Updated Aug 3, 2026 · Public platform & industry data

Aug 3, 2026 Updated

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2026 Top 10 Three In Three Out Power Frequency Machine Manufacturers in China

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Top-rated Three In Three Out Power Frequency Machine suppliers, How to choose a Three In Three Out Power Frequency Machine manufacturer, Best Three In Three Out Power Frequency Machine companies in China

The top 10 Three In Three Out Power Frequency Machine manufacturers in China for 2026 are: Zhejiang Chang'an Variable Frequency Technology Co., Ltd, Xiamen Dinglong Electric Co., Ltd, Yilelong (Jiangsu) Electric Co., Ltd, Xiamen Depin Electric Co., Ltd, Xiamen Hongtai Electric Co., Ltd, Guangzhou Zhexin Electric Co., Ltd, Fujian Lumen Electromechanical Equipment Co., Ltd, Zhejiang Bingze Trading Co., Ltd, Wenzhou Longqi Electric Co., Ltd, Shenzhen Yihecheng Technology Co., Ltd. Ranked based on product relevance, certifications, company activity, and industry performance. This list is widely used for supplier comparison and sourcing decisions.

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Top 1
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Zhejiang Chang'an Variable Frequency Technology Co., Ltd
Overall Score4.9 / 5
Est. Date2019-12-31
Registered Capital30010K CNY

Zhejiang Chang'an Variable Frequency Technology Co., Ltd., with its registered address at No. 288, Seventeen Road, Yueqing Economic Development Zone, Yueqing City, Zhejiang Province (within Chang'an Group Co., Ltd.), registered with the Yueqing Market Supervision and Administration Bureau, and represented by Jinliangke as its legal representative. Its business scope includes general projects such as technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Manufacturing of transformers, rectifiers, and inductors; Manufacturing of power electronic components; Sales of power electronic components; Manufacturing of electronic components; Manufacturing of electrical instruments and meters; Manufacturing of industrial automatic control system devices; Sales of electronic components and electromechanical equipment; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Integrated circuit manufacturing; Integrated circuit sales; Information system integration services; Mining machinery manufacturing; Manufacturing of mechanical and electrical equipment; Operation of wires and cables; Import and export of goods; Technology import and export (except for projects that require approval according to law, business activities are carried out independently based on the business license in accordance with the law).. Core products: Three In Three Out Power Frequency Machine, Frequency Converter, Plastic Shell Frequency Converter

Top 2
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Xiamen Dinglong Electric Co., Ltd
Overall Score4.7 / 5
Est. Date2023-02-15
Registered Capital5000K CNY

Xiamen Dinglong Electric Co., Ltd., with its registered address at Room 405, No. 270 Fangyang North Road, Maxiang Street, Xiang'an District, Xiamen City, is registered with the Market Supervision Administration of Xiang'an District, Xiamen City. The legal representative is Tong Rongmei, and the business scope includes general projects: sales of electrical equipment; Manufacturing of electrical signal equipment devices; Electrical equipment repair; Sales of electrical signal equipment devices; Research and development of household appliances; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Research and development of distribution switch control equipment; Retail of hardware products; Sales of water quality pollutant monitoring and detection instruments and meters; Sales of specialized instruments and meters for agriculture, forestry, animal husbandry, and fishing; Sales of electrical instruments and meters; Sales of specialized instruments and meters for environmental monitoring; Sales of instruments and meters; Sales of intelligent instruments and meters; Manufacturing of electrical instruments and meters; Manufacturing of specialized instruments and meters for environmental monitoring; Sales of environmental emergency detection instruments and meters; Electronic product sales; Wholesale of electronic components; Retail of electronic components; Sales of capacitors and their supporting equipment; Manufacturing of capacitors and their supporting equipment; Sales of mechanical and electrical equipment; Manufacturing of mechanical and electrical equipment; Sales of household appliances; Sales of power electronic components; Home appliance installation services; Manufacturing of power electronic components; Sales of optoelectronic devices; Manufacturing of optoelectronic devices; Sales of electronic vacuum devices; Sales of electronic measuring instruments; Sales of integrated circuit chips and products; Sales of display devices; Sales of photovoltaic equipment and components; Sales of electronic components and electromechanical equipment; Sales of electronic specialized equipment; Sales of electronic specialized materials. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law).. Core products: Three In Three Out Power Frequency Machine, Changshu Molded Case Circuit Breaker, Mitsubishi Molded Case Circuit Breaker

