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1.25MW 10kV Transformer-Isolated Energy Storage Container for Medium-Voltage AC-Side Energy Storage Unit
1.25MW 10kV Transformer-Isolated Energy Storage Container for Medium-Voltage AC-Side Energy Storage Unit
Specifications
System Position :
DC-to-AC Energy Conversion Side
Place of Origin :
China
Model Number :
BESS-125MW-W
Control Integration :
Battery & Dispatch Communication
Price :
Negotiable
Grid Interface Type :
Medium-Voltage Energy Storage Interface
Supply Ability :
5000 Units per Month
Product Category :
AC-Side Energy Storage Container
MOQ :
1 Unit
Delivery Time :
10-15 Days for Samples; 30-40 Days for Bulk Production
Deployment Format :
Containerized Project Equipment
Payment Terms :
L/C,T/T,Western Union
Project Class :
MW-Class Energy Storage Integration
Isolation Architecture :
Transformer-Isolated
Certification :
IEC62477-1 , IEC61000-6/2/4 , UN3536
Brand Name :
Voltertech
Project Buyer Type :
EPC / System Integrator / Energy Contractor
Packaging Details :
Heavy-Duty Wooden Case with Protective Foam
Description

1.25MW 10kV AC-Side Transformer-Isolated Energy Storage Container.

This AC-side containerized energy storage unit is rated at 1250kW on the DC side and 1250kVA on the AC side, with a DC operating voltage range of 1000–1500V and rated AC voltage of 10kV. The system uses transformer isolation and provides battery and dispatch communication interfaces for energy storage project integration.

From 1000–1500V DC to 10kV AC

The electrical parameters define the unit as the AC-side conversion interface of an energy storage project. The DC side operates across a 1000–1500V voltage range with 1250kW rated output power, while the AC side is rated at 1250kVA and 10kV.

DC Side 1000–1500V
1250kW
→
Energy Conversion 1309A Max. DC Current
→
Transformer Isolation Specified Isolation Architecture
→
AC Side 10kV
1250kVA

Medium-Voltage AC Interface for Energy Storage Projects

With a rated AC voltage of 10kV, the unit is intended for energy storage projects requiring a medium-voltage AC interface. Rated AC current is 72.5A, while the specified power factor is adjustable from -1 to +1.

The parameter sheet also specifies total harmonic distortion of no more than 3% at rated power.

The product uses transformer isolation and is designed as an AC-side containerized unit rather than being defined by a battery kWh capacity. Battery energy capacity is therefore not stated on this page because it is not provided in the technical parameter sheet.

Core Technical Specifications

Swipe left or right to view the full specification table.

SectionParameterSpecification
DC SideVoltage Range1000–1500V
DC SideRated Output Power1250kW
DC SideMaximum Current1309A
AC SideRated Output Power1250kVA
AC SideRated AC Voltage10kV
AC SideRated AC Current72.5A
AC SideIsolation ModeTransformer Isolation
AC SideTotal Harmonic Distortion≤3% at Rated Power
AC SidePower Factor-1 to +1 Adjustable
SystemOperating Temperature-25°C to +50°C
SystemWorking Altitude≤2000m
SystemCooling ModeAir Cooling
SystemDimensions5523 × 2400 × 2800mm
SystemNet WeightApprox. 6T

Communication for Battery and Dispatch Integration

Two communication layers are specified for system integration. CAN and RS485 are provided as battery communication interfaces, while the dispatch communication interfaces include Modbus RTU, Modbus TCP and IEC 60870-5-104.

Battery Communication CAN / RS485
Dispatch Communication Modbus RTU / Modbus TCP / IEC 60870-5-104

Operating Conditions and Container Footprint

The specified operating temperature range is -25°C to +50°C, with storage temperatures from -25°C to +55°C. Operating relative humidity is specified at 0% to 95%, and the nominal working altitude is up to 2000m.

The container dimensions are 5523 × 2400 × 2800mm with an approximate net weight of 6 tonnes. Air cooling is specified as the cooling method.

Frequently Asked Questions

Can this 1.25MW energy storage unit connect to a 10kV grid?

The AC side is rated at 10kV with a rated output of 1250kVA and rated AC current of 72.5A. Final grid connection design should be checked against the electrical requirements of the specific project.

What DC voltage is required for this 1.25MW energy storage system?

The specified DC operating voltage range is 1000V to 1500V. The DC-side rated output power is 1250kW and the maximum DC current is 1309A.

Is this a complete battery energy storage system with batteries included?

The technical parameter sheet defines this product by its DC-side input, power conversion, transformer isolation and 10kV AC output. Battery energy capacity in kWh is not specified, so the battery configuration should be confirmed separately according to the project requirements.

Does the system include transformer isolation for medium-voltage connection?

Yes. Transformer isolation is specified in the technical parameters, with the AC side rated at 10kV.

What battery communication interfaces does the system support?

CAN and RS485 are specified for battery communication, allowing communication with compatible battery-side equipment according to the project integration design.

Can this 1.25MW system connect to an EMS or power dispatch platform?

The specified dispatch communication interfaces include Modbus RTU, Modbus TCP and IEC 60870-5-104. Compatibility with the project's EMS or dispatch platform should be confirmed during system integration.

What site conditions are required for installing the 1.25MW energy storage container?

The specified operating temperature range is -25°C to +50°C, with a working altitude of up to 2000m. The container measures 5523 × 2400 × 2800mm and has an approximate net weight of 6 tonnes, which should be considered during site planning.

What information is needed before selecting a 1.25MW 10kV energy storage solution?

Key information should include the required power, battery-side DC voltage range, AC grid voltage, communication requirements, site temperature, altitude and available installation space. These values can then be compared with the system specifications before confirming the project configuration.

Evaluate Your 1.25MW / 10kV Energy Storage Project

Send us your required power, DC voltage range, AC grid voltage, communication requirements and site operating conditions. The technical configuration can then be checked against your project requirements.

Discuss Your Medium-Voltage Energy Storage Project
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1.25MW 10kV Transformer-Isolated Energy Storage Container for Medium-Voltage AC-Side Energy Storage Unit

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Product Detail
System Position :
DC-to-AC Energy Conversion Side
Place of Origin :
China
Model Number :
BESS-125MW-W
Control Integration :
Battery & Dispatch Communication
Price :
Negotiable
Grid Interface Type :
Medium-Voltage Energy Storage Interface
Contact Supplier
1.25MW 10kV Transformer-Isolated Energy Storage Container for Medium-Voltage AC-Side Energy Storage Unit

Voltertech Co.,Limited

Verified Supplier
1 Years
guangdong, guangzhou
Business Type :
Manufacturer
Main Products :
All In One Energy Storage System, Commercial Energy Storage System, High Voltage Battery System
Total Annual :
5000000-10000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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