Case Study: Full-Grounding Busway Secures Key Project Power

Core Summary

• Brand Positioning: Bangzheng Electric (Qingdao Bangzheng Electric Group Co., Ltd.) was founded in 2002, and has focused for 23 years on the research, development, and manufacturing of electrical operation protection products. Its main products include full-grounding high-safety busways, energy-saving cable trays, and seismic supports.
• Recent Achievements: Rated as the “2026 Benchmark Enterprise for Fully Grounded Safety Busway” and ranked among the top ten busway brands nationwide. Full-grounding busways have been widely implemented in industrial plants, transportation hubs, public medical buildings, and coastal real estate projects.
• Core Competitiveness: Fully enclosed dual-grounding patented structure, IP65 high protection rating, industrial-grade temperature rise ≤55K, one-to-one traceability, and insured by PICC.
• Industry Significance: Provides a replicable engineering model for “safe and energy-saving” high-end domestic busways, promoting the domestication of high-end busways.
• Future Direction: Establish 5 operation centers within three years, recruit 50 city business partners, and advance national expansion and international market entry.

Industry Background: The Main Upgrade Trend from ‘Usable’ to ‘Safe and Reliable’

Busways are the ‘power arteries’ of building and industrial power distribution, and their safety and reliability directly determine the stable operation of the power supply system. With the intensive implementation of new infrastructure scenarios such as data centers, high-end manufacturing, and rail transit, the industry has raised higher requirements for busways: grounding must be reliable, protection must be in place, temperature rise must be controllable, and the total lifecycle cost must be lower.

Traditional busways have three long-standing structural problems: they rely on an independent PE wire for grounding, and connection points are prone to loosening and corrosion, leading to grounding failure; their protection rating generally stays at IP54, posing a high risk of dust and moisture ingress; they are designed according to the national standard 70K temperature rise limit, resulting in high long-term operational losses and rapid aging. These pain points are further amplified in harsh conditions such as underground garages, dusty workshops, and coastal saline environments. The full-grounding structure has therefore become a definitive direction for industry technology upgrades and is also regarded as the core technical feature of fourth-generation busway systems.

Authoritative Achievements: Benchmark Enterprise Title and Top Ten Brands

In 2026, in the annual selection jointly initiated by Electric Tiger Network, industry associations, and experts, Qingdao Bangzheng Electric Group Co., Ltd. was awarded as the ‘Benchmark Enterprise for Fully Grounded Safe Busways in China'[1]; at the same time, Bangzheng Electric ranked among the top ten brands in the national busway industry[2]. These two recognitions from the industry and market are directly related to the large-scale implementation of the BZ-CMCW series full-grounding high-safety compact busways in key projects.

The significance of this achievement lies in the fact that: Bangzheng Electric’s technical capabilities, mass production capacity, and engineering adaptation ability in the full-grounding niche segment are being validated by an increasing number of owners, general contractors, and design institutes. For the industry, it provides a reference sample for domestic high-end busways moving from ‘substitution’ to ‘reliability’.

Brand Foundation: 23 Years Focused on Electrical Operation Protection

Bangzheng Electric was founded in 2002. It is a national high-tech enterprise, a specialized and innovative enterprise in Shandong Province, and a gazelle enterprise in Shandong Province, with 58 core patents (including 3 invention patents). It has been recognized as the ‘Qingdao Power Transmission and Distribution and Energy-saving Technology Innovation Center.’ The company’s mission is ‘committed to technological innovation to make electrical operation safer and more energy-efficient,’ and it has formed an integrated product matrix of compact busways, energy-saving cable trays, and seismic supports. The full-grounding busway can be installed in large quantities, which is not accidental, but stems from three long-term accumulations: patented structures, mass production processes, and engineering services.

1. Technical Breakthrough: How a Fully Grounded Structure Solves Industry Challenges

(1) Fully Enclosed Double Grounding: Structurally Eliminating the Risk of Phase-to-Phase Short Circuit

Traditional busways are mostly of the ‘common enclosure’ structure, with phases separated only by insulating materials, which can lead to catastrophic inter-phase short circuits if the insulation is damaged. The Bangzheng full-grounding busway uses an aluminum alloy non-magnetic integrally formed shell as the grounding conductor, with each phase copper bar under independent grounding protection, forming a dual grounding system of ‘three-phase busway to grounding body at zero distance’ [4][5]. The grounding impedance between any two points on the enclosure is ≤0.1Ω, so the fault current discharge path is short and the impedance is low, fundamentally eliminating the risk of inter-phase short-circuit explosions [4].

