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It applies to the transmission and distribution lines with rated voltage from 0.6/1 kilovolts to 26/35 kilovolts flame retar- dant power cable is used in the places with special demands of flame retardant property, where cable is laid tightly.
Uorated power frequency voltage between conductor and shield or metallic sheath when. Cable is designed.
Urated power frequency voltage between conductors when cable is designed
Ummax. Equipment voltage (max. System voltage of the equipment in service)
Class 1 applies to the system of the duration of single phase earhing fault normally less than 1 minutes each time or the system of maximum duration less than 8 hours each time but the total duration not more than 125 hour.
Class 2 applies to the system of more duration of earhing fault or the system with higher requirement to the property of insulation.
2\If it can not be open after download files, please install the PDF reader;
3\When the download is recommended to download tools or Save Target As
It applies to the transmission and distribution lines with rated voltage from 0.6/1 kilovolts to 26/35 kilovolts flame retar- dant power cable is used in the places with special demands of flame retardant property, where cable is laid tightly.
Uorated power frequency voltage between conductor and shield or metallic sheath when. Cable is designed.
Urated power frequency voltage between conductors when cable is designed
Ummax. Equipment voltage (max. System voltage of the equipment in service)
Class 1 applies to the system of the duration of single phase earhing fault normally less than 1 minutes each time or the system of maximum duration less than 8 hours each time but the total duration not more than 125 hour.
Class 2 applies to the system of more duration of earhing fault or the system with higher requirement to the property of insulation.