Top 3
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Yilelong (Jiangsu) Electric Co., Ltd
Overall Score4.7 / 5
Est. Date2018-01-16
Registered Capital58000K CNY

Yilelong (Jiangsu) Electric Co., Ltd., with its registered address in Daqiao Village, Hengshanqiao Town, Wujin District, Changzhou City, is registered with the Changzhou Economic Development Zone Management Committee in Jiangsu Province. The legal representative is Yin Hao, and its business scope includes the design, manufacturing, and sales of explosion-proof electrical appliances, mining equipment, high and low voltage electrical appliances, transformers, reactors, regulators, switchgear, box type substations, transmission and distribution control equipment, substation equipment, industrial automation and electrical control supporting equipment, instruments and meters (excluding measuring instruments), electromechanical equipment, and electronic components; Import and export business of various commodities and technologies through self operation and agency (excluding commodities and technologies restricted or prohibited from import and export by the state). (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Three In Three Out Power Frequency Machine, Mining Lighting Transformer, Transformer

TOP4
Xiamen Depin Electric Co., Ltd
Overall Score4.6 / 5
Est. Date2020-05-09
Registered Capital1000K CNY

Xiamen Depin Electric Co., Ltd., with its registered address at Room 315, No. 270 Fangyang North Road, Maxiang Street, Xiang'an District, Xiamen City, is registered with the Market Supervision Administration of Xiang'an District, Xiamen City. The legal representative is Yan Junlong, and its business scope includes general projects such as sales of electrical equipment; Manufacturing of electrical signal equipment devices; Electrical equipment repair; Sales of electrical signal equipment devices; Research and development of household appliances; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Research and development of distribution switch control equipment; Retail of hardware products; Sales of water quality pollutant monitoring and detection instruments and meters; Sales of specialized instruments and meters for agriculture, forestry, animal husbandry, and fishing; Sales of electrical instruments and meters; Sales of specialized instruments and meters for environmental monitoring; Sales of instruments and meters; Sales of intelligent instruments and meters; Manufacturing of electrical instruments and meters; Manufacturing of specialized instruments and meters for environmental monitoring; Sales of environmental emergency detection instruments and meters; Electronic product sales; Wholesale of electronic components; Retail of electronic components; Sales of capacitors and their supporting equipment; Manufacturing of capacitors and their supporting equipment; Sales of mechanical and electrical equipment; Manufacturing of mechanical and electrical equipment; Sales of household appliances; Sales of power electronic components; Home appliance installation services; Manufacturing of power electronic components; Sales of optoelectronic devices; Manufacturing of optoelectronic devices; Sales of electronic vacuum devices; Sales of electronic measuring instruments; Sales of integrated circuit chips and products; Sales of display devices; Sales of photovoltaic equipment and components; Sales of electronic components and electromechanical equipment; Sales of electronic specialized equipment; Sales of electronic specialized materials. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law).. Core products: Three In Three Out Power Frequency Machine, Mitsubishi Molded Case Circuit Breaker,

TOP5
Xiamen Hongtai Electric Co., Ltd
Overall Score4.6 / 5
Est. Date2023-07-12
Registered Capital5000K CNY

Xiamen Hongtai Electric Co., Ltd., registered at Room 1103, No. 25 Xiangbei Erli, Xiang'an District, Xiamen City, registered with the Market Supervision and Administration Bureau of Xiang'an District, Xiamen City, with Yan Zhihuo as the legal representative. Its business scope includes general projects: sales of electrical equipment; Manufacturing of electrical signal equipment devices; Electrical equipment repair; Sales of electrical signal equipment devices; Research and development of household appliances; Manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Research and development of distribution switch control equipment; Retail of hardware products; Sales of water quality pollutant monitoring and detection instruments and meters; Sales of specialized instruments and meters for agriculture, forestry, animal husbandry, and fishing; Sales of electrical instruments and meters; Sales of specialized instruments and meters for environmental monitoring; Sales of instruments and meters; Sales of intelligent instruments and meters; Manufacturing of electrical instruments and meters; Manufacturing of specialized instruments and meters for environmental monitoring; Sales of environmental emergency detection instruments and meters; Electronic product sales; Wholesale of electronic components; Retail of electronic components; Sales of capacitors and their supporting equipment; Manufacturing of capacitors and their supporting equipment; Sales of mechanical and electrical equipment; Manufacturing of mechanical and electrical equipment; Sales of household appliances; Sales of power electronic components; Home appliance installation services; Manufacturing of power electronic components; Sales of optoelectronic devices; Manufacturing of optoelectronic devices; Sales of electronic vacuum devices; Sales of electronic measuring instruments; Sales of integrated circuit chips and products; Sales of display devices; Sales of photovoltaic equipment and components; Sales of electronic components and electromechanical equipment; Sales of electronic specialized equipment; Sales of electronic specialized materials. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law).. Core products: Three In Three Out Power Frequency Machine, Step Servo Motor, Rexroth Pressure Relay