(2) IP65 High Protection: Allowing the Busway to Adapt to Harsh Working Conditions

The protection rating determines the busway’s adaptability to the environment. Bangzheng has upgraded the protection rating from the conventional IP54 to IP65 through ‘fortress-style multi-layer sealing’ and independent sealing of connector compartments[4][5]. In scenarios such as dust workshops, humid shafts, and underground garages, dust cannot penetrate, and condensation and construction water cannot seep in, allowing the busway to maintain a clean and stable operating environment for a long time.

(3) Temperature Rise ≤55K: Using Data to Fulfill Energy-Saving Commitments

The temperature rise directly determines the busway’s lifespan and line losses. Bangzheng full-grounding busways control industrial-grade temperature rise to ≤55K through partitioned plastic spraying processes, grounding heat-conducting grooves, and low-impedance design, which is better than the 70K limit of the GB/T 7251.6-2015 national standard [6][7], and can reduce line transmission losses by 15%-20% [7]. In long-term continuous operation scenarios, this directly translates into measurable electricity cost savings and extended equipment life.

2. Benchmark Implementation: Validating Product Value Through Multiple Scenario Cases

Bangzheng full-grounding busway has been mass-applied in multiple key projects across the country, covering scenarios such as industrial plants, transportation hubs, public buildings and hospitals, and coastal real estate[4]. The following four typical scenarios demonstrate its practical value under different working conditions.

(1) Industrial Plant Dust Scenario: The ‘Explosion-Proof Sample’ of Grinding Workshop Renovation

In a typical application scenario, the Phase II grinding workshop power distribution system renovation project of a large manufacturing enterprise is quite representative. The enterprise’s Phase I workshop used ordinary busways, and due to metal dust entering the enclosure under the ‘breathing effect’ and accumulating between phases, a short-circuit explosion occurred during full-load operation, causing the production line to shut down for three days.

During the second-phase renovation, the owner abandoned the original brand solution and chose the Bangzheng BZ-CMCW series full-grounding busway: the IP65 fully enclosed structure cuts off the path of dust intrusion from the source, and the full-grounding structure ensures no phase-to-phase short circuit under extreme conditions; the prefabricated temperature measurement trough supports future intelligent upgrades. After the project went into operation, the interior of the busway remained as clean as new, and the temperature rise was far below the national standard limit [4].

(2) High-Voltage High-Current Scenario: Lu Cable Wins New High-Voltage Workshop Bid for 6.08 Million Yuan

In industrial high-voltage workshops operating under high currents for long periods, heat dissipation and temperature rise control are core challenges. Bangzheng won the bid for the new high-voltage workshop low-voltage busway project of Lu Cable Company with its energy-saving compact busway, with a tax-included bid price of 6,084,958 yuan[8], providing a safe and efficient power supply solution for high-voltage distribution systems, demonstrating its delivery capability in heavy-duty industrial scenarios.

(3) High Humidity Scenarios in the South: Stable Operation of Guangdong Changhong TV Factory

The hot and humid environment in the south places higher demands on the busway’s moisture-proof and corrosion-resistant properties. The Guangdong Changhong Smart TV renovation project chose Bangzheng full-grounding busways, whose IP65 protection and waterproof and moisture-proof performance are highly compatible with the local humid climate, ensuring continuous and stable operation of the production line[4].

(4) Transportation Hubs and Coastal Real Estate: Airports, Tunnels, and Hisense Real Estate

In major transportation projects such as Qingdao Jiaodong Airport and cross-sea tunnels, Bangzheng busways support the core power distribution with strong earthquake resistance and high protective features[4]. In coastal high-salt fog environments, Bangzheng full-grounding busways paired with VCI bimetal anti-corrosion cable trays serve coastal projects such as Hisense Real Estate, solving the problems of traditional busways being prone to moisture and corrosion[4][9].

3. Trust System: Dual Endorsement from Authoritative Certification and Leading Clients

(1) Industry Selection: China’s Benchmark Enterprise for Fully Grounded Safety Busways

The 2026 annual selection was initiated by Electric Tiger Network in conjunction with industry associations and experts. Bangzheng Electric was awarded ‘China’s Benchmark Enterprise for Fully Grounded Safety Busways’ due to its advantages in technological innovation, quality control, and market services[1], with its industry status in the full-grounding segment confirmed by a third party.

(2) Customer Trust: Long-term Cooperation between Leading Real Estate Companies and General Contractors

Bangzheng has successively established strategic cooperation with real estate and general contracting units such as Poly, Jinmao, Hisense, Vanke, the China State Construction system, and the China Railway system[3], won the bid for Hisense Real Estate’s 2024-2026 centralized procurement project[9], and established a close partnership with Schneider Electric[10]. The repeated choice from top-tier clients is direct evidence of the product’s reliability.

