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 C° to 130 C° 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 |
125oC |
IEC
216 |
| Continuous
Temperature limit |
-40oC
to + 100oC |
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 |
|
