Voltertech Co.,Limited
| Payment Terms | L/C,T/T,Western Union |
| DC Integration Window | 1000–1500V |
| Reactive Power Control | Power Factor -1 to +1 Adjustable |
| Isolation Strategy | Transformer-Isolated AC Interface |
| Dispatch Connectivity | Modbus RTU / Modbus TCP / IEC 60870-5-104 |
| Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production |
| Battery-Side Interface | CAN / RS485 |
| Power Conversion Duty | 1250kW DC / 1250kVA AC |
| Supply Ability | 5000 Units per Month |
| Grid Connection Level | 10kV Medium-Voltage AC |
| Best-Fit Architecture | MW-Scale PV + BESS + Medium-Voltage Grid |
| Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Model Number | BESS-125MW-W-2 |
| Certification | IEC62477-1 , IEC61000-6/2/4 , UN3536 |
| Place of Origin | China |
| Brand Name | Voltertech |
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Product Specification
| Payment Terms | L/C,T/T,Western Union | DC Integration Window | 1000–1500V |
| Reactive Power Control | Power Factor -1 to +1 Adjustable | Isolation Strategy | Transformer-Isolated AC Interface |
| Dispatch Connectivity | Modbus RTU / Modbus TCP / IEC 60870-5-104 | Delivery Time | 10-15 Days for Samples; 30-40 Days for Bulk Production |
| Battery-Side Interface | CAN / RS485 | Power Conversion Duty | 1250kW DC / 1250kVA AC |
| Supply Ability | 5000 Units per Month | Grid Connection Level | 10kV Medium-Voltage AC |
| Best-Fit Architecture | MW-Scale PV + BESS + Medium-Voltage Grid | Packaging Details | Heavy-Duty Wooden Case with Protective Foam |
| Model Number | BESS-125MW-W-2 | Certification | IEC62477-1 , IEC61000-6/2/4 , UN3536 |
| Place of Origin | China | Brand Name | Voltertech |
| High Light | 1.25MW Hybrid Solar Energy System ，10kV Medium-Voltage Power Conversion Container ，Transformer-Isolated BESS Conversion Unit | ||
1.25MW 10kV Hybrid Solar Energy System Conversion Container
The Voltertech BESS-125MW-W is a 1.25MW transformer-isolated conversion unit designed for MW-scale hybrid solar and battery energy storage projects. It connects a 1000–1500V DC-side energy storage system to a 10kV medium-voltage AC network, providing the power conversion and grid interface required for large solar-plus-storage applications.
In a MW-scale hybrid solar project, the battery system and photovoltaic plant often operate at different electrical levels from the medium-voltage grid. The BESS-125MW-W provides the conversion interface between a compatible high-voltage DC battery system and a 10kV AC network.
This architecture is suitable for projects where solar generation, battery storage and grid connection need to be coordinated through a central energy management or dispatch platform.
| Model | BESS-125MW-W |
|---|---|
| DC Voltage Range | 1000–1500V |
| DC Rated Output Power | 1250kW |
| Maximum DC Current | 1309A |
| AC Rated Output Power | 1250kVA |
| Rated AC Voltage | 10kV |
| Rated AC Current | 72.5A |
| Isolation Mode | Transformer Isolation |
| Total Harmonic Distortion | ≤3% at Rated Power |
| Power Factor | -1 to +1 Adjustable |
| Cooling Mode | Air Cooling |
| Operating Temperature | -25°C to +50°C |
| Storage Temperature | -25°C to +55°C |
| Operating Humidity | 0%–95% |
| Working Altitude | ≤2000m |
| Battery Communication | CAN / RS485 |
| Dispatch Communication | Modbus RTU / Modbus TCP / IEC 60870-5-104 |
| Dimensions | 5523 × 2400 × 2800mm |
| Net Weight | Approx. 6T |
The DC side operates within a 1000–1500V range with 1250kW rated power. On the AC side, the system provides 1250kVA rated output at 10kV.
This makes the unit suitable for hybrid solar and BESS projects that require a medium-voltage connection rather than a low-voltage AC output.
Transformer isolation is built into the system architecture, allowing the conversion unit to provide an isolated interface between the battery-side DC system and the 10kV AC network.
For EPC contractors and system integrators, this can simplify the electrical architecture of projects requiring medium-voltage connection while keeping the energy conversion equipment in a containerized format.
Large hybrid solar projects normally require coordination between battery storage, solar generation and grid operation. The BESS-125MW-W provides separate communication interfaces for battery-side equipment and project-level dispatch systems.
Final EMS, SCADA and dispatch compatibility should be confirmed according to the project's communication architecture.
No. The model name is BESS-125MW-W, but the specified rated DC output power is 1250kW, equal to 1.25MW. The AC side is rated at 1250kVA.
It provides the power conversion and medium-voltage AC interface between a compatible high-voltage DC battery system and a 10kV electrical network. It can therefore form part of a larger PV + BESS hybrid system.
The technical specification defines this product by power conversion, DC voltage and AC grid parameters rather than battery energy capacity. The required battery kWh or MWh capacity should be selected separately according to project power and discharge-duration requirements.
The unit is specified for a 1000–1500V DC-side connection and a rated 10kV AC output with transformer isolation. Final electrical and protection design should be confirmed for the specific project.
The unit supports Modbus RTU, Modbus TCP and IEC 60870-5-104 for dispatch communication, together with CAN and RS485 for battery-side communication. Platform compatibility should be confirmed during project engineering.
Provide the PV capacity, required battery power and energy capacity, battery DC voltage range, target discharge duration, grid voltage, communication protocol, project location and site conditions.
Voltertech supports EPC contractors, solar developers and system integrators with MW-scale energy conversion and battery storage solutions.
Send us your PV capacity, BESS power and energy requirements, DC voltage, grid voltage and communication requirements so our team can evaluate the project configuration.
Company Details
Business Type:
Manufacturer
Year Established:
15 Years
Total Annual:
5000000-10000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
About Voltertech Co., Limited Voltertech Co., Limited is a professional provider of energy storage systems and renewable energy solutions, serving distributors, solar installers, EPC contractors, wholesalers, and project developers worldwide. Our product portfolio includes residential energy st... About Voltertech Co., Limited Voltertech Co., Limited is a professional provider of energy storage systems and renewable energy solutions, serving distributors, solar installers, EPC contractors, wholesalers, and project developers worldwide. Our product portfolio includes residential energy st...
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