Home > Medium Voltage Power Cables > N2XSBY 8.7/15 (17.5) kV Copper XLPE insulated Steel tape armored Cable

N2XSBY 8.7/15 (17.5) kV Copper XLPE insulated Steel tape armored Cable

Application

Medium voltage cables for distribution networks.They are suitable for laying indoor,tunnel,cables trench and underground,it is able to bear external mechanical forces,but unable to bear heavy pulling force,it widely used in transformer stations,electric power plants and industrial plants.

Construction

Conductor: Copper,class2,circular compacted conductors
Conductor screen: Non-metallic,semi-conducting compound
Insulation: Cross-linked polyethylene (XLPE)
Insulation screen: Non-metallic,semi-conducting compound
Metallic screen: Copper tape
Inner sheath: Polyvinyl chloride(PVC)
Armour: Non-magnetic steel tape
Outer sheath: Polyvinyl chloride(PVC)

Main Characteristics

Good electrical and mechanical properties.
Minimal dielectric loss,high insulation resistance.

Specification

IEC 60228 Conductors of Insulated Cables.
IEC 60502-2 Power Cables with Extruded Insulation and Their Accessories for Rated Voltages from 1kV (Um=1.2kV)up to 30kV (Um=36kV)-Part 2: Cables for Rated Voltages from 6kV (Um=7.2kV) up to 30kV (Um=36kV).

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No.of Cores and Nominal Cross Section	Nominal Insulation Thickness	Nominal Steel Tape Thickness	Nominal Sheath Thickness	Approx. Overall Diameter	Approx.Weight		Max.D.C. Resistance of Conductor at 20℃
No.of Cores and Nominal Cross Section	Nominal Insulation Thickness	Nominal Steel Tape Thickness	Nominal Sheath Thickness	Approx. Overall Diameter	Cu	Al	Cu	Al
mm²	mm	mm	mm	mm	kg/km	kg/km	Ω/km	Ω/km
1×25	4.5	0.2	1.7	24.8	951	798	0.727	1.2
1×35	4.5	0.2	1.8	26	1090	879	0.524	0.868
1×50	4.5	0.2	1.8	27.1	1245	959	0.387	0.641
1×70	4.5	0.2	1.9	29	1516	1102	0.268	0.443
1×95	4.5	0.2	1.9	30.8	1825	1251	0.193	0.32
1×120	4.5	0.2	2	32.2	2108	1382	0.153	0.253
1×150	4.5	0.2	2	33.7	2417	1520	0.124	0.206
1×185	4.5	0.5	2.1	36.8	3183	2053	0.0991	0.164
1×240	4.5	0.5	2.2	39.3	3819	2352	0.0754	0.125
1×300	4.5	0.5	2.3	41.7	4497	2658	0.0601	0.1
1×400	4.5	0.5	2.4	44.8	5448	3079	0.047	0.0778
1×500	4.5	0.5	2.5	48.6	6623	3616	0.0366	0.0605
1×630	4.5	0.5	2.6	52.5	8142	4237	0.0283	0.0469

Application and case display

FAQ

What is the validity period for the offer of cable?

What is the application of Armored vs. Unarmored Cables?

How long is the validity period of cold shrink cable accessories?

Armored vs. Unarmored Cables?

What is the service life of cables?

How long is the validity period of cold shrink cable accessories?

The validity period for most cold shrink cable accessories is typically 3 years from the date of manufacture, provided they are stored under recommended conditions. These conditions usually include controlled humidity and temperature ranges.

What is the application of Armored vs. Unarmored Cables?

Armored cables are suitable for use in hazardous environments, such as underground installations, areas with high moisture levels, and areas prone to mechanical damage. Unarmored cables are suitable for less demanding applications, such as inside walls or other protected locations.

What is the purpose of a metallic shield in MV and HV cables?

Medium and high voltage power cables, typically those in circuits exceeding 2kV, usually feature a shield layer made of copper or aluminum tape. Similar to their use in low voltage cables, metallic wires and tapes are employed to prevent electromagnetic interference. These shields effectively neutralize or significantly diminish the field currents surrounding the conductor or core. The capacitive and inductive charging currents induced under normal operating conditions are subsequently grounded by the metallic screen.

How Do Water-Blocking Cables Work?

Water-blocking cables are essential for ensuring reliable operation in environments with high levels of moisture or frequent water contact. These cables employ water-blocking techniques to effectively prevent water ingress, protecting them from damage and prolonging their lifespan.

How do you calculate the minimum bending radius of cables?

The bend radius refers to the curved shape in which an electrical cable can be bent or curved without sustaining damage. To determine the minimum bend radius for cables, apply the following formula: Minimum Bend Radius = Cable Outer Diameter×Cable Multiplier. For example, if the outer diameter of a cable is 20mm, its minimum bending radius would be 20mm×6 = 120mm. Conversely, if an armored cable has an outer diameter of 30mm, its minimum bending radius would be 30mm×12 = 360mm.