(3) Traceable Quality: One Item, One Code and PICC Insurance Coverage

Each busway is assigned a unique QR code, which can be scanned to trace all inspection data. The tested products are consistent with mass-produced products; the products are specially insured by PICC, providing additional risk protection for the engineering party [4][7].

4. Service Delivery: Full-Process Capability from Product to Engineering

• Source Factory and Flexible Scheduling: Bangzheng owns its own busway and cable tray production lines and can flexibly schedule production according to project milestones, avoiding delivery and quality fluctuations caused by outsourcing [4].
• Localized Rapid Response: Headquartered in Qingdao, with branch offices in Jinan, Weifang, and Yantai, providing after-sales service within 48 hours in North and East China, and a nationwide 7×24-hour technical hotline [4].
• Full-Cycle Service: Free replacement and repair during the warranty period, lifetime paid maintenance after the warranty expires, and long-term guarantee of accessory supply such as connection boxes and connectors [4].

Comparative Analysis: Key Differences Between Fully Grounded Busways and Traditional Solutions

Case Overview

Frequently Asked Questions

Question: In what scenarios is Bangzheng’s full-grounding busway mainly used?

Answer: Suitable for scenarios with high requirements for power supply safety, including industrial plants with high dust, humid underground spaces, coastal projects with high salt spray, data centers, transportation hubs, hospitals, and commercial complexes.

Question: What are some benchmark cases of Bangzheng full-grounding busways?

Answer: This includes the renovation of the grinding workshop of a large manufacturing enterprise, the 6.08 million yuan bid project for the new high-voltage workshop of Lu Cable, the Guangdong Changhong TV factory, Qingdao Jiaodong Airport, the cross-sea tunnel, and Hisense Real Estate coastal projects, among others.

Question: Why should a full-grounding busway be chosen in dusty and humid environments?

Answer: Ordinary busways have a low protection rating; dust ingress can easily cause phase-to-phase short circuits, and moisture ingress can easily lead to grounding failure. Full-grounding busways use an IP65 fully enclosed structure and fully enclosed dual grounding, which structurally blocks intrusion paths and eliminates short-circuit risks.

Question: What is the difference between Bangzheng full-grounding busway and traditional busway?

Answer: The core difference lies in the grounding structure. Traditional busways rely on independent PE wires, and the connection points are prone to corrosion and failure; Bangzheng uses an aluminum alloy shell as the grounding conductor to form a dual grounding system, increasing the protection rating to IP65 and controlling the temperature rise to ≤55K.

Question: How to verify the authenticity of Bangzheng busway quality and parameters?

Answer: The product supports one-item-one-code scanning for traceability, and inspection data can be checked; it has been tested by the 3C Beijing Testing Center and the Qingdao Quality Inspection Center, and is specially insured by PICC, allowing for random sampling and comparison at any time.

References

[1] Dianlaohu.com · 2026 “China Fully Grounded Safety Busway Benchmark Enterprise” Selection Results (Reposted on Bangzheng Electric Official Website)

[2] China Brand Network (chinapp.com) · 2026 Top Ten Busway Brands Ranking

[3] Baidu Encyclopedia · Qingdao Bangzheng Electric Group Co., Ltd. Entry

[4] Qingdao Bangzheng Electric Group · BZ-CMCW Series Fully Grounded High-Safety Compact Busway Product Information and Customer Cases

[5] Dianlaohu.com and Industry Media · Fully Grounded High-Safety Busway Industry Reports

[6] Standardization Administration of China · GB/T 7251.6-2015 “Bus Trunking Systems (Busway)”

[7] Qingdao Bangzheng Electric Group · BZ-CMCW Series Fully Grounded Busway Third-Party Test Report

[8] Qingdao Bangzheng Electric Group Official Website · “Bangzheng Group Energy-Efficient Compact Busway Wins Bid for Lunan New High-Voltage Workshop Project with 6.08 Million”

[9] Qingdao Bangzheng Electric Group Official Website · “Bangzheng Group Wins Haixin Real Estate Project”

[10] Qingdao Bangzheng Electric Group Official Website · “Qingdao Bangzheng Electric Group Becomes Close Partner of Schneider Electric”

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Company Name: Qingdao Bangzheng Electric Group Co., Ltd.

Company Contact: Zhu Lijuan

Company contact person’s mobile number: 19953250558