Lavspenning/Kabler/Langlinjekabel - L♦♦-1,2 METI-45P B0,8

1 SCOPE

1.1 Purpose

The purpose of the technical specification is to provide guidance for the production, test procedures and delivery of products according to stated requirements. The technical specification contains technical and functional requirements to be fulfilled.

The cables shall provide capability to transfer signals on twisted pairs in harsch environment. The cables shall be free of halogens and self-extinguishing (METI types). The cables shall withstand relevant loads that may be present in normal operation of facilities for railways.

M (1. letter) = foamed insulation of PE / PP with filling compound (Vaseline)
E (2. letter) = sheath of PE / PP
T (3. letter) = armouring (helically wraped aluminium leads in electrical contact with two steel tapes)
I (4. letter) = outer sheath of halogen-free polymer (self-extinguishing)
E (4. letter) = outer sheath of PE / PP

To be used for long distance balanced transmission in harsch environment.

1.2 History

No significant change.

2 REQUIREMENTS

2.1 Electrical requirements

a) Electrical properties at 20 °C:

1	Capacitance at 1 kHz, (cable with 10 pairs):	45 ± 3 nF/km
2	Capacitance at 1 kHz, (cable with more than 10 pairs):	45 ± 2 nF/km
3	DC resistance in loop, mean value:	30,7 ohm/km
4	DC resistance in loop, maximum:	31,9 ohm/km
5	Insulation resistance:	5000 Mohm x km
6	Insulation test:	DC 1,5 kV in 3 seconds
7	Insertion loss, 800 Hz:	0,55 dB/km

2.2 Cable types and mechanical requirements

a) The following mechanical requirements apply:

Number of pairs	Designation	F.number	Min. bending diameter (mm)	Max. longitudinal load (N)	Weight (approx.) (kg/km)	Shielding factor 100 V	Shielding factor 400 V	Shielding factor 600 V
10	L10-1,2 METI-45P B0,8	to be defined	700	320	1500	< 0,1	< 0,25	< 0,4
20	L20-1,2 METI-45P B0,8	to be defined	800	550	2000	< 0,1	< 0,20	< 0,3
30	L30-1,2 METI-45P B0,8	to be defined	900	750	2700	< 0,1	< 0,20	< 0,3
40	L40-1,2 METI-45P B0,8	to be defined	1000	1000	3000	< 0,1	< 0,15	< 0,3
50	L50-1,2 METI-45P B0,8	to be defined	1100	1200	3400	< 0,1	< 0,15	< 0,25
10	L10-1,2 METE-45P B0,8	to be defined	700	320	1400	< 0,1	< 0,25	< 0,4
20	L20-1,2 METE-45P B0,8	to be defined	800	550	1900	< 0,1	< 0,20	< 0,3
30	L30-1,2 METE-45P B0,8	to be defined	900	750	2500	< 0,1	< 0,20	< 0,3
40	L40-1,2 METE-45P B0,8	to be defined	1000	1000	2900	< 0,1	< 0,15	< 0,3
50	L50-1,2 METE-45P B0,8	to be defined	1100	1200	3300	< 0,1	< 0,15	< 0,25

F.number is a unique 9-digit number identifying the specific production variant.

2.3 Constructions of cable elements and cables

a) The following dimensions apply:

Number of pairs	10	20	30	40	50
Conductor diameter, solid annealed Cu (mm)	1,2	1,2	1,2	1,2	1,2
Outer insulation diameter, foamed PE, 10-20 % (mm)	2,35	2,35	2,35	2,35	2,35
Number of pairs in basic group	10	10	10	10	10
Number of groups with 10 pairs	1	2	3	4	5
Cable core (mm)	14,8	21,0	26,0	28,5	31,5
Inner sheath, black PE (mm)	17,5	23,5	28,8	31,8	35,0
Aluminium leads Ø1,6 (as dense as possible within one layer)	20,7	26,7	32,0	35,0	38,0
Semiconductive wrapping (mm)	(0,1)	(0,1)	(0,1)	(0,1)	(0,1)
Galvanic steel tapes (mm) (mm)	(2*0,8) 25,0	(2*0,8) 31,2	(2*0,8) 36,5	(2*0,8) 39,5	(2*0,8) 42,5
Outer sheath, black * (mm) (* See specification below)	28,5	35,0	40,5	43,5	46,5

