Product use:

This product is suitable for 220KV power transmission system, for the transmission of electric energy。Widely used in power, construction, mining, metallurgy, petroleum, transportation and other sectors, in temperate and subtropical multi-ant areas widely used。

enforce standards

220kV产品enforce standards为GB/Z18890-2002《澳门威尼斯人》及IEC62067《澳门威尼斯人》

The anti-ant property conforms to GB 2951.38要求；

Service characteristics

1. Maximum rated temperature

The maximum allowable working temperature of the cable conductor for a long term is 90℃, the maximum working temperature for a short time over load is 130℃, and the maximum working temperature for a short circuit (short circuit time is 5S) is 250℃。

2、要求

Cable laying is not limited by the drop, and the ambient temperature during laying is not lower than 0 ° C. If the ambient temperature is lower than 0 ° C, the cable should be preheated。

2.1 Minimum bending radius of the cable

220kV cable installation: 22D0;Run time: 18D0

Note: D0 is the measured value of the cable outer diameter。

2.2 The maximum allowable axial tractive force T for cable installation (without considering the radial side pressure at the bend)

   Conductor: T=K× conductor section (kg)

   Aluminum sheath: T=K× aluminum sheath section (kg)

   In the formula, the coefficient K value is: copper conductor K=7kg/mm², aluminum conductor K=4kg/mm², aluminum sheath K=2kg/mm²。

2.3 The maximum allowable side pressure P when the cable is bent

   P=T/R≤500(kg/m), where T is the axial traction force and R is the bending radius。