DOUBLE TENSION STRING WITH COMPOSITE INSULATORS Maira LDI 000

Both single and double tension string are used at medium voltage overhead lines for mounting the cables with the cross section of 120 mmp.
Nr.crt Type of insulator
1 H 24.80.445 (IV,TT)
2 L 24.80.361 (II,TT)
COMPONENTS
Composite suspension & distribution deadend insulator 2
Single yoke 2
Twisted piece
U 60 or B 6,5 Part 1
Clamp 1

         
ENVIRONMENT CONDITIONS
Maximum ambient temperature + 50 °C
Minimum ambient temperature – 55 °C
Maximum humidity 100 %
Dynamic category N – SR HD 478.2.1.S1
Use category 3 – SR 1054-93
TECHNICAL DATA
Nominal system voltage 24 KV
Withstanding voltage with frequency power in wet condition  85 Kv
Flashover voltage (average of 5 flashovers)  119.4 Kv
Lightning impulse flashover voltage (negative) 243 Kv
Lightning impulse flashover voltage (positive)  215.4 Kv
Specified mechanical load  80 Kn

Usable standards as follows: IEC 61109, IEC 383-1, IEC 383-2 and IEC 61466