Manufactured from polyolefin, inner coated with hot-melt adhesive at the ends. Excellent insulation, flame retardant, thermal stability, etc. Used to protect cable against flashover or surges induced in switchgear and transformer. Shaped components to meet a range of requirements.
Heat Shrinkable Insulating Boots can be used over medium voltage terminations to insulate bushings in cable boxes up to 36kV, particularly where the normal clearance between phase to phase and phase to earth is less than the required value.
This kit contains both Straight & Right-Angled Boots
Provide protection against flashover in the event of any surge impulse, high humidity or rodent menace contact.
Made from thermally stabilised cross linked material for excellent insulation and weather resistant properties.
The boots are internally coated with a hot melt adhesive
Property |
Test Method |
Standard Value |
Tensile Strength |
ASTM-D-638 |
≥10MPa |
Elongation at Break |
ASTM-D-638 |
≥300% |
Tensile Strength Variation After Heat Aging(130ºCx168h) |
ASTM-D-5510 |
≤±20% |
Elongation at Break Variation After Heat Aging(130ºCx168h) |
ASTM-D-5510 |
≤±20% |
Volume Resistivity |
IEC 60093 |
≥1x1014Ω.cm |
Dielectric Strength |
IEC 60243 |
≥25kV/mm |
Spec. |
As Supplied/mm |
After Recovered/mm |
D1 Min |
D2 Min |
D1 Max |
D2 Max |
W |
W2 |
(±10%) |
(±10%) |
Right Angle Boot |
R1 |
80 |
35 |
36 |
19 |
5.6 |
5 |
R2 |
80 |
50 |
36 |
19 |
5.6 |
5 |
R3 |
80 |
50 |
36 |
28 |
5.6 |
5 |
R4 |
95 |
70 |
36 |
28 |
5.6 |
5 |
R5 |
145 |
70 |
72 |
34 |
5.6 |
5 |
In-line Bushing Boot |
S1 |
80 |
34 |
32 |
19 |
3.6 |
3.6 |
S2 |
80 |
58 |
32 |
19 |
3.6 |
3.6 |
S3 |
140 |
90 |
68 |
34 |
3.6 |
3.6 |