Product features and uses

PVC insulated and sheathed power cable has good electrical properties and chemical stability, simple structure, easy to use. This product is suitable for AC rated voltage 0.6/1kV Uo/U and the following transmission and distribution lines on the road.

The main features of the flame retardant power cable is the cable is not easy to fire or ignition delay ignition is limited in a certain range, applicable to the cable laying intensive and high power station, subway, tunnel, high-rise buildings, large industrial and mining enterprises, oil, coal and other places.

The main features of the fire-resistant power cable is the cable not only can transmit electrical power under normal operating conditions, cable in the ignition and combustion can still maintain the normal operation of a certain period of time, used in nuclear power station, subway, tunnel, high-rise buildings and other places related to fire safety and fire rescue.

Two, product standards

This product is organized in accordance with 12706.1-2002 GB/T or IEC 60502 standard, and can be produced according to the other standards as required by the user.

Flame retardant cable in addition to the above standard, the flame retardant performance according to the GB/T18380.3-2001 standard is divided into A, B, C three kinds of different flame retardant category, a class of flame retardant performance of the best, the user can choose according to need.

The refractory performance of the fire resistant cable shall be in accordance with GB/119216.21-2003.

Non halogen low smoke flame retardant cable according to corporate standards organizations production, flame retardant properties in accordance with the provisions of the standard of GB/T18380.3-2001 divided into a, B and C for different types of anti fire and smoke concentration by the provisions of the GB/T17651-1998 test, pH value and conductivity should conform to the GB/T17650.2-1998 provisions of the.

Three, product model

Common type cable model

VLV, VV - PVC insulated and sheathed power cable

VLY, VY - PVC insulated, PE sheathed power cable

VV22, VLV22 PVC insulated PVC sheathed power cable.

VV23, VLV23 PVC insulated steel tape armored PE sheathed power cable

VV32, VLV32 PVC insulated steel wire armoured PVC sheathed power cable

VV33, VLV33 PVC insulated fine steel wire armoured and PE sheathed power cable.

Flame retardant type cable model

Plus ZA, ZB, and ZC before the model of common type power cable

Fire resistant cable type

In the ordinary type of power cable model plus N

Four, the use of product characteristics

(1) rated voltage Uo/U is 0.6/1kV.

(2) the maximum rated temperature of the cable conductor is 70.

(3) the maximum temperature of the cable conductor (the longest duration not exceeding 5S) is not more than 160.

(4) the ambient temperature of the cable should not be less than 0 degrees Celsius, the minimum bending radius is as follows:

The single core armoured cable: 20D

The single core armoured cable: 15D

Three core armored cable: 15D

There are three core armored cable: 12D

(Note: D is the external diameter of the cable)

Five, the main technical parameters

Cable load flow calculation condition

Ambient temperature: 40 degrees Celsius in the air; buried laying 25.

Cable conductor temperature 70

When the cable is buried, the coefficient of thermal resistance of the soil is g=1.0 C m/W, but the phenomenon of the increase of the soil thermal resistance coefficient caused by the water transfer has not been considered in the long run of the cable.

When the cable is laid, the distance between the axis of the cable and the ground is 700mm.

A plurality of flat cable laying, Cable axial distance S=2D