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CSA C68.3 Cable, Medium Voltage Cable, Building Cable

35kV CU XLPE AWA/SWA PVC Armoured Cable

1. Single core or 3-core , Copper conductor , XLPE insulation armoured cable generally in accordance with CSA C68.3 .

2. Certificates
ISO 9001 , ‌ISO 14001, ‌ISO 45001

 

Application

Medium-voltage armoured cables (5kV ~ 35kV) are widely used in the following scenarios:

Municipal Power Grid: Urban main distribution lines, ring main circuits and power supply for residential & commercial zones, commonly laid directly underground, in cable trenches or municipal utility tunnels.


Industrial Facilities: Power feeders, main power circuits and interconnection lines in factories, petrochemical plants, metallurgical works, mines and power stations, resistant to mechanical stress and mild corrosion.


Large Public Buildings: Power connection between distribution rooms, box transformers and high-voltage cabinets in shopping complexes, hospitals, data centers and large buildings, installed on cable trays or in vertical shafts.


Transportation Hubs: Medium-voltage power supply for rail transit, airports, ports, logistics parks and gas stations, suitable for outdoor and semi-outdoor environments.


Harsh Environments: Buried sections vulnerable to rodent damage, compression and vehicle rolling, as well as coastal areas and sites with slightly acidic/alkaline soil

Characteristics

Voltage Rating Uo/U (Um)
35kV

Temperature Rating:
Maximum operating temperature of conductor: +90℃
Ambient temperature for service: -15℃ ~ +55℃

Cable laying temperature:
Not lower than 0℃ (Preheat the cable if the ambient temperature is below 0℃).

Minimum Bending Radius During Laying
Single-core cable: 15D
Three-core cable: 12D
D refers to the actual outer diameter of the cable.

Laying Methods:
Conduit laying, trench laying, tunnel laying, shaft laying, cable tray laying, etc.

Products Construction

Conductor
Circular compacted copper conductor

Conductor Screen
Semi-conductive compound
Semi-conductive tape+semi-conductive compound

Insulation
Cross-linked polyethylene (XLPE) or EPR

Insulation Screen
Strippable semi-conductive compound

Metallic Screen
Copper tape

Filler
Non-hygroscopic filler ropes

Wrapping Tape
Non-hygroscopic binding tape

Armour
Single-core: Stainless steel wires
Three-core: Galvanized steel wires

Inner & Outer Sheath
90℃ PVC (Non-fire-retardant type)
90℃ Fire-retardant PVC (Fire-retardant type)

Core Identification
Single-core: None
Three-core: Colour tape

Sheath Colour
Black Red

Cable Drawing :

Applicable Standards

CSA C68.3
Flame Retardant according to IEC/EN 60332-1-2 , IEC/EN 60332-3

Optional

Flame retardant grades optional, fire resistance customizable.
Water-blocking tape can be added to the conductor
Anti-termite
Anti-rodent
Oil Resistance
UV Resistance

Technical Parameters

8.7/15 KV Three Cores Copper XLPE Insulated Power Cable
Size
mm2
Nominal Insulation Thickness mmArmour Size (mm)Approx.Overall Dia (mm) & Weight (kg/km)Recommended Current Rating
A
Min.
Steel Tape Thickness
Steel Wire Dia.YJVYJYYJV22YJV23YJV32YJV33
Dia.WeightDia.WeightDia.WeightDia.WeightDia.WeightDia.WeightIn soilIn air
254.50.22.546.3218346.3202851.3330851.3312854.5479754.54598156144
354.50.22.548.7258548.7241553.7376553.7356956.9529756.95081186175
504.50.22.551.3312651.3293956.5439356.5417959.7601559.75780220210
704.50.22.555.2388555.2367560.4524660.4500763.6699963.66739269263
954.50.22.558.9477558.9454364.3625564.3599267.5810467.57818322319
1204.50.22.562.2564762.2539367.8723867.86951719191718880365368
1504.50.22.565.9668465.9640671.5836771.5805474.71045574.710117410419
1854.50.23.1569.7786469.7755975.7970775.7935580.21278180.212396463480
2404.50.23.1575.3969075.3934081.31168081.31128886151098614671535565
3004.50.23.158011623801123687.51465187.51420590.81737290.816896602647
4004.50.23.1587.61487287.61441495.41822895.41770198.72119798.720638683751
8.7/15KV Three Cores Aluminium XLPE Insulated Power Cable
Size
mm2
Nominal Insulation Thickness mmArmour Size (mm)Approx.Overall Dia (mm) & Weight (kg/km)Recommended Current Rating
A
Min.
Steel Tape Thickness
Steel Wire Dia.YJLVYJLYYJLV22YJLV23YJLV32YJLV33
Dia.WeightDia.WeightDia.WeightDia.WeightDia.WeightDia.WeightIn soilIn air
254.50.22.546.3170646.3155151.3283151.3265154.5432054.54121121112
354.50.22.548.7191848.7174753.7309853.7290256.9463056.94414144135
504.50.22.551.3217251.3198556.5344056.5322559.7506259.74826171163
704.50.22.555.2254955.2234060.4391160.4367263.6566463.65403209203
954.50.22.558.9296358.9273164.3444364.3418067.5629267.56006250247
1204.50.22.562.2335862.2310467.8495067.84662716902716591284285
1504.50.22.565.9382365.9354571.5550671.5519374.7759474.77256318325
1854.50.23.1569.7433569.7403175.7617975.7582680.2925280.28867361373
2404.50.23.1575.3511375.3476281.3710281.3671186105328610094418440
3004.50.23.1580590080551487.5892987.5848390.81165090.811174472506
4004.50.23.1587.6724287.6678495.41059895.41007298.71356898.713009540592

FAQ

How to select armoring wires for single-core and multi-core cables? What are the key differences in selection criteria between them?

Multi-core Power Cables
Galvanized steel wire armoring is the preferred choice. The vector sum of three-phase currents in multi-core cables is nearly zero, so no significant eddy current loss occurs on the armor. Steel wire features high mechanical strength, excellent compression resistance, tensile resistance and external damage protection.
Single-core Power Cables (AC System)
Ordinary steel wire armoring is strictly prohibited. When alternating current flows through a single-core cable, eddy currents will be induced in the metal armor, leading to severe overheating and power loss, and even accelerating insulation aging and causing cable failures. Adopt non-magnetic stainless steel wire/tape , aluminum wire , aluminum alloy wire or aluminum tape armoring to avoid eddy current issues.

How to select the armoring type for medium voltage armored cables? What are the differences between steel tape armoring and steel wire armoring?

Steel Tape Armoring (STA): Suitable for direct burial and tunnel laying, with strong resistance to lateral pressure and lower cost. Ordinary steel tape not allowed for single-core AC cables, as eddy current will cause overheating, reduce current-carrying capacity and even lead to cable burnout.
Steel Wire Armoring (SWA): Features high tensile strength, ideal for vertical shaft, underwater and vertical laying. Non-magnetic steel wire can be used for single-core cables, while its lateral pressure resistance is weaker than steel tape.
Selection principle: For single-core AC medium voltage cables, prioritize non-magnetic armoring materials (stainless steel wire, aluminum alloy wire). For three-core cables, steel tape or steel wire armoring can be selected as required.

What key points shall be noted when directly burying medium voltage armored cables?

Lay 10cm fine sand cushion at the bottom of the trench, and cover another 10cm fine sand above the cable after laying to prevent the armor from being scratched by hard objects.
Install concrete protection slabs or warning tapes above the cable to avoid external mechanical damage.
Metal conduits must be installed when crossing roads and buildings, and both ends of conduits shall be sealed for waterproofing.

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