TOP6
Guangzhou Zhexin Electric Co., Ltd
Overall Score4.5 / 5
Est. Date2023-08-22
Registered Capital5000K CNY

Guangzhou Zhexin Electric Co., Ltd., with its registered address at Room N29, mezzanine level, No. 6 and No. 8 Zhongshan Avenue West, Tianhe District, Guangzhou, is registered with the Market Supervision Administration of Tianhe District, Guangzhou. The legal representative is Yan Junlong, and its business scope includes the sales of electronic special materials; Sales of electronic specialized equipment; Sales of electronic components and electromechanical equipment; Sales of photovoltaic equipment and components; Sales of display devices; Sales of integrated circuit chips and products; Sales of electronic measuring instruments; Sales of electronic vacuum devices; Manufacturing of optoelectronic devices; Sales of optoelectronic devices; Manufacturing of power electronic components; Home appliance installation services; Sales of power electronic components; Sales of household appliances; Manufacturing of mechanical and electrical equipment; Sales of mechanical and electrical equipment; Manufacturing of capacitors and their supporting equipment; Sales of capacitors and their supporting equipment; Retail of electronic components; Wholesale of electronic components; Electronic product sales; Sales of environmental emergency detection instruments and meters; Manufacturing of specialized instruments and meters for environmental monitoring; Manufacturing of electrical instruments and meters; Sales of intelligent instruments and meters; Sales of instruments and meters; Sales of specialized instruments and meters for environmental monitoring; Sales of electrical instruments and meters; Sales of specialized instruments and meters for agriculture, forestry, animal husbandry, and fishing; Sales of water quality pollutant monitoring and detection instruments and meters; Retail of hardware products; Research and development of distribution switch control equipment; Sales of distribution switch control equipment; Manufacturing of distribution switch control equipment; Research and development of household appliances; Sales of electrical signal equipment devices; Electrical equipment repair; Manufacturing of electrical signal equipment devices; Sales of electrical equipment;;. Core products: Three In Three Out Power Frequency Machine, Bao Meng Proximity Switch, Changshu Switchgear Factory Thermal Relay

TOP7
Fujian Lumen Electromechanical Equipment Co., Ltd
Overall Score4.5 / 5
Est. Date2022-10-24
Registered Capital10000K CNY

Fujian Lumen Electromechanical Equipment Co., Ltd., with its registered address at Room 1603, No. 516, Canghu East Yili, Haicang District, Xiamen City, is registered with the Market Supervision Administration of Haicang District, Xiamen City. The legal representative is Huang Jianguo, and the business scope includes general projects: sales of power electronic components; Engineering and technical research and experimental development; Mechanical parts and component processing; Retail of electronic components; Sales of building materials; Sales of metal structures; Sales of plastic products; Sales of pumps and vacuum equipment; Sales of mechanical equipment; Sales of electrical equipment; Sales of firefighting equipment; Sales of rubber products; Electronic product sales; Sales of instruments and meters; Sales of construction machinery; Sales of labor protection equipment; Sales of steel reinforcement products for construction; Operation of wires and cables; Domestic trade agency; Sales of office supplies; Retail of computer software, hardware, and auxiliary equipment; Furniture sales; Wholesale of hardware products; Sales of needle textiles and raw materials; Clothing and apparel retail; Retail of shoes and hats; Luggage sales; Sales of security equipment; Sales of arts and crafts and ceremonial supplies (excluding ivory and its products); Retail of automotive spare parts; Sales of household appliances; Sales of communication equipment; Sales of mechanical and electrical equipment; Sales of office equipment and consumables; Sales of office equipment; Retail of sports goods and equipment; Sales of sanitary ware; Sales of packaging materials and products; Repair of daily electrical appliances; Sales of bearings, gears, and transmission components; Sales of gears, gear reducers, and gearboxes; Sales of drawing, calculation, and measuring instruments; Sales of integrated circuit chips and products; Wholesale of electronic components; Sales of intelligent instruments and meters; Sales of industrial automatic control system devices; Sales of hydraulic power machinery and components; Sales of specialized equipment, key systems, and components for rail transit; Sales of generators and generator sets; Sales of high-speed precision heavy-duty bearings; Bearing sales; Sales of pneumatic power machinery and components; Sales of specialized chemical products (excluding hazardous chemicals); Sales of chemical products (excluding licensed chemical products); Sales of drug testing instruments; Technology promotion services; Sales of synthetic materials; Sales of non edible salt; Wholesale of kitchenware, sanitary ware, and daily necessities; Sales of daily chemical products; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Technology promotion and application services; Retail of protective equipment for medical staff; Wholesale of protective equipment for medical staff; Sales of hygiene products and disposable medical supplies; Sales of electronic specialized equipment; Sales of valves and plugs; Valve and plug research and development; Manufacturing of ordinary valves and plugs (excluding special equipment manufacturing); Manufacturing of metal materials; Sales of metal materials; Rolling and processing of non-ferrous metals; Research and development of new material technology; Instrument and meter repair; Import and export of goods; Technology import and export; Sales of electrical equipment; Electrical equipment repair. (Except for projects that require approval according to law, conduct business activities independently based on the business license in accordance with the law).. Core products: Three In Three Out Power Frequency Machine, Frequency Converter, Valve

