Type: MÜ III.
Standard: VSZMTS 06.30/2001. (MSZEN 61386 except dimensions)
Field of application: Applicable for protection of insulated electrical cables. Installation may be made with building into the wall chase or above the false ceiling or can be laid. Tubes are applicable in rooms having “C” and “D” classification for inflammable risk (between temperature range of (-5) °C and (+60) °C without any strong mechanic effects. The type of protection will be specified by the properties of pipe network and its accessories and the development of connections.
Material: Rigid PVC for electrical use
Colour: grey
Dimensions:
D = nominal diameter (mm)
v = nominal wall thickness (mm)
Description and nominal sizes of the protective pipe:
|
Description |
D (mm) |
d min. (mm) |
|
|
MÜ III. |
11 |
12,1 |
11 |
|
13,5 |
14,6 |
13,5 |
|
|
16 |
17,2 |
16 |
|
|
23 |
24,4 |
23 |
|
|
29 |
30,8 |
29 |
|
|
36 |
38,2 |
36 |
|
|
48 |
50,6 |
48 |
|
Execution: in bundles with length of 2,5 metres or according to requirements of customers.
Raw Material:
| Density | g/cm3 | 1,6 |
| Tensile strength | MPa | 40 |
| Elongation at break | % | 15 |
| Specific volumetric resistance at 20 °C | Ohm x cm | 1 x 1015 |
| Breakdown voltage | kV/mm | 20 |
Execution of Product: Smooth surface outside and inside with round cross-section
Strength properties:
Flexibility: Before bending practical to preheat the bending length along the contour by rubbing or any other way to 40-45 °C. By smaller diameters (MÜ III. 11-16.) practical to use the bending insert and bed produced by VSZM. By bigger diameters (above MÜ III 23.) necessary to use the bending insert after preheating on.
Compressing strength: on the result of 125 N compression lasting dents (less than 10%), the decrease of the outside diameter is less than 25%, there is no crack on the surface.
Impact resistance: After treatment at 60 ± 2 °C for 240 hours and then at -5 °C during 2 hours at least 9 from 12 test tubes will not be broken under effect of 0,6 J.
Heat-resistance: 60 ± 2 °C
Ignitability: tubes are hardly inflammable according to V0 and self extinguish
Electrical properties:
Electric strength: Tubes comply with requirements in case of test at 2000 V during 15 min. after immersion in water during 24 hours.
Aids for bending and joining
Bending insert for the tube: Applicable for nominated diameter of 11, 13,5 and 16 mm for cold bending
Material: flexible PVC
Colour: optional
Bending bed for tubes: Applicable for nominated diameter of 11, 13,5 and 16 mm for cold bending
Material: flexible PVC
Colour: optional
Expanding mandrel: Applicable for expanded cold joining for tubes with nominated diameter of 11, 13,5 and 16 mm.
Material: rigid PVC
Colour: optional