Types: MüV I. MüV II.
Application: The MÜV type of protecting pipe is applicable for protecting pipe networks of insulated conductors and cables of electric or telecommunication constructions at 1000 V alternating voltage and/or 1500 V direct voltage.
Conductors and cables are accessible at the ends of the protecting pipe.
Parts of the protecting pipe network:
Protecting pipes
Accessories (bends, sleeves)
Instructions for protecting pipe networks for electrical use:
| General requirements: | MSZ EN 61386-1 | 2008 |
| Rigid protecting pipe networks: | MSZ EN 61386-21 | 2008 |
Sizes: Instruction according to MSZ EN 60423:1999
| Type | Outer diameter (mm) | Minimal inner diameter (mm) |
| NA 12 | 12 +0;-0,3 | 9,3 |
| NA 16 | 16 +0;-0,3 | 12,5 |
| NA 20 | 20 +0;-0,3 | 16,5 |
| NA 25 | 25 +0;-0,3 | 20,5 |
| NA 32 | 32 +0;-0,4 | 27,5 |
| NA 40 | 40 +0;-0,4 | 35,5 |
| NA 50 | 50 +0;-0,5 | 39,6 |
Execution: Smooth surface outside and inside with round cross-section
Ovalisation: in the limits of the inner diameter
Eccentricity: max. 10% of the pipe’s diameter
Delivery length: 2 metres or as demanded to 6 metres
Material: rigid PVC for electrical use
Material properties:
| Density | gr/cm3 | 1,65 |
| Tensile strength | MPa | min 40 |
| Elongation at break | % | min 10 |
| Impact-bending strength ( Charpy ) | KJ/m2 | 3,5 |
| Breakdown voltage | kV/mm | min 20 |
| Specific volumetric resistance | Ohm | min 1012 |
Ignitability: VO – hardly inflammable
Flame proofing: it does not spread the flame, after removing the ignition flame it will be extinguished.
Specification code for MüV type of protecting pipes according to MSZ EN 50086 -1:1997
|
Quality properties |
Type |
|
|
MüV. I. |
MüV. II. |
|
|
1. Compression strength |
3 (medium) |
2 (substandard) |
|
2. Impact resistance |
3 (medium) |
2 (substandard) |
|
3. The smallest applicable and constructible temperature (-5°C) |
2 |
2 |
|
4. The highest applicable and constructible temperature (60°C) |
1 |
1 |
|
5. Bending strength (rigid) |
1 |
1 |
|
6.Electrical properties (electrical insulation property) |
2 |
2 |
|
7. Resistance against penetration of solid foreign objects (depending on accessory and joint) |
( 6 ) |
( 6 ) |
|
8. Water-proof (depending on accessory and joint) |
( 7 ) |
( 7 ) |
|
9. Protecting pipe of metal and compound material |
Not applicable for MüV protecting pipes |
|
|
10. Tensile strength (depending on accessory and joint) |
( — ) |
( — ) |
|
11.Flame proofing |
1 |
1 |
|
12. Suspension capacity (depending on accessory and joint) |
( — ) |
( — ) |
Adequacy statement of production:
“CE”- applicable: 1/98 VSZM Kft. according to government decree No. 208/1999 and 79/1997 IKIM
Certificate of type testing:
MEEI : D1459K119 CCA / HU 0091