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Home Products Branch cable

Branch cable

Home Products Branch cable

Branch cable

[ Branch cable ]

Branch cable

[ Product Overview ]

Branch cable (pre-branch cable) is a factory-prefabricated power distribution system, which consists of a trunk cable and multiple branch cables connected through a dedicated branch connector. The product has the characteristics of easy installation, high reliability, and space saving. It is particularly suitable for places that require multi-point power supply, such as high-rise buildings and large commercial complexes.

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Product Details

Economical

Safe and Reliable

High Insulation Strength

Easy Installation

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Product Categories

1. Classification by insulation material

model	name	Features
YFD-YJV	Cross-linked polyethylene insulated branch cable	Temperature resistance 90℃, large current carrying capacity
YFD-VV	PVC insulated branch cable	Low cost, suitable for general environment

2. Classification by branch structure

type	Schematic diagram	Applicable scenarios
Single point branch	◯─┬─◯	Standard floor power distribution
Multi-point branch	◯─┬─┬─◯	Core tube vertical power distribution
Reducing branch	◯─┬─◯（Big → Small）	Variable cross-section power supply

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Technical Parameters

Conductor system

Main cable cross section:

25-630mm²

Branch cable cross section:

4-300mm²

Conductor Material:

Annealed copper (resistivity ≤ 0.017241Ω·mm²/m)

Branch point spacing:

Standard 3m (customizable)

Insulation properties

In terms of cable performance parameters, there are differences in insulation resistance between YFD-YJV and YFD-VV cables. The insulation resistance standard of YFD-YJV cable is ≥1000MΩ・km, while that of YFD-VV cable is ≥500MΩ・km. The former has more advantages in insulation performance.

In terms of withstand voltage, the YFD-YJV cable needs to withstand a voltage of 3.5U₀+2kV for 5 minutes, and the withstand voltage requirement of the YFD-VV cable is 3U₀+2kV/5min. The standard setting of the withstand voltage performance of the YFD-YJV model cable is more stringent.

In terms of partial discharge parameters, the partial discharge of YFD-YJV cable needs to be controlled at ≤10pC, while that of YFD-VV cable is ≤20pC, which shows that YFD-YJV cable is better in reducing partial discharge phenomenon.

The comparison of these parameters shows that the two types of cables, YFD-YJV and YFD-VV, have their own standards in key performance indicators such as insulation, withstand voltage and partial discharge, and users can choose according to specific needs.

Mechanical properties

Branch joint breaking force:

≥60% of the main cable breaking force

Bending Radius:

≥12D (trunk)/8D (branch)

Flame retardant grade:

Category A (optional B1 level)

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Product Features

Prefabricated design

Factory-prefabricated branch joints avoid quality risks in on-site production

Each branch point is sealed by injection molding, protection level IP54

Safe and reliable

Branch joint temperature rise ≤30K (at rated current)

Passed 200 thermal cycle tests (-40℃~+90℃)

Easy installation

Save 60% installation time compared to traditional bus duct

No special tools required, supports "plug and play" installation

Smart optional

Can integrate temperature monitoring fiber optic (DTS system)

Support joint current monitoring (CT interface reserved)

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Typical Applications

In the cable laying of super high-rise buildings, it is recommended to use the YFD-YJV-4 (1300)+T4*120 solution, which can effectively reduce the space occupied by the shaft and optimize the internal structure layout of the building.

For data centers, the flame-retardant YFD-YJV22 cable is an ideal choice. This solution focuses on improving power supply reliability, ensuring continuous and stable operation of data centers, and avoiding data loss or equipment failure due to power problems.

In the hospital power distribution system, the low-smoke halogen-free YFD-WDZ cable stands out. This solution fully meets the hospital's strict fire protection requirements. When a fire occurs, it can reduce the release of smoke and toxic gases, buying precious time for personnel evacuation and rescue.

Due to the complex environment of industrial plants, it is recommended to use oil-resistant YFD-YJV62 cables. With excellent oil resistance and corrosion resistance, they can adapt to harsh environments such as oil pollution and chemical corrosion, and extend the service life of the cables.

These recommended cable solutions for different application scenarios are customized based on the special needs of each scenario, and show significant advantages in space utilization, power supply safety, fire protection performance and environmental adaptability.

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Selection Guide

Current matching principle

The branch cable current carrying capacity is ≥ 125% of the branch circuit calculated current

The current carrying capacity of the main cable is ≥ 70% of the sum of the currents of each branch

Voltage drop verification

Voltage drop at the farthest branch point ≤3% (power)/5% (lighting)

Environmental Adaptation

In the face of power demand in humid places, YFD-YJV22 cable should be selected, and through special armored waterproof treatment, it can effectively resist moisture intrusion and ensure safe and stable operation of the cable.

When in a corrosive environment, the YFD-YJV62 cable can resist the erosion of various corrosive substances due to the special design of stainless steel armor, enhancing the durability of the cable under harsh conditions.

In high-cold areas, YFD-YJY model cables are equipped with cold-resistant sheaths to effectively cope with low temperature environments, avoid hardening and brittleness of cable materials due to severe cold, and ensure that power transmission is not affected by climate.

Different environmental conditions correspond to different cable model selections and special treatment methods. These targeted measures provide strong guarantees for the normal operation of cables in complex environments.

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Installation Guidelines

Fixed spacing:

≤1.5m (trunk)/1.0m (branch) load-bearing bracket needs to bear 20 times the weight of the cable

Horizontal laying：

The maximum allowed span is 3m (less than 300mm²), and guide rollers are installed at the turns.

Special treatment:

Fire blocking is done when crossing fire partitions, grounding resistance ≤ 4Ω

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Quality Assurance

Implementation standard: GB/T 12706/JG/T 147

Warranty period: 25 years for trunk cables and 10 years for branch connectors. Provide technical guidance throughout the installation process

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Comparison with Traditional Solutions

In terms of installation time, branch cables show significant advantages. Compared with bus ducts, they can save 40% of installation time and greatly improve construction efficiency.

In terms of space occupancy, branch cables can reduce 30% of the space and effectively optimize the internal layout of the building; however, bus ducts occupy a large space and are limited in use in projects with compact space.

In terms of maintenance costs, branch cables stand out with their lower maintenance costs, making subsequent maintenance easy and economical; the maintenance cost of bus ducts is higher, and more resources need to be invested to ensure normal operation.

When it comes to renovation needs, branch cables usually need to be customized; bus ducts have adjustable flexibility and can more easily adapt to system renovation and upgrades.

By comparing dimensions such as installation time, occupied space, maintenance cost and transformation flexibility, it can be clearly seen that branch cables and bus ducts have their own advantages and disadvantages, and the choice must be made based on actual needs during engineering design.

Service Support

Customization

Provide free cable routing design drawings and support 3D model pre-assembly verification

Test report

Provide third-party type test reports, including special tests such as partial discharge and thermal cycle

Emergency Response

Provide spare cables within 48 hours and establish full life cycle archives

Notes:The specific parameters need to be calculated and determined according to the actual situation of the project. It is recommended to entrust a professional design institute to conduct the selection and verification. This product can provide special models such as flame retardant grade A and fire resistant 950℃/3h according to project requirements.

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Branch cable

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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

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Material Supply and Transportation Service

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Installation Guidance

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Issue Resolution and On-site Service Response Time

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Warranty Period and Quality Assurance Commitment

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Product