STRAIGHT AND RIGHT ANGLE BOOTS
APPLICATIONS:
Heat shrinkable straight and right angle boots are used to insulated the bushings in cable termination boxes up to 36 kV
specially where the clearance phase to phase and phase to earth is less then the normal air clearance.
These boots provide protection against flash over in the event of high humidity, rodent men-ace and surge impulse.
The boots are made from thermally stablized, cross linked, insulating and weather resistant polymeric material. These are coated internally with water resistant mastic.
- All dimensions are in mm
- Drawing depicts typical dimensions E- As supplied
- S- After free recovery
- D,d - internal diameter without adhesive coating
MATERIAL SPECIFICATIONS
| CHARACTERISTIC |
VALUE |
TEST METHOD |
| CHARACTERISTIC |
VALUE |
TEST METHOD |
| PHYSICAL PROPERTIES |
|
|
| Specifice Gravity |
1.15 +02 |
ASTM D-1505 |
| Water Absorption |
1% (Max.) |
ASTM D-570/ISO 62 |
| Tensile Strength |
6N/SOMM (Min.) |
ASTM D-412/ISO 37 |
| Ultimate Elongation |
200% (Min.) |
ASTM D-412/ISO 37 |
| Hardness |
28 +3 Shore D |
ASTM D-2240 |
| THERMAL AGING TEST AT 120째 FOR 500 HOURS |
|
|
| Tensile Strength |
5.5 N/SMM (Min.) |
ASTM D-412/ISO 37 |
| Ultimate Elongation |
100% (Min.) |
ASTM D-412/ISO 37 |
| ELECTRICAL PROPERTIES |
|
|
| Volume resistivity |
1 x 10ohm cm (Min.) |
ASTM D 257/IEC 93 |
| Di-electric Strength |
10kv/mm (Min.) |
ASTM D 149/IEC 243 |
| Di-electric constant |
5 (Max.) |
ASTM D 150/IEC 250 |
DIMENSIONS - GSB SERIES
|
A |
D |
|
d |
|
L |
B |
T |
| Model No. |
S |
E |
S |
E |
S |
S |
S |
S |
|
min |
min |
max. |
min |
max |
min |
min |
s+20% |
| GSB 1 |
140 |
80 |
33 |
34 |
20 |
255 |
40 |
3.6 |
| GSB 2 |
140 |
80 |
33 |
58 |
20 |
255 |
40 |
3.6 |
| GSB 3 |
155 |
80 |
50 |
90 |
50 |
350 |
40 |
3.5 |
DIMENSIONS - GRAB SERIES
|
D |
|
d |
|
P |
R |
E |
O |
T |
| Model No. |
E |
S |
E |
S |
S |
S |
S |
S |
S |
|
min |
max |
min |
max |
min |
min |
min |
Deg. |
+-20% |
| GRAB 1 |
70 |
37 |
36 |
20 |
130 |
100 |
25 |
105 |
3.5 |
| GRAB 2 |
70 |
37 |
50 |
27 |
140 |
110 |
11 |
11 |
4.5 |
| GRAB 2A |
95 |
37 |
67 |
27 |
140 |
120 |
25 |
105 |
4.5 |
| GRAB 3 |
145 |
72 |
65 |
34 |
150 |
155 |
35 |
95 |
4.5 |
