|
|
|
HEAT
SHRINKABLE RIGHT ANGLE / STRAIGHT BOOTS |
|
|
Heat Shrinkable Right Angle and Straight Boots are generally
the integral part of termination assembly of Power Cable upto 36
KV, which provides insulation to the bushings in the terminating
box, where the clearance between phase to phase and phase to earth
is less than the normal air clearance. The insulated assembly by
use of these boots provides protection against flashovers, short
circuiting which may be due to highly humid conditions, rodent
menace and surge impulse. These boots are produced from Cross
Linked Polyolefin Materials.
Features :
- Excellent non-tracking performance
- Easy installation and better sealing
- Excellent Corrosion resistance
- Very high Dielectric strength and
resistant to Impulse voltage
|
- Good for -40 Cº to 130 Cº continuous
temperature
|
|
RIGHT ANGLE BOOT |
 |
Right Angle Boot
| CODE |
D
|
d
|
P
|
R
|
T
|
| |
s
|
f
|
s
|
f
|
f
|
f
|
f
|
|
min
|
max
|
min
|
max
|
min
|
min
|
+/-10%
|
| GRB - 1 |
78 |
35 |
32 |
16 |
160 |
130 |
4.0 |
| GRB - 2 |
78 |
36 |
52 |
27 |
170 |
140 |
4.5 |
| GRB - 2A |
91 |
37 |
67 |
27 |
170 |
140 |
4.5 |
| GRB - 3 |
145 |
72 |
67 |
34 |
170 |
150 |
4.5 |
|
STRAIGHT BOOT |
 |
Straight Boot
|
CODE
|
D
|
d
|
A
|
L
|
B
|
T
|
| |
s
|
f
|
s
|
f
|
f
|
f
|
f
|
f
|
|
min.
|
max.
|
min. |
max. |
min. |
min. |
min |
+/-10% |
| GSB - 1 |
80 |
34 |
34 |
21 |
140 |
225 |
30 |
3.6 |
| GSB - 2 |
80 |
34 |
58 |
21 |
140 |
225 |
30 |
3.6 |
| GSB - 3 |
140 |
65 |
90 |
33 |
155 |
325 |
40 |
4.2 |
D,d : Internal Diameter ; s : as supplied ; f : after free
recovery ; Tb,Tc : Thickness of body & core
TECHNICAL SPECIFICATION
|
Properties
|
Value
|
Standard
|
|
Physical
|
|
|
| Tensile Strength |
12 N/mm² (MPA) (min) |
ASTM D638 |
| Ultimate Elongation |
350% (Min.) |
ASTM D638 |
| Density |
1.15 +/- 0.2 gm/cm³ |
ASTM D792 |
| Hardness |
45 +/- 10 Shore D |
ASTM D2240 |
| Water Absorption |
0.5 % (max.) |
ASTM D570 |
|
Thermal
|
|
|
Accelerated Ageing
Tensile Strength
Ultimate Elongation |
(120oC
for 500 Hrs)
11 N/mm2 (Mpa)
(min.)
300 % (Min.) |
ASTM D2671
ASTM D 638
ASTM D 638 |
Low temperature Flexibility
(-40oC for 4 Hrs.) |
No Cracking |
ASTM D2671 |
Heat Shock
(250oC for 30 Min.) |
No Cracking or flowing |
ESI 09-11 |
| Shrink Temperature |
125°C |
IEC 216 |
| Continuous Temperature limit |
-40°C to + 100°C |
IEC 216 |
|
Electrical
|
|
|
| Dielectric Strength |
12 KV/mm. (Min.) |
ASTM D149 |
| Volume Resistivity |
1 x 1014
Ohm.cm(min.) |
ASTM D257 |
| Dielectric Constant |
5 (Max.) |
ASTM D150 |
| Resistant to track & erosion |
No tracking,erosion or
flame failure upto 3.25
KV for 20 min. |
ASTM D2303 |
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