used as insulating rubber has a mixture of natural rubber, butylbenzene rubber, 3-20, butyl rubber, etc.

According to the voltage are rated

1, low voltage cable: suitable for fixed installation in ac 50 hz, rated voltage up to and including 3 kv power transmission and distribution lines for transmission of electricity.

2, in the low voltage cable (generally refers to 35 kv and below) : PVC insulated cables, polyethylene insulated cable, cross-linked polyethylene insulated cable, etc.

3, high voltage cable: general for 110 kv and above) : polyethylene cable and cross-linked polyethylene insulated cable, etc.

4, ultra-high voltage cable (275 ~ 800 kv).

High voltage cable (5, 1000 kv and above).

The basic structure

The basic structure of power cable line by core (conductor), insulation, shielding layer and protective layer of four parts.

Wire core

Wire core is conductive part of power cable, which is used to transfer power, is the main part of the power cable.

Insulating layer

Insulation is the line between the core and the earth and the different phase of wire core in the electrical insulated from each other, guarantee the electric power transmission, is an integral part of power cable structure.

shield

More than 15 kv power cables are generally have a conductor shielding layer and the insulating shield.

Protective layer

The role of the protective layer is to protect the power cable from the outside world the invasion of the impurities and moisture, and prevent the external force directly damage the power cable.

The main advantages

1 covers an area of less.Generally buried in soil or laying in indoor, the channel, the tunnel, wire insulation distance is small, no tower, covers an area of less, basic don't cover surface space.

2 high reliability.Affected by the climate conditions and the surrounding environment is small, stable transmission performance, high reliability.

3 have to ultra-high voltage, large capacity development more favorable conditions, such as low temperature, HTS power cable, etc.

4 distributed capacitance is bigger.

5 less maintenance workload.

6 shock less likely.

Model specification

The model of power cable

1. Capitalize the first letter of pinyin in Chinese said within the insulation class, conductor material, sheath material and structural features.As with Z represents paper (zhi);L on behalf of the aluminum (lv);Q represents the lead (qian);F on behalf of the split phase (fen);ZR on behalf of the flame retardant (zuran);NH on behalf of the refractory (naihuo).

2. Use the figures show that the outer sheath, there are two Numbers.Without number represents without armoured layer, outer layer.First digital representation armor, the second digit indicates that the outside is, such as thick steel wire armoured fibers are represented as 41.

3. The cable type according to the arrangement of cable structure generally in sequence as follows: insulation materials;Conductor materials;Within the sheath;Outer sheath.

4. Cable products represented by type, rated voltage, and specification.The method is explained in after model coupled with rated voltage, some conclusions and nominal cross-sectional area.

Model in detail

Categories: (1) H - local communication cable

HP - distribution cables

HJ - cable

(2) insulation: Y - polyethylene insulation

YF - bubble polyolefin insulation

YP - foam/solid leather polyolefin insulation

(3) inner sheath: A, plastic coated aluminum adhesive belt shielding PE sheathed

S - aluminum, steel double metal belt shielding PE sheathed

V - PVC sheathed

(4) characteristics: T - oil paste filling

G - high frequency isolation

C - messenger

(5) the outer sheath: 23 - double the anti-corrosion steel band around the underwriting layer outside the polyethylene

33 - single fine steel wire armoured polyethylene layer

43 - monolayer thick steel wire armoured polyethylene layer

53 - single steel belt wrinkles longitudinal armoured polyethylene outer layer

553 - double steel with wrinkles is applied to longitudinally wrap armoured polyethylene outer layer

2) BV copper core PVC insulated wire;

BLV aluminum conductor, PVC insulated wire;

BVV copper core PVC insulated PVC sheathed wire;

BLVV aluminum conductor, PVC insulated PVC sheathed wire;

BVR copper core PVC insulated flexible wire;

The RV copper core PVC insulated cord installation;

RVB copper core PVC insulated flat cable cord;

BVS type copper core PVC insulated ground cord;

RVV copper core PVC insulated PVC sheathed flexible wire;

BYR polyethylene insulated flexible wire;

BYVR polyethylene insulated PVC sheathed flexible wire;

RY polyethylene insulation cord;

RYV polyethylene insulated PVC sheathed flexible wire

3) WD: low smoke zero halogen type

ZR: flame retardant

NH: refractory type

DH: fire type