Screened armored cable

ZTT MV underground power cables have excellent electrical properties, intended for use in power transmission and distribution substation systems with an industrial frequency rated voltage of 6-35kV, with special features on request like flame-retardant, water blocking, anti-termite, etc.

This type of cables are generally laid indoors, in tunnels and cable trenches and other places where certain radial mechanical external force or tension may happen.

STANDARD TAXNOMY

Cables are offered accords with different standards, IEC 60502-2, HD, NF C, NBR, AS/NZS, IRAM, GOST.

CONSTRUCTION

Conductor: Copper/aluminum wire, class 2 stranding
Conductor screen: Extruded semiconducting layer
Insulation: Cross-linked polyethylene(XLPE)
Insulation screen: Extruded semiconducting layer
Metallic screen: Optional of copper wire, copper tape
Inner sheath: Optional of Polyvinyl Chloride(PVC), Polyethylene(PE), Low Smoke Zero Halogen compound(LSZH)
Armor: Optional of aluminum wire, aluminum tape or laminated aluminum tape
Outer sheath: Optional of Polyvinyl Chloride(PVC), Polyethylene(PE), Low Smoke Zero Halogen compound(LSZH)

CHARACTERISTCS

Max. continuous temperature in operation: 90℃
Min. installation ambient temperature: 0℃
Min. bending radius: Single core 15 × OD, three core 12 × OD

Parameter of some products
Type: CU(AL)/XLPE/CTS/PVC, CU(AL)/XLPE/CTS/PE(LSZH)
Voltage level：6/10kV

Core No. X Nominal cross section (mm2)	Nom. Insulation thick.(mm)	Copper tape thick. (mm)	Nom. sheath thick. (mm)	Approx. overall diam. (mm)	Conductor max. DC resistance at 20°C (Ω/km)		Conductor short-circuit current （kA/1s）
Core No. X Nominal cross section (mm2)	Nom. Insulation thick.(mm)	Copper tape thick. (mm)	Nom. sheath thick. (mm)	Approx. overall diam. (mm)	Copper	Aluminum	Copper	Aluminum
1×35	3.4	0.12	1.6	20	0.524	0.868	5.01	3.31
1×50	3.4	0.12	1.6	21.2	0.387	0.641	7.15	4.73
1×70	3.4	0.12	1.7	23.2	0.268	0.443	10.02	6.62
1×95	3.4	0.12	1.7	24.8	0.193	0.32	13.59	8.98
1×120	3.4	0.12	1.8	26.4	0.153	0.253	17.17	11.35
1×150	3.4	0.12	1.8	27.8	0.124	0.206	21.46	14.18
1×185	3.4	0.12	1.9	29.8	0.0991	0.164	26.47	17.49
1×240	3.4	0.12	2	32.2	0.0754	0.125	34.34	22.69
1×300	3.4	0.12	2	34.4	0.0601	0.1	42.93	28.36
1×400	3.4	0.12	2.1	37.8	0.047	0.0778	57.23	37.82
1×500	3.4	0.12	2.2	43.6	0.0366	0.0605	71.54	47.27
1×630	3.4	0.12	2.4	47.6	0.0283	0.0469	90.14	59.56
1×800	3.4	0.12	2.5	52.1	0.0221	0.0367	114.47	75.64
3×35	3.4	0.1	2.3	40.4	0.524	0.868	5.01	3.31
3×50	3.4	0.1	2.4	43.2	0.387	0.641	7.15	4.73
3×70	3.4	0.1	2.5	47.2	0.268	0.443	10.02	6.62
3×95	3.4	0.1	2.6	51	0.193	0.32	13.59	8.98
3×120	3.4	0.1	2.7	54.2	0.153	0.253	17.17	11.35
3×150	3.4	0.1	2.8	57.4	0.124	0.206	21.46	14.18
3×185	3.4	0.1	2.9	61.6	0.0991	0.164	26.47	17.49
3×240	3.4	0.1	3.1	66.6	0.0754	0.125	34.34	22.69
3×300	3.4	0.1	3.2	71.6	0.0601	0.1	42.93	28.36
3×400	3.4	0.1	3.5	78.6	0.047	0.0778	57.23	37.82

Note: The above is only part of the product specifications and technical parameters, if you need detailed parameters, please contact our sales manager.

East African Crude Oil Pipeline (EACOP) Project (Contractor: Worley. End user: Total)