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Medium voltage power cable

Medium voltage power cable

Medium voltage power cable0
Medium voltage power cable1

[ Power Cable ]

Medium voltage power cable

[ Product Overview ]

  • Medium voltage cables are suitable for 6kV~35kV medium and high voltage power transmission systems, and are mainly used in urban power grids, industrial power supply, new energy power generation (wind power, photovoltaic) and other fields. They have the characteristics of high insulation strength, high temperature resistance, and anti-interference, and can meet a variety of laying methods such as direct burial, tunnels, cable trenches, and overhead.
All Product Categories
Details
Product Details
Economical
Safe and Reliable
High Insulation Strength
Easy Installation
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Product Categories

type Model examples Main Features Typical Applications
Cross-linked polyethylene insulation (XLPE) YJV (copper core), YJLV (aluminum core) High temperature resistance (90°C), high current carrying capacity Urban power grid, substation outgoing line
Armored Type

YJV22、YJLV22

Steel belt armor, compression and impact resistance Direct burial, tunnel laying
Flame retardant/fire resistant

ZR-YJV、NH-YJV

Flame retardant (Class A/B/C), fire resistant (950°C/3h) Subways, high-rise buildings, chemical plants
Waterproof

YJSV、YJLSV

Longitudinal water-blocking structure, excellent moisture-proof performance Underwater, wet environment
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Voltage Level

  • Medium voltage cable (6kV / 10kV / 20kV / 35kV)
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Technical Parameters

01
General electrical parameters
Rated voltage:

6kV / 10kV / 20kV / 35kV

Conductor Material:

Copper (Cu) or Aluminum (Al)

Conductor cross-section range:

Copper core: 25~1000mm² Aluminum core: 35~1200mm²

Insulation Material:

XLPE (cross-linked polyethylene)

Insulation Thickness:

3.4mm(10kV)、4.5mm(35kV)

Shielding:

Copper tape shield (≥35mm²) or copper wire shield (<35mm²)

Sheath Material:

PVC / PE / LSZH (Low Smoke Zero Halogen)

Sheath Thickness:

2.0~3.5mm (depending on voltage level)

Long term working temperature:

90°C(XLPE)

Short circuit withstand temperature:

250°C(5s)

02
Mechanical and Environmental Performance
In terms of bending radius, the bending radius requirement for single-core cable is ≥15 times the cable diameter, and for multi-core cable is 12 times the cable diameter.
 
In terms of tensile strength, XLPE insulation must reach ≥12MPa, and the sheath must also meet ≥10MPa
 
In terms of weather resistance, it needs to pass the 3.5U₀ test. For example, a 10kV cable needs to withstand a 21kV voltage for 5 minutes.
 
Partial discharge: At a voltage of 1.5U₀, the partial discharge should be ≤10pC.
 
There are abundant choices of flame retardant grades, and you can choose ZA halogen-free type, ZB low-smoke type or ZC ordinary flame retardant type according to actual needs.
 
03
Current carrying capacity reference (10kV XLPE copper core cable, ambient temperature 25°C)
When the cable cross-section is 70mm², the current carrying capacity of air laying can reach 250A, and the current carrying capacity of direct burial laying is 210A.
 
When the cable cross-section is 150mm², the current carrying capacity for air laying can reach 380A, and the current carrying capacity for direct burial laying is 320A
 
When the cable cross-section is 300mm², the current carrying capacity for air laying can reach 580A, and the current carrying capacity for direct burial laying is 480A
 
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Product Features

01
High insulation performance
XLPE cross-linked polyethylene insulation with dielectric strength of ≥20kV/mm reduces the risk of breakdown. Copper tape/copper wire shielding effectively balances the electric field and reduces partial discharge.
 
02
Strong mechanical protection
Steel belt armor (YJV22) Compression resistance ≥4000N/100mm, suitable for direct burial and complex environments. Water-blocking structure (YJSV) Prevents moisture penetration and extends cable life.
 
03
Safe and reliable
Flame retardant/fire-resistant models Pass GB/T 19666 and IEC 60331 standards to ensure power supply continuity in fire environments. Low smoke zero halogen (LSZH) sheath No toxic smoke when burning, suitable for public places such as subways and hospitals.
 
04
Long life design
UV and ozone resistant, outdoor service life >30 years. Anti-ant and anti-rodent models are available (insect repellent is added to the sheath).
 
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Application Scenarios

Urban power grid:

10kV YJV cable is used for underground pipe corridors and substation outgoing lines.

Industrial power supply:

35kV YJV22 armored cable is used for high voltage power distribution in steel mills and chemical plants.

New energy power generation:

Photovoltaic power station: PV1-F 1.8kV/3kV DC cable. Wind farm: twist-resistant wind power cable.

Special environment:

Submarine cable (waterproof type YJQF41). Mining high voltage cable (MYJV42, impact resistant).

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Installation Guidelines

  • When burying directly, sand cover is required and the burial depth should be ≥0.8m (anti-freeze is required in the north).
  • Bending radius ≥15D (single core)/12D (multi-core) to avoid mechanical damage.
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Storage Conditions

  • Avoid high temperature and humidity, and seal the cable ends to prevent moisture.
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Product Packaging

  • Packaging: wooden or steel shaft, length is usually 500m (35kV), 1000m (10kV and below)
9
Quality Assurance

  • 18 months from the date of manufacture (installed and used in accordance with specifications).

Workshop

Workshop Display

[ Building a Century-Old Zhongbang ]

After-sales Service

After-sales Service

After signing the contract, our company will conduct on-site inspections of the product’s usage environment, provide product technical data sheets, installation manuals, and answer any customer inquiries. We offer high-quality configuration plans based on product characteristics and the environment.

We guarantee timely supply upon receiving the delivery notice, ensuring the product quality meets customer requirements. Our professional after-sales team will transport the products to the specified location and assist with acceptance and storage instructions.

Before installation, we provide technical training and installation guidance to ensure the product meets customer environment and technical performance requirements.

Our after-sales service department offers 24/7 support. We will respond to customer issues promptly and provide solutions. For on-site service, within the city, technicians will arrive within 3 hours, and for out-of-city locations, within 6 hours, to provide excellent technical support.

Our products come with a 5-year warranty, with a lifespan of no less than 40 years under normal use. During the warranty period, we will provide free repair or replacement for any product-related issues and assume all associated responsibilities.

Technical Service

001

Material Supply and Transportation Service

002

Installation Guidance

003

Issue Resolution and On-site Service Response Time

004

Warranty Period and Quality Assurance Commitment

005

Contact

Contact Us

You can contact us in 4 ways, and we'll respond to your inquiry as soon as possible!

1. Call

2. Send Email

3. Leave Message

4. Add WeChat or WhatsApp

Email

info@cnyjcable.com

WeChat

+86 13229117778

Phone

+86 13229117778

WhatsApp

+86 15133107839

Address

Sima Industrial Park, Ningjin County, Hebei Province