Custom Engineered, Standard-Compliant Medium Voltage Packaging and Smart Energy Distribution Systems
Explore our high-performance combined substations, containerized units, and outdoor distribution kiosks configured for utility, renewable, and heavy-duty industrial applications.
In today's rapidly changing energy landscape, efficiency, speed, and safety are the primary drivers of electrical grid evolution. Traditional brick-and-mortar substations require extensive civil engineering, prolonged site integration, and pose significant environmental risks. Prefabricated compact substations—also known as package substations or outdoor box-type substations—represent a technological leap forward. By housing medium-voltage switchgear, distribution transformers, and low-voltage switchboards inside a single, weather-resistant, factory-tested enclosure, they streamline deployment and minimize footprints.
Global industrial upgrades, grid modernization efforts, and the exponential growth of renewable energy systems (such as photovoltaic power plants and wind farms) have driven the demand for highly reliable, localized compact substations. Zhejiang Zeno Electric Co., Ltd. leads this market, providing certified designs that withstand severe outdoor conditions while maintaining maximum grid reliability and personal safety.
A National High-Tech Power Infrastructure Pioneer
Zhejiang Zeno Electric Co., Ltd. is a national high-tech enterprise located in Ningbo, with a registered capital of 52 million yuan.
The company integrates the research and development (R&D), manufacturing, sales, and service of advanced power equipment and integrated energy systems. Rooted in Ningbo and supported by a strong engineering and technical team, Zeno Electric has steadily expanded its business across China and international markets.
Through continuous innovation and quality-driven development, the company has become a trusted provider in the power and energy industry, with growing influence in both utility and industrial sectors. With a focus on sustainable development and smart energy transformation, we are committed to delivering safe, efficient, and intelligent power solutions that support the global transition toward cleaner and more digitalized energy systems.
To construct the ultimate modular energy solution utilizing rigorous materials selection, precise fabrication, and advanced testing technologies.
End-to-End Advanced Power Equipment and Energy System Solutions
Zhejiang Zeno Electric Co., Ltd. specializes in power equipment and integrated energy system solutions. Our product portfolio spans the entire power distribution chain, addressing low, medium, and high voltage environments.
High and low voltage complete power distribution equipment, including customized switchgear, distribution boards, and reactive power compensation modules.
Outdoor integrated energy storage systems designed to balance loads, store renewable energy, and supply reliable peak shaving solutions.
Specifically engineered step-up prefabricated substations designed for the harsh environments of large-scale photovoltaic and wind parks.
Gas insulated (SF6) or eco-friendly solid insulated ring main units, offering compact protection and control for ring configuration systems.
High-power rapid charger integrations paired with local distribution equipment, allowing scalable public transportation grid hookups.
Digital cloud-linked management architectures that track thermal signatures, load imbalances, and switchgear states in real-time.
In addition to standardized manufacturing, Zeno Electric undertakes turnkey power engineering projects up to 220kV. We supply end-to-end services, spanning initial system planning, detailed engineering design, structural calculations, component assembly, quality-controlled testing, on-site commissioning, and lifecycle maintenance.
We build fully customized, one-to-one energy solutions matching specialized structural or ambient demands. Our single-source model supports global buyers in:
Engineered to excel under strict international electrical criteria
To assist procurement managers, electrical design offices, and engineering, procurement, and construction (EPC) contractors in specifying the correct compact substation, Zeno Electric provides standardized yet customizable configurations. Our solutions support both European (European Style Compact Substation, enclosing separate compartments for HV, Transformer, and LV) and American styles (dead-front/loop-feed configurations).
| Technical Parameter | Standard Reference Value | Customizable Range / Application |
|---|---|---|
| Rated Voltage (HV Side) | 10 kV / 11 kV / 12 kV / 22 kV / 33 kV / 35 kV | Up to 40.5 kV (Special High-Altitude Configurations) |
| Rated Voltage (LV Side) | 0.4 kV / 380 V / 400 V / 690 V | Tailored based on regional load grids and motor controls |
| Rated Capacity | 630 kVA / 800 kVA / 1000 kVA / 1250 kVA / 2500 kVA | From 30 kVA up to 5000 kVA configurations (Step-Up/Step-Down) |
| Frequency Compatibility | 50 Hz / 60 Hz | Suited for European, Asian, and Americas grids |
| Enclosure Protection Class | IP43 (Standard Openings) / IP54 / IP55 | Weatherproof, windproof, dustproof configurations |
| Transformer Fluid | Mineral Oil (S11 / S13 Series) / Dry-Type Cast Resin | Eco-safe synthetic ester fluids available upon request |
| Switchgear Isolation | Air-Insulated Switchgear (AIS) / SF6 Gas Insulated (GIS) | Alternative eco-friendly gas configurations |
| Cladding Options | Stainless steel, Aluzinc alloy plate, GRP cladding, Concrete | Anti-corrosive marine marine grade standard painting |
Tailoring modular distribution systems for real-world environmental challenges
Underground mines and industrial smelting yards present significant dust, high vibrations, and thermal stresses. Our containerized mining-spec substations are engineered using structural steel frames, fortified structural welds, and double-sealed ventilation flaps to keep conductive coal or iron dust from entering sensitive HV switchgear chambers.
Large-scale photovoltaic farms require step-up distribution units to convert inverter outputs (commonly 380V–690V) to utility grid entry voltages (e.g., 35kV). Zeno Electric's prefabricated step-up substations are pre-engineered with intelligent monitoring interfaces, minimizing transformer losses during high-ambient PV peak generation hours.
High-density urban retrofits and fast-charging depots for bus or EV fleets demand compact space envelopes. Our package substations integrate dry-type transformers and smart ring main units (RMU) to offer silent, safe operation close to pedestrian-accessible locations, while incorporating safety fire-barriers.
State-of-the-art precision tools ensuring outstanding electrical reliability
From precision metal plate cutting to high-vacuum oil filling and comprehensive dielectric tests, our manufacturing processes are executed under ISO 9001, ISO 14001, and ISO 45001 management criteria. Below is our key component assembly workflow.
Securing reliable grid interconnection across regional power infrastructures
Exporting electrical infrastructure globally demands comprehensive knowledge of regional norms, wiring styles, and connection rules. Zhejiang Zeno Electric Co., Ltd. ensures all compact substations are designed and verified against standard requirements:
Our factory in Ningbo is situated close to one of the world's largest deepwater shipping ports, Ningbo-Zhoushan Port. This proximity enables fast, cost-effective container and heavy-cargo transportation.
Additionally, we supply custom-configured localization parameters, including special transformer vector groups (e.g., Dyn11, Yyn0), custom metering chambers, and specialized cable entry/exit channels (bottom entry, top entry) designed to match on-site cable trenches.
Technical clarifications for engineers and procurement professionals
Flexible ratings and setups designed to integrate with global distribution networks
Zeno Electric
