Heat Shrinkable insulating tubes are used to
build up insulation over the connector area in high voltage plastic and paper insulated
cables straight through the joints rated up to 36 KV. The Insulating tubes are made from
thermally stabilised cross linked high resistance polymeric material.
-Material
Specifications-
Product color
- Red
Characteristics
Value
Test
Methods
Physical Properties
Specific
gravity
1.19+0.2
ASTM D-1505 /
ISO1183
Water
absorption
1%(max)
ASTM D-570 /
ISO62
Tensile
strength
8 N/sqmm (min)
ASTM D-412 /
ISO 37
Ultimate
elongation
200%(min)
ASTM D-412 /
ISO 37
Thermal Ageing Tests (120° C for 500 hrs)
Tensile
strength
7 N/sqmm(min.)
ASTM D-412 /
ISO 37
Ultimate
elongation
100%(min.)
ASTM D-412 /
ISO 37
Thermal Tests
Heat
shock(30min,200°C)
No Cracking/No
flow
ESI 09-13
Low temp.
Flexibility(-40°C)
No Cracking
ASTM D-2671
Flammability
Self
extinguishing
ASTM D-2671-B
Electrical Properties
Volume
resistivity
1012 Ohms-cm
(min)
ASTM D-257
/IEC 93
Dielectric
strength
10KV/mm(min)
ASTM D-149
/IEC 243
Dielectric
constant
5(max)
ASTM D-150/
IEC 250
Chemical Properties
Fungus
resistance
<1
ASTM G-21
Chemical
resistance immersion in following liquids-NaoH(40%), H2SO4(3%),
Toluene, Acetone for 24hrs at room temp.
Good (No
visual defects)
ISO - 175
-PRODUCT DIMENSIONS-
Size
Dia D
T
E
S
S
Min.
Max.
+20%
30/10
30
10
3.0
35/12
35
12
2.5
40/13
40
13
3.5
55/18
55
18
3.2
60/24
60
24
2.5
65/21
65
21
4.0
80/26
80
26
4.0
All dimensions are in mm
E-As supplied
D-Internal diameter without adhesive coating
Drawing depicts typical dimensions
S-After free recovery
L-Length as per requirement
|Products|
Heat Shrinkable Components and Tubings for Power Cables:
