HV Busway 40.5KV 6300A

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Description

 

The HV Busway 40.5kV 630A–6300A is a high-voltage busduct system designed to efficiently distribute electrical power at medium-voltage levels in industrial facilities, substations, and infrastructure projects.

This busway system is engineered to replace traditional cable trays and improve safety, flexibility, and energy efficiency in medium-voltage (MV) networks.

With fully enclosed, insulated conductors, the HV busway ensures low loss, high short-circuit strength, and safe modular connections for modern electric power distribution systems.

 

GB/T 8349 GFM non — segregated busway, 630A — 6300A, 3.6 — 40.5KV

GFM Series non-segregated phase busway is suitable for transmission system, which provides consistent strength and high short-circuit ratings.

 

Advantages:

  • This system provides consistent strength and high short-circuit ratings. Under the protection of the enclosure made of aluminum or low magnetic plate, no hysteresis loss occurs on the distribution system with low temperature rise on housing, reduce energy loss on the whole system.
  • The hole for installation or maintenance can be set up at top or bottom of GFM, ventilated shutter can be set up on both side and bottom of the enclosure to improve heat dissipation.
  • Flexible braided straps are applied to eliminate the vibration of connected equipment. Rubber gaskets are adopted as shock absorber in the system to provide the elastic support to the insulator and the conductor. Moreover, the shock absorber can avoid the machinery vibration caused by equipment and the damage caused by earthquake.
  • In winter, segregation device can be applied in the wall to avoid condensation happened due to temperature variation between indoor and outdoor in winter.
  • Silver-plating is applied to all joint and connection area. Silver-plating provides an extremely durable contact surface with better performance of lower contact resistance and anti-corrosion.
  • In order to avoid the resonance frequency range of the busbar and to reduce the electric power acting on the busbar, the type, specification and strength level of the insulator are preferred, and the span between the insulators is reasonably set.
  • Observation window can be installed in the connection area of busduct and transformer cabinet and generator cabinet, distribution cabinet so as to monitor the temperature rise by means of temperature measurement device or online intelligent monitoring system, which greatly improve the level of safety and reliability of operation and maintenance.

Parameters

 

NO.ItemTech data
1Conductor TypeEnclosed busduct
2Rated Current630A—6300A
3Frequency50Hz/60Hz
4Rated Voltage3.6-40.5KV
5IPIP54
6CertificationUL,KEMA,ASTA,CE,GOST-R,CEDIT,TUV
7Design CriteriaGB/T 8349
8Product TypeTMY/LMY
9Product SeriesNonsegregated busduct/ Segregated phase busduct

Solutions

 

Applications of 40.5kV HV Busway in Industrial Power Systems

The 40.5kV HV busway is a critical solution in high-capacity infrastructure requiring reliable, low-maintenance, and space-efficient power transmission.

 

Common applications:

  • Transformer-to-switchgear interconnections
  • Power centers and modular substations
  • Oil & gas facilities and offshore platforms
  • Industrial manufacturing plants
  • Mining and metallurgical processing plants
  • Chemical and pharmaceutical factories
  • Data centers and smart infrastructure projects
  • Wind, solar, and hydroelectric power generation

 

Key Features:

FeatureBenefit in High-Voltage Environments
Rated Voltage: 40.5kVIdeal for medium-voltage transmission and large-scale distribution
Current Rating: 630A–6300ASuitable for heavy industrial loads and long-distance transmission
Conductor OptionsHigh-purity copper or aluminum conductors
Fully Insulated ConstructionEpoxy-coated or air-insulated options available
High Short-Circuit WithstandWithstands up to 100kA peak currents
IP Enclosure OptionsIP40, IP55, IP65 for indoor and outdoor installations
Modular DesignEasy to install, extend, or maintain without downtime
Minimal Voltage DropLow impedance path ensures energy efficiency over long runs
Certified Safety ComplianceBuilt to IEC 62271-201, GB/T 7251.6, and IEEE standards

 

Why Choose HV Busway Systems for 40.5kV Industrial Applications?

1. Space-Saving and Scalable

Compared to traditional MV cable systems, the busway offers a compact footprint, clean routing, and modular expandability without trenching or large cable trays.

2. Energy-Efficient Power Transmission

Designed with low impedance and minimal skin effect, HV busways significantly reduce power loss over long distances—ideal for large-scale industrial zones.

3. Safe and Reliable Under Harsh Conditions

With full insulation and high short-circuit strength, the system is highly resistant to electrical faults, moisture, dust, and corrosive gases.

4. Quick and Cost-Effective Installation

Factory-assembled components with plug-in joints and prefabricated sections drastically cut down labor, installation time, and site error.

 

HV Busway vs Traditional Cable Systems

AspectHV BuswayCable System
Installation SpeedFast, modular plug-in systemTime-consuming trenching and routing
Maintenance AccessEasy, front/top serviceableComplex, requires cable disconnection
SafetyFully enclosed and insulatedRequires external insulation handling
System FlexibilityHigh (easy to extend or modify)Limited; rewiring needed for changes
FootprintCompact, neat alignmentBulky trays and ducts
Energy LossLow impedance, minimal lossHigher voltage drop over long distances

The HV busway is the modern, efficient alternative for safe 10kV power distribution in demanding industrial and infrastructure environments.

 

Why Choose Our HV Busway Systems:

  • High-performance copper or aluminum conductor options
  • Modular straight sections, elbows, T-joints, and tap-offs
  • Fully enclosed and IP-rated for any installation environment
  • Customizable lengths, layouts, and joint systems
  • Compliant with global standards: IEC, GB/T, CE, RoHS, UL

 

We supply turnkey 40.5kV busway systems engineered for high-reliability and heavy-duty industrial performance.

Our solutions are trusted by EPC contractors, power utilities, and OEM integrators worldwide.

  • Available in multiple enclosure types and ratings
  • Supports single or dual-ended supply systems
  • Full system packages: straight duct, elbows, tap-off units, joints
  • Installation design support, 2D/3D CAD drawings, and technical consultation

 

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METTZ Group stands as a consortium of Chinese electrical firms, renowned for its expertise in manufacturing electrical equipment. We are specialized in crafting a comprehensive suite of transmission and distribution equipment, covering a wide voltage range from 0.4 to 40.5 kV. Our commitment lies in delivering reliable and stable products to our clientele, encompassing vacuum circuit breakers (VCB), gas-insulated switchgear modular units (RMU), solid insulated switchgear (SIS) panels, air insulated switchgear (AIS) panels, and dry compressed air insulated switchgear panels (DIS) and components for each type of products.

Since our inception, METTZ Group has been at the forefront of adopting international cutting-edge technologies and equipment. We pride ourselves on our extensive collaboration and dialogue with leading experts in the electrical technology sector, both within China and internationally. Our offerings are tailored to meet the specific needs of our clients, including Original Equipment Manufacturer (OEM) services, customization of products to unique parameters and dimensions, all in alignment with our customers’ specifications.

METTZ Group is dedicated to innovation, quality, and customer satisfaction, ensuring that we remain a preferred partner for electrical equipment solutions worldwide.

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