A selection of our primary complete sets, BESS utility cabins, and medium-voltage air-insulated switchgear units.
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 research and development (R&D), manufacturing, sales, and service of advanced power equipment and 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.
A deep dive into the engineering solutions, customized modules, and smart infrastructure we deliver globally.
Zhejiang Zeno Electric Co., Ltd. specializes in power equipment and integrated energy system solutions. Our product portfolio covers a wide range of advanced technologies, including high and low voltage complete power distribution equipment, outdoor integrated energy storage systems, prefabricated substations for wind and solar power generation, ring main units (RMU), smart EV charging infrastructure, and digital intelligent energy management systems.
We design and execute comprehensive EPC utility and distribution projects up to 220kV, spanning engineering design, custom cabinet fabrication, installation, testing, and lifetime service.
Dedicated 1-to-1 engineering consultations ensure optimized footprints, custom thermal management protocols (liquid vs air), and seamless integration with legacy SCADA platforms.
Our integrated systems streamline grid interconnectivity approvals, significantly reduce operational expenditure (OPEX), and prevent power outages with predictive edge intelligence.
The worldwide energy grid is going through a massive transformation, moving from a centralized architecture to a highly decentralized, multi-directional grid. This change is driven by the rapid adoption of renewable energy sources, the push for electrification in transport and heavy industries, and the critical need to improve grid resilience. In this new era, Power System Automation serves as the technological foundation that ensures stability, efficiency, and safety.
One of the major developments in this shift is the widespread adoption of the IEC 61850 protocol. This standard enables seamless, high-speed communication between Intelligent Electronic Devices (IEDs), Remote Terminal Units (RTUs), and Programmable Logic Controllers (PLCs) across substations. This interoperability allows utilities to replace traditional copper hardwiring with optical fiber-based Ethernet networks. As a result, switchgear can now execute complex logic schemes, like high-speed bus transfer and automated loop restoration, in just milliseconds.
As utilities integrate larger shares of solar PV and wind energy, grids must manage rapid power fluctuations. Modern automation solves this by pairing Grid-Tied Battery Energy Storage Systems (BESS) with automated power management controllers. These systems monitor load demands and battery state-of-charge (SoC) in real time to stabilize grid voltage and frequency instantly.
Smart switchgear designs now feature integrated temperature, gas density, and vibration sensors. These sensors continuous stream data to cloud-based predictive maintenance systems, allowing operators to detect issues like SF6 gas leaks, localized overheating, or mechanical wear before they lead to costly equipment failures.
Procurement teams, EPC contractors, and utility operators face complex technical and operational challenges when selecting power equipment manufacturers. Achieving a balance between cost, performance, and compliance requires a deep understanding of core engineering standards and operating conditions.
| Procurement Criteria | Key Challenges | Technical Solutions & Metrics |
|---|---|---|
| Interoperability | Incompatibility between legacy hardware and modern SCADA architectures. | Compliance with IEC 61850 Edition 2, DNP3, Modbus TCP/IP, and Profinet. |
| Environmental Resilience | Equipment degradation in harsh conditions (high humidity, salt fog, dust). | C5-M high-durability paint coatings, IP54/IP65 ratings, and climate-controlled enclosures. |
| Safety & Interlocks | Arc flash hazards and operational errors during maintenance. | 5-prevent mechanical interlocks, internal arc classifications (IAC AFLR), and pressure relief venting. |
| Harmonic Control | Voltage distortion caused by large solar inverters. | Active Power Filters (APFs), static var generators (SVGs), and low-impedance isolation transformers. |
To address these challenges, Zhejiang Zeno Electric designs customized solutions that integrate testing and validation into every step of production. Our custom engineering team matches every piece of switchgear, control cabinet, and containerized substation to the exact technical requirements of the destination grid.
For large-scale utility and industrial installations, individual components are only as good as the system they belong to. Zeno Electric specializes in macro-level power infrastructure solutions that balance distribution efficiency, reliability, and security.
Our large-scale grid-tied BESS containers—ranging from 50kWh to 100MWh capacities—are engineered for peak shaving, frequency regulation, and solar-wind smoothing. Using high-density Lithium Iron Phosphate (LiFePO4) chemistry, these systems feature advanced liquid-cooling thermal management to maintain optimal cell temperatures within ±2°C. Integrated fire protection schemes compliant with NFPA 855 standards, alongside multi-tier Battery Management Systems (BMS), ensure safe and reliable utility-grade storage operations.
