Green empowerment, sharing a better life
——Juhonkia Electric
Environmentally friendly and
efficient, intelligent monitoring
——Inflatable cabinet, a smart choice for future power grids
——Small stature, great wisdom
Ring main unit
Bringing agility and intelligence to
urban power grids
——Intelligent integration, security upgrade
Pole mounted circuit breaker
Quality control for a safe and secure future
One-stop power solution
From high voltage to low voltage, making energy management easier
Our Advantage
Zhejiang Juhonkia Intelligent Electric Co.,Ltd
Has a CNAS accredited laboratory
Has a CNAS accredited laboratory
It has a CNAS accredited laboratory, a smart quality control brain, and a shared laboratory...
R&D institutions and corporate research institutes
R&D institutions and corporate research institutes
It has multiple specialized R&D institutions and corporate research institutes, and its products have independent...
Multiple product categories, complete specifications, and intelligent equipment
Multiple product categories, complete specifications, and intelligent equipment
Leading the domestic leading level, digital workshops, intelligent factories...
There is always a ring main unit suitable for you,
and we can provide customized services according to your special requirements.
It has a CNAS accredited laboratory, a smart quality control brain, and a shared laboratory...
OEM/ODM
Hot Products

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Our Products

JSR6-12/24 SF6 gas-insulated metal-enclosed ring main unit
JSR6-40.5 SF6 gas-insulated metal-enclosed ring main unit
GSR6-27.5 SF6 free gas-insulated metal-enclosed switchgear (C-GIS)
GSR6-12 SF6 free gas-insulated metal-enclosed switchgear (C-GIS)
Our Products
Applications

03

Case presentation

Hangzhou Metro
Wind power
PV
Airport
Three Gorges of the Yangtze River
News Center

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News information

2026/10/08 00:07:07

What Do Transformer Vector Group and Impedance Mean for Project Selection?
What Do Transformer Vector Group and Impedance Mean for Project Selection? In simple terms, the vector group defines how a transformer’s primary and secondary windings are connected and how their voltages are phase-shifted, while impedance indicates the transformer’s internal opposition to current flow during normal and fault conditions. Together, these two specifications help engineers
How Pole-Mounted Circuit Breakers Improve Distribution Grid Reliability

2026/10/07 00:06:14

How Pole-Mounted Circuit Breakers Improve Distribution Grid Reliability
Utilities use a pole-mounted circuit breaker for distribution lines—often called an automatic recloser—to detect faults, interrupt current, and restore service without sending a crew to every temporary fault. A correctly engineered automatic recloser installation can improve medium-voltage overhead feeder protection through distribution automation, fault isolation, and outage restoration. The
GGD vs GCS vs MNS Low Voltage Switchgear: What Are the Differences?

2026/10/06 00:05:34

GGD vs GCS vs MNS Low Voltage Switchgear: What Are the Differences?
For a Low Voltage Switchgear Manufacturer, the most important question is not which model is most popular, but which structure provides the right balance of safety, capacity, maintainability, installation cost, and long term reliability for a specific project. GGD, GCS, and MNS low voltage switchgear are all widely used in power distribution systems, but they are not interchangeable.

2026/10/06 00:05:37

How Renewable Energy Projects Are Changing Power Transmission and Distribution Systems
Renewable energy projects are transforming Power Transmission and Distribution from a one-way delivery network into a flexible, digital, and bidirectional system. Solar farms, wind plants, battery storage, distributed generation, electric vehicles, and smart loads are changing where electricity is produced, how it flows, and how utilities maintain reliability.
How to Choose a Prefabricated Substation for Industrial and Utility Projects

2026/10/05 00:06:01

How to Choose a Prefabricated Substation for Industrial and Utility Projects
Choosing the right prefabricated substation starts with three questions: what voltage and load must it carry, what fault level must it withstand, and which manufacturer can prove compliance through testing and inspection? For anyone comparing a prefabricated substation for industrial projects, a containerized substation for utilities, or a prefabricated substation manufacturer, the practical

2026/10/05 00:06:05

What Equipment Is Required for Medium-Voltage Power Distribution Systems?
Medium-voltage power distribution systems move electricity from a utility substation to factories, hospitals, data centers, commercial buildings, and large infrastructure sites. The correct equipment must control voltage, interrupt faults, protect workers, and keep essential loads online. A complete design for medium-voltage power distribution equipment normally includes switchgear, transformers,

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