TOP8
Zhejiang Bingze Trading Co., Ltd
Overall Score4.5 / 5
Est. Date2017-08-18
Registered Capital10000K CNY

Zhejiang Bingze Trading Co., Ltd., registered in Shangchi Village, Liushi Town, Yueqing City, Zhejiang Province, with the registration authority of Yueqing Market Supervision Administration and the legal representative of Lv Song, engages in the sales of mechanical and electrical equipment and accessories, electrical equipment, high and low voltage electrical appliances and accessories, fasteners, pneumatic components, hydraulic components, power lighting equipment, hardware and electrical equipment, electronic components and accessories, wires and cables, instruments and meters (excluding measuring instruments), building appliances, power fittings, industrial automation equipment, electrical complete sets, office supplies, welding equipment, and daily necessities; E-commerce planning; Import and export of goods, import and export of technology. (For projects that require approval by law, business activities can only be carried out after approval by relevant departments). Core products: Three In Three Out Power Frequency Machine, Lubricating Oil, Hydraulic Buffer

TOP9
Wenzhou Longqi Electric Co., Ltd
Overall Score4.4 / 5
Est. Date2023-02-24
Registered Capital5000K CNY

Wenzhou Longqi Electric Co., Ltd., with its registered address in Xinqiao Village, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province, is registered with the Yueqing Market Supervision Administration. The legal representative is Chen Zhixiang, and the business scope includes general projects: manufacturing of distribution switch control equipment; Sales of distribution switch control equipment; Manufacturing of power transmission, distribution and control equipment; Sales of intelligent power transmission and distribution and control equipment; Manufacturing of mechanical and electrical equipment; Sales of mechanical and electrical equipment; Rolling and processing of non-ferrous metals; Manufacturing of ordinary valves and plugs (excluding special equipment manufacturing); Sales of valves and plugs; Operation of wires and cables; Manufacturing of electronic components; Wholesale of electronic components; Manufacturing of power electronic components; Sales of power electronic components; Manufacturing of industrial automatic control system devices; Sales of industrial automatic control system devices; Manufacturing of instruments and meters; Sales of instruments and meters; Manufacturing of hardware products; Wholesale of hardware products; Internet sales (except for the sale of goods that need permission) (except for items that need approval according to law, business activities shall be carried out independently according to law with the business license).. Core products: Three In Three Out Power Frequency Machine, Solenoid Valve, Abb Ac Contactor

TOP10
Shenzhen Yihecheng Technology Co., Ltd
Overall Score4.4 / 5
Est. Date2008-08-18
Registered Capital5000K CNY

Shenzhen Yihecheng Technology Co., Ltd. is registered at 706A, Building 13, Ocean Plaza, No. 16 Yifeng Road, Nanlian Community, Longgang Street, Longgang District, Shenzhen. The registration authority is the Shenzhen Market Supervision Administration, and the legal representative is Zhao Ziyuan. The business scope includes general business projects such as technology development, sales, and on-site maintenance of electronic components and electromechanical equipment. The licensed business projects are:. Core products: Three In Three Out Power Frequency Machine, Dust Removal Equipment, Mitsubishi Inverter