Designed for urban, wind farm, and solar park distribution networks, our prefabricated compact substations (available up to 33kV and 5000kVA configurations) combine medium-voltage switchgear, power transformers, and low-voltage distribution panels in a single, transportable enclosure. These substations arrive at the site fully wired, assembled, and tested, reducing civil engineering costs and commissioning times by up to 60%.
From metal-clad air-insulated switchgear (AIS) like the KYN28 and KYN61 series to compact Gas Insulated Switchgear (GIS) utilizing SF6 insulation, we provide robust medium-voltage solutions designed to handle rated currents up to 3150A and short-circuit breaking capacities up to 40kA. These switchgear solutions feature standard IEC-compliant internal arc classifications, ensuring maximum operator safety and system reliability under heavy fault conditions.
Behind our high-performance power equipment is a state-of-the-art facility utilizing automated cutting, welding, casting, and quality testing systems.
To maintain our competitive advantage as a premier global power system automation exporter, Zhejiang Zeno Electric is focusing on key areas within our technical roadmap. This ensures that the equipment we design today is ready for the grid of tomorrow.
Future distribution equipment must communicate with cloud-based VPP coordinators. We are upgrading our control interfaces to support MQTT and HTTPS protocols, allowing localized energy storage systems and EV charging hubs to act as aggregate dispatchable resources.
As part of our commitment to global sustainability and environmental compliance, Zeno Electric is developing eco-insulated switchgear that uses dry air or fluoronitrile gas mixtures instead of SF6. This helps reduce greenhouse gas emissions while maintaining high dielectric performance.
By integrating silicon carbide (SiC) switches directly into our compact distribution equipment, we aim to improve operational response speeds and system efficiency. This allows for cleaner, more reliable power flows in high-demand industrial and solar settings.
Operating in diverse international markets requires strict adherence to regional safety and regulatory standards. Zeno Electric ensures that all products—from compact distribution boxes to heavy high-voltage switchgear—meet the required international compliance certifications.
Zeno Electric provides complete Factory Acceptance Testing (FAT) at our facility, accompanied by detailed calibration reports, dielectric test results, and mechanical lifetime reports. We also offer Site Acceptance Testing (SAT) support, virtual installation commissioning assistance, and partnerships with local electrical engineering teams globally. This ensures rapid system commissioning and reliable, long-term operation.
Our PLC control cabinets are built using open communication standards. We support native protocol configurations including IEC 61850, Modbus TCP, DNP3, and Profinet. During the pre-engineering design stage, our team maps out target registers and data nodes to ensure plug-and-play compatibility with your central control room SCADA platform.
Our BESS units use a multi-tier safety system. First, cell-level smart BMS monitors monitor voltage, temperature, and internal resistance. Second, an active liquid-cooling system maintains consistent temperatures across the pack. Finally, the systems are protected by integrated gas detection and aerosol-based fire suppression systems, fully compliant with NFPA 855 codes.
Air Insulated Switchgear (like the KYN28 series) relies on ambient atmospheric air for electrical insulation, requiring a larger physical footprint but offering easier access for visual checks and maintenance. Gas Insulated Switchgear (like our ZF-252 series) uses pressurized sulfur hexafluoride (SF6) gas for insulation, allowing for a much more compact design that is completely sealed from environmental dust, moisture, and corrosion.
Yes. Our prefabricated box substations can be customized for harsh environments. They feature C5-M marine-grade anti-corrosive coatings, stainless steel or marine alloy enclosures, high-ingress IP54/IP65 ratings, and HVAC thermal systems to ensure reliable operation in temperatures from -40°C to +55°C.
Every switchgear unit undergoes a comprehensive range of factory tests. These include mechanical operation tests, main circuit resistance tests, power frequency voltage withstand tests, auxiliary circuit insulation checks, and gas leakage validation (for GIS). All tests are documented and provided in a detailed inspection package before shipping.
Additional heavy-duty circuit protection units, gas-insulated systems, and customized distribution substations.
Zeno Electric