Application

The  cables  are  designed  for  use  in  access  or  trunk  networks,  from  telephone exchange to subscriber area. The cables are suitable for installation in ducts, direct burial in the ground and also for aerial installation with integral suspension strand. An armoured option is offered for direct burial installations. A figure-8 self support option is offered for aerial installation

Standards

 • IEC 60708

 

 

 

Construction

Conductors
Solid annealed bare copper, 0.4/0.5/0.6/0.8mm as per BS 6360/IEC 60228 Class 1

Isolation
Solid polyethylene as per IEC 60708/BS EN 50290-2-23/BS 6234/ASTM D 1248/NFC 32-060/VDE 0207

Twisted Pairs
Insulated conductors are twisted into pairs with varying lay length to minimize crosstalk

Elément de câblage
Pairs or Quads

Cable Core Assemblée
Cables with 100 pairs or less are composed of 10-pair sub-units; cables with over 100 pairs are composed of 50 or 100-pair units. Any extra pairs form a separate unit. Units are identified by colour coded binders. Standard construction is per IEC 60708 in Cable Make Up Diagram

Core Wrapping
One or more non-hygroscopic polyester tapes are helically or longitudinally laid with an overlap. These tapes furnish thermal, mechanical as well as high dielectric protection between shielding and individual conductors

Moisture Barrier
A layer of aluminium tape (0.15mm) coated with PE-copolymer on one or both sides is applied longitudinally with overlap over the cable core to provide electrical shielding coverage and ensure a barrier against water vapor. In cables with more than 200 pairs, the aluminum tape may be corrugated for improved cable flexibility

Gaine
Black low density polyethylene as per BS 6234/IEC 60708/ASTM D 1248, being able to withstand exposure to sunlight, temperature variations, ground chemicals and other environmental contaminants

Ripcord
Ripcord may be provided for slitting the sheath longitudinally to facilitate its removal

Paires de rechange(optional)
Spare pairs may be incorporated in large pair cables

Fil de continuité (optional)
Tinned copper drain wire may be longitudinally laid to ensure electrical continuity of the screen

Facultatif Construction

Câble armé
Steel wire armour or corrugated steel tape armour is applied over an optional inner polyethylene sheath.For steel tape version, the steel tape is 0.2/0.5mm thick, being coated with a PE copolymer and applied with an overlap. An outer polyethylene sheath is applied over the armour

Self-Support de câbles
Per CW 1252. A 7-strand galvanized steel strand is used as support wire. Black polyethylene

                      

 

 

 

 

sheath covers both core and support wire in a figure-8 construction   

Electrical Properties     

Chef d'orchestre Diamètre nominale	mm	0.4	0.5	0.6	0.8
Chef d'orchestre Gauge Size	AWG	26	24	-	20
Conductor Taille	mm2	0.126	0.196	0.283	0.5
Maximum Moyenne Conductor Resistance @20°C	Ω/km	143	91	63	34.6
Minimum de résistance d'isolement @500V DC	MΩ.km	5000	5000	5000	5000
Maximum Moyenne Mutual Capacitance @800Hz	nF/km	53	53	56	59
Capacité maximale de placement individuels @800Hz (for 99% cases)	nF/km	60	60	60	64
Capacité maximale individuelle Unbalance @800Hz pair-to-pair	pF/500m	250	250	250	160
Capacité maximale individuelle Unbalance @800Hz pair-to-pair (for 95% cases)	pF/500m	150	150	150	100
Capacité maximale individuelle Unbalance @800Hz pair-to-ground	pF/500m	1700	1700	1700	1700
Capacité maximale individuelle Unbalance @800Hz pair-to-ground (for 95% cases)	pF/500m	1000	1000	1000	1000
Chef d'orchestre de résistance de boucle maximale@20°C	Ω/km	300	192	130	73
Impédance @1KHz	Ω	994	796	665	500
Impédance @100KHz	Ω	147	134	127	124
Impédance @512KHz	Ω	120	118	117.5	116.5
Impédance @1MHz	Ω	117	115	114.5	113.5
Maximum Moyenne Attenuation @0.8KHz	dB/km	1.64	1.30	1.1	0.9
Maximum Moyenne Attenuation @1KHz	dB/km	1.68	1.35	1.14	0.93
Maximum Moyenne Attenuation @3KHz	dB/km	3.18	2.52	2.3	1.74
Maximum Moyenne Attenuation@150KHz	dB/km	11.4	8.3	7.2	5.7
Maximum Moyenne Attenuation @772KHz	dB/km	24.3	19.4	17.4	13.1
Maximum Moyenne Attenuation @1000KHz	dB/km	27.1	21.4	18.5	13.7
Résistance diélectrique
Chef d'orchestre à l'orchestre (1min)	V DC	500	500	500	500
Chef d'orchestre à l'écran(1min)	V DC	1000	1000	1000	1000
Epaisseur d'isolation nominale	mm	0.175	0.20	0.25	0.3
Insulated Conductor Diamètre nominale	mm	0.75	0.90	1.1	1.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mechanical and Thermal Properties

Temperature range during operation (fixed state): -30°C – +70°C
Temperature range during installation (mobile state): -20°C – +50°C
Minimum bending radius: 10 x Overall Diameter (unarmoured cables);15 x Overall Diameter (armoured cables)

Colour Code
Standard colour code is per IEC 60708 given in Colour Code Chart

Dimensions And Weight
Solid PE Insulated & LAP Sheathed Air Core Cable to IEC 60708

Cable Code	Nombre de paires	Gaine Epaisseur minimum mm	Diamètre maximum mm	Poids nominal kg/km
0.4mm Conductor, 0.75mm Insulated Wire
TP708-2Y(L)2Y-10P04	10	1.5	9	71
TP708-2Y(L)2Y-20P04	20	1.5	10	107
TP708-2Y(L)2Y-30P04	30	1.5	11	143
TP708-2Y(L)2Y-50P04	50	1.5	13	211
TP708-2Y(L)2Y-70P04	70	1.5	15	278
TP708-2Y(L)2Y-100P04	100	1.5	17	380
TP708-2Y(L)2Y-150P04	150	1.5	21	548
TP708-2Y(L)2Y-200P04	200	1.8	23	708
TP708-2Y(L)2Y-300P04	300	1.8	28	1034
TP708-2Y(L)2Y-400P04	400	1.8	31	1358
TP708-2Y(L)2Y-500P04	500	2.0	35	1703
TP708-2Y(L)2Y-600P04	600	2.0	38	2016
TP708-2Y(L)2Y-800P04	800	2.5	43	2639
TP708-2Y(L)2Y-900P04	900	2.5	46	2961
TP708-2Y(L)2Y-1000P04	1000	2.5	48	3264
TP708-2Y(L)2Y-1200P04	1200	2.8	52	3873
TP708-2Y(L)2Y-1500P04	1500	2.8	58	4819
TP708-2Y(L)2Y-1800P04	1800	3.2	63	5777
TP708-2Y(L)2Y-2100P04	2100	3.2	68	6731
TP708-2Y(L)2Y-2400P04	2400	3.5	72	7645
TP708-2Y(L)2Y-2700P04	2700	3.5	76	8556
TP708-2Y(L)2Y-3000P04	3000	3.5	80	9466

 

 

 

 

 

 

 

 

 

 

 

 

 

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