MüV type of rigid protecting pipes for electrical use

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)	( --- )	( --- )