Suspension Porcelain Insulators Disc Suspension Insulators For Ground Overhead Lines

Unit spacing (H) mm

146

146

170

170

Nominal diameter (D) mm

280

280

320

320

Nominal Creepage Distance (mm)

450

450

545

545

Rated E&M failing load (kN)

70

120

160

210

Routine tensile load (kN)

35

60

80

105

Coupling size

16

16A

20

20/24

Impact strength N.m

6

7

10

10

D.C withstand voltage

Wet (kv)

50

50

55

55

Dry (kv)

125

125

140

140

D.C flashover voltage

Wet (kv)

55

55

60

60

Dry (kv)

140

140

155

155

Dry lighting impulse withstand voltage (kV)

130

130

140

140

Puncture voltage in SF6 (kV)

+185

+185

+210

+210

Weight (kg)

6.85

7.80

12.90

13.90

Applicable standard IEC 61325