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Cable End Caps - De gasing End Caps |
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Insulcap-De-gassing (RV) is Heat Shrinkable
End Caps, supplied with Relief Valve (RV) & are used for sealing High Voltage & Extra High Voltage Cables (33 kV & above) to release the constantly evolving gas generated inside the Cable during transportation & storage in hot climate conditions.
Features & Benefits:
- Provides additional security to Cables by relieving the pressure generated by Residual gases.
- Automatically releases gas when pressure rises above 3 psi.
- Eliminates possibility of accidental fire caused due to trapped Methane gas while removing the (normal / non relief valved) End caps.
- Possibility to reduce the timing of de-gassing (heating) chamber, thereby savings in energy & time.
- Relief (Non-returnable) valve shall not allow moisture, water, dirt, etc. to enter the cable.
- Ensures gas / defect free cables, adds customer satisfaction.
- Each Relief valve is factory tested for gas release.
- Meets IP 68 (Ingress Protection)
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Working of pressure relief valve
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| Technical Qualification Report : QR 1011 |
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SELECTION CHART |
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All dimensions are in mm |
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| CODE NO. |
Ds (Min.) |
Df (Max.) |
LS (Min.) |
Tf(± 10%) |
CABLE RANGE |
| GEC 102 RV |
30 |
11 |
75 |
2.5 |
12 - 26 |
| GEC 201 RV |
40 |
15 |
90 |
3.3 |
16 - 35 |
| GEC 201 L RV |
40 |
15 |
120 |
3.3 |
16 - 35 |
| GEC 301 RV |
55 |
25 |
125 |
3.8 |
25 - 47 |
| GEC 301 L RV |
55 |
25 |
170 |
3.8 |
25 - 47 |
| GEC 401 RV |
75 |
35 |
140 |
4.0 |
35 - 68 |
| GEC 401 L RV |
75 |
35 |
180 |
4.0 |
35 - 68 |
| GEC 501 RV |
100 |
45 |
160 |
4.0 |
45 - 90 |
| GEC 501 L RV |
100 |
45 |
200 |
4.0 |
45 - 90 |
| GEC 601 RV |
130 |
60 |
160 |
4.6 |
64 - 120 |
| GEC 601 L RV |
130 |
65 |
300 |
4.6 |
67 - 120 |
| GEC 701 RV |
154 |
60 |
165 |
4.6 |
72 - 145 |
| GEC 701 L RV |
154 |
65 |
300 |
4.6 |
70 - 145 |
| GEC 801 RV |
230 |
125 |
220 |
4.6 |
140 - 200 |
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| D : Internal Diameter ; s : as supplied ; f : after free recovery |
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PROPERTIES |
VALUE |
STANDARD |
Physical |
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| Tensile Strength |
12 N/mm2 (MPA)(min) |
ASTM D638 |
| Ultimate Elongation |
350% (Min.) |
ASTM D638 |
| Water absorption |
0.2 % (max.) |
ASTM D570 |
Thermal |
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| Accelerated ageing |
(120oC for 500 Hrs) |
ASTM D2671 |
| Tensile Strength |
11 N/mm2 (Mpa) (min.) |
ASTM D 638 |
| Ultimate Elongation |
300% (Min.) |
ASTM D 638 |
| Heat Shock (250oC for 30 Min.) |
No Cracking or flowing |
ESI 09-11 |
| Continuous Temperature limit |
-40oC to +100oC |
IEC 216 |
Electrical |
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| Dielectric Strength |
12 KV/mm. (Min.) |
ASTM D149 |
| Volume Resistivity |
1 x 1014 Ohm.cm(min.) |
ASTM D257 |
| Dielectric Constant |
5 (Max.) |
ASTM D150 |
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