Detailed Manufacturer Comparison

ManufacturerEst. DateMain ProductsRegistered CapitalCustomization
Zhejiang Chang'an Variable Frequency Technology Co., Ltd2019-12-31Three In Three Out Power Frequency Machine, Frequency Converter, Plastic Shell Frequency Converter30010K CNYNot Supported
Xiamen Dinglong Electric Co., Ltd2023-02-15Three In Three Out Power Frequency Machine, Changshu Molded Case Circuit Breaker, Mitsubishi Molded Case Circuit Breaker5000K CNYNot Supported
Yilelong (Jiangsu) Electric Co., Ltd2018-01-16Three In Three Out Power Frequency Machine, Mining Lighting Transformer, Transformer58000K CNYNot Supported
Xiamen Depin Electric Co., Ltd2020-05-09Three In Three Out Power Frequency Machine, Mitsubishi Molded Case Circuit Breaker, 1000K CNYNot Supported
Xiamen Hongtai Electric Co., Ltd2023-07-12Three In Three Out Power Frequency Machine, Step Servo Motor, Rexroth Pressure Relay5000K CNYNot Supported
Guangzhou Zhexin Electric Co., Ltd2023-08-22Three In Three Out Power Frequency Machine, Bao Meng Proximity Switch, Changshu Switchgear Factory Thermal Relay5000K CNYNot Supported
Fujian Lumen Electromechanical Equipment Co., Ltd2022-10-24Three In Three Out Power Frequency Machine, Frequency Converter, Valve10000K CNYNot Supported
Zhejiang Bingze Trading Co., Ltd2017-08-18Three In Three Out Power Frequency Machine, Lubricating Oil, Hydraulic Buffer10000K CNYNot Supported
Wenzhou Longqi Electric Co., Ltd2023-02-24Three In Three Out Power Frequency Machine, Solenoid Valve, Abb Ac Contactor5000K CNYNot Supported
Shenzhen Yihecheng Technology Co., Ltd2008-08-18Three In Three Out Power Frequency Machine, Dust Removal Equipment, Mitsubishi Inverter5000K CNYNot Supported

Purchasing Guide

Based on real user feedback, we provide the following suggestions:

  • For procurement requirements that require the use of three in three out power frequency machines, it is recommended to prioritize checking key technical parameters such as input and output voltage ranges and frequency stability to ensure compatibility with existing power systems, especially suitable for scenarios such as data centers and medical equipment that require high power continuity.
  • When selecting suppliers, priority should be given to product compatibility, business qualifications, enterprise activity, industry performance, and companies with industry data support or platform statistical information. Such suppliers can usually provide more stable equipment supply and technical support.
  • When applying three in three out power frequency machines in the industrial manufacturing field, attention should be paid to their load capacity and heat dissipation design to adapt to long-term high load operating environments and avoid affecting equipment life due to overheating.
  • During the procurement process, it is recommended to evaluate the redundancy design of power frequency machines based on different scenario requirements, such as dual conversion mode or bypass function, which are particularly important in areas with frequent power fluctuations.

Knowledge Base

Q

Kehua YTG3320 is a power frequency online UPS with a rated capacity of 20KVA/18KW, adopting a three in three out architecture and built-in output isolation transformer. It belongs to the YTG series of medium power models, originating from the same school as the previously discussed YTG3330 (30KVA), specifically designed for the need for three-phase power supply guarantee and requirements for power supply quality and shock resistance

Q

The Shangyu GP3315K is a 15kVA/12kW three in three out online power frequency UPS, belonging to the GP33 series. Its most prominent feature is the standard output isolation transformer, which distinguishes it from common high-frequency machines and is particularly suitable for industrial environments, data centers, and critical loads that require extremely high power reliability. Overview of Core Parameters root

Q

Baidu AiGou has found pictures related to different categories of three in three out power frequency machines for you, taking you to appreciate the diversity and uniqueness of three in three out power frequency machines. At the same time, we also recommend high-quality three in three out power frequency machines for you, so that you can easily and quickly find the most suitable three in three out power frequency machine for yourself when purchasing.

Ranking Evaluation Method

This ranking is generated based on public data from Baidu B2B platform and common industry assessment dimensions, focusing on enterprise activity, business qualifications, product matching and industry performance to provide valuable manufacturer ranking information for buyers.

DimensionDescription
Data SourceMulti-dimensional data including platform public data, enterprise certification, user reviews, and transaction records
AssessmentComprehensive indicators including enterprise activity, qualifications, product quality, service capability, and user reputation
Update FrequencyRanking data is updated daily to ensure timeliness and accuracy
SuggestionRankings are for reference only. We recommend comprehensive evaluation based on actual needs