From transformers and switchgear to ring main units, substations, circuit breakers and smart components, Jubang provides integrated product support for power distribution projects.

Discover Jubang’s strengths in technology R&D, quality testing and smart manufacturing, supporting reliable electrical equipment and efficient power distribution solutions for global customers.

From technical consultation and OEM/ODM customization to EPC support, smart O&M, delivery documentation and after-sales service, Jubang supports your project at every stage.

Our company’s independently developed three point flat medium voltage high-power energy storage converter, switchgear, and step-up transformer have been optimized and integrated. They have the characteristics of higher power per set of equipment, simple application, flexible installation site selection, and convenient operation and maintenance. The system can directly connect 10/35kV high voltage to the power grid, reducing complex high voltage system design work, shortening the system design cycle, and reducing system design costs.
Intelligent and efficient
• Advanced multi-level inverters circuit topology, high conversion efficiency, and better power quality
• Wide DC voltage range, up to 1500V
• Advanced control algorithms with multiple operating modes available, including constant current, constant voltage, and constant power
• Supports long-term overload operation at 110% rated power and short-term overload capacity at 120% rated power
• Intelligent temperature control air cooling, stable operation over a wide temperature range
• Ultra high power density, smaller volume at the same power level
Safe and reliable
• Comprehensive battery protection and maintenance strategies to improve battery life
• Protection against overcurrent, overheating, overload, overvoltage, short circuit, lightning protection and grounding, etc
• Equipped with zero voltage and high voltage ride through functions, with strong adaptability to the power grid
• Equipped with anti islanding protection to ensure safe operation of the power grid
• Adapt to harsh environments of low temperature, high humidity, and high altitude
• The protection level of the inverter is IP55, and the outdoor installation of the entire machine is convenient
Efficient layout
• Integrated design of inverter, switchgear, and transformer, with simple application
• Complete power level, easy for user system configuration
• Local touch screen monitoring, real-time display, and convenient operation
• Standard Ethernet, RS485, CAN communication interface
| DC parameters | ||||
| Maximum DC input power | 2200kW | 2750kW | 3465kW | 3795kW |
| DC input voltage range | 5800-1000V | 730-1200V | 910-1500V | 1000-1500V |
| Maximum DC input current | 1935A*2 | 1935A*2 | 1935A*2 | 1935A*2 |
| Stable voltage accuracy | ±1% | ±1% | ±1% | ±1% |
| Steady current accuracy | ±1% | ±1% | ±1% | ±1% |
| DC current ripple | ≤ 2% | ≤ 2% | ≤ 2% | ≤ 2% |
| Topology structure of inverter | Multi-level inverters | Multi-level inverters | Multi-level inverters | Multi-level inverters |
| Number of DC input channels | 2 | 2 | 2 | 2 |
| Communication side parameters (grid connected operation mode) | ||||
| Rated AC output power | 2000kW | 2500kW | 3125kW | 3450kW |
| Rated AC output current | 2886A | 2886A | 2886A | 2886A |
| Rated AC output voltage | 400V | 500V | 630V | 690V |
| AC output voltage range | 340-400V
(Adjustable) |
425-550V
(Adjustable) |
536-639V
(Adjustable) |
586-759V
(Adjustable) |
| Rated grid frequency | 50Hz | 50Hz | 50Hz | 50Hz |
| Allow frequency
fluctuation range of the power grid |
47-50Hz
(Adjustable) |
47-50Hz
(Adjustable) |
47-50Hz
(Adjustable) |
47-50Hz
(Adjustable) |
| Total harmonic distortion rate of current | < 3%(Rated power) | |||
| Power factor | ≥ 0.99 | |||
| Adjustable range of power factor | 0.9(leading)~0.9(lagging) | |||
| Communication side parameters (island operation mode) | ||||
| Rated voltage | 400V | 500V | 630V | 690V |
| Voltage accuracy | Within ± 3% | Within ± 3% | Within ± 3% | Within ± 3% |
| Rated output power | 50Hz | 50Hz | 50Hz | 50Hz |
| Output voltage distortion (THD) | < 3%(Linear load) | < 3%(Linear load) | < 3%(Linear load) | < 3%(Linear load) |
| Frequency accuracy | ±1Hz | ±1Hz | ±1Hz | ±1Hz |
| Voltage transition range | Within 10%, 0 to 100% load variation | |||