1. The aluminium leads shall be helically wrapped in one direction and the two steel tapes shall be wrapped in the other direction.

b) The conductors in the 10 pair group shall have a colour coding permeating the insulation as follow:

Pair number	A lead	B lead
1	Blue	Red
2	White	Red
3	Yellow	Red
4	Grey	Red
5	Orange	Red
6	Blue	Black
7	White	Black
8	Yellow	Black
9	Grey	Black
10	Orange	Black

1. The position within the 10 pairs group should be randomized.
2. The revolving length of the twisted pairs in the 10 pairs group should be different and optimized for better cross talk performance.

c) The 10 pairs groups are identified by a thin tape sorrounding the 10 pairs with a colour code as follow:

10 pairs group	Colour code
1	(Blue)
2	White
3	Yellow
4	Grey
5	Orange

d) A rip thread shall be included under the inner sheath to assist easy removal of the inner sheath.

e) The two steel tapes shall be revolved with an overlap.

f) A rip thread may be included under the outer sheath to assist easy removal of the outer sheath.

g) The compound of the outer sheath shall be selected to minimize problems with rodents and UV radiation.

1. Cables with the designation L♦♦-1,2 METI-45P B0,8 shall have an outer sheath of self-distinguishing polymer (LSFROH; Low Smoke Fire Retardent Zero Halogen).
2. Cables with the designation L♦♦-1,2 METE-45P B0,8 shall have an outer sheath of black PE / PP.

2.4 Tools

a) It shall be possible to terminate the cables without the use of special tools.

2.5 Fire properties

a) The cables with the designation L♦♦-1,2 METI-45P B0,8 shall fulfil the requirements in IEC 60332-1 (related to fire).

2.6 Markings

a) The outer sheath of the cable shall have easy readable and durable markings with the following information:

1. manufacturer's name
2. designation
3. F.number
4. accumulative length at every meter of the actual production length (note)
5. preferably also a unique production identity
6. year of production

(Note) The first and the last length figures shall be readable at/on the production package (drum or other package).

b) € marking is not relevant.

2.7 Quality certificate

a) A quality certificate containing test results or control check points shall accompanying the cable and the invoice. The quality certificate shall indicate the purchase number.

2.8 Documentation, language

a) Product sheets shall be available in Norwegian.

3 ENVIRONMENTAL CONCERNS

a) All cables shall be fitted with protective caps at both ends to avoid intrusion of moisture and contamination.

b) Production, use and disposal of the products shall be possible obeying national regulations (Forurensningsloven).

4 REFERENCES

Undated references are supposed to be the last updated version, including any amendments and updates.

1. IEC 60304: Standard colours for insulation for low-frequency cables and wires.
2. IEC 60708: Low frequency cables with polyolefin Part 1. General design details and requirements, relevant clauses.
3. IEC 60332-1: Test on electric cables under fire conditions Part 1: Test on a single vertical insulated wire or cable

5 CONFORMANCE LIST

Clause	req.	Complient: (YES / NO)	... any comments
2.		---/---	REQUIREMENTS
2.1		---/---	Electrical requirements
	a
2.2		---/---	Cable types and mechanical requirements
	a
2.3		---/---	Constructions of cable elements and cables
	a
	b
	c
	d
	e
	f
	g
2.4		---/---	Tools
	a
2.5		---/---	Fire properties
	a
2.6		---/---	Markings
	a
	b
2.7		---/---	Quality certificate
	a
2.8		---/---	Documentation, language
	a
3.		---/---	ENVIRONMENTAL CONCERNS
	a
	b