Description

Sungrow MVS4480-US Medium Voltage Turnkey Solution for SG350HX-US String Inverters

The Sungrow MVS4480-US is a factory-integrated medium-voltage (MV) turnkey solution engineered for 1500Vdc SG350HX-US string inverter systems used in utility-scale solar power plants. Featuring a 4480kVA oil-immersed transformer, integrated low-voltage switchboard, comprehensive protection devices, and communication interfaces within a pre-assembled ISO 20-foot container, the MVS4480-US simplifies medium-voltage interconnection while reducing onsite labor and commissioning time.

Factory assembled and fully tested prior to shipment, the MVS4480-US provides EPCs, developers, and utilities with a reliable, high-capacity MV station designed to accelerate project deployment and maximize long-term system reliability.

Factory-Integrated Turnkey Solution

The MVS4480-US is delivered as a complete plug-and-play medium-voltage station that minimizes onsite installation requirements.

Key advantages include:

• Standard ISO 20-foot container
• Factory pre-assembled construction
• Fully tested before shipment
• Only AC cable wiring required onsite
• Faster commissioning
• Reduced installation labor
• Simplified logistics and transportation

Designed for SG350HX-US String Inverters

Optimized specifically for Sungrow’s SG350HX-US 1500Vdc string inverter platform, the MVS4480-US supports high-capacity utility-scale PV installations.

Features include:

• Supports 1500Vdc solar systems
• Integrated 4480kVA transformer
• 800V low-voltage input
• 34.5kV medium-voltage output
• High-capacity design for large solar plants
• Ideal for modular string inverter architectures

High-Efficiency Transformer

The integrated oil-immersed transformer delivers dependable utility-grade performance.

Transformer highlights include:

• 4480kVA output at 40°C
• Up to 4928kVA at 30°C
• Approximately 99% efficiency at full load
• Oil-immersed transformer design
• KNAN / ONAN cooling
• Aluminum windings
• Multiple vector group options
• Adjustable high-voltage tap settings (0, ±2 × 2.5%)

Simplified Operation & Maintenance

Designed for efficient servicing and reduced downtime throughout the equipment lifecycle.

Maintenance features include:

• Front-access maintenance
• Online monitoring for fault analysis
• Modular equipment design
• Easy replacement of major components
• RS485 communication
• Ethernet connectivity
• Reduced operating and maintenance costs

Comprehensive Safety Protection

The MVS4480-US incorporates multiple safety systems designed to protect both equipment and personnel.

Protection features include:

• UL-listed transformer
• UL-listed low-voltage switchboard
• NEC-compliant design
• Lockout/Tagout (LOTO) provisions
• Expulsion fuse with backup fuse
• Oil temperature alarm and trip
• Oil level trip
• Pressure trip
• Type II surge protection
• Integrated transformer alarm contacts

Built for Utility Environments

Engineered for reliable outdoor operation under demanding environmental conditions.

Environmental specifications include:

• Type 3R enclosure
• Operating temperature: -30°C to 60°C
• Relative humidity: 0–95% (non-condensing)
• Standard operating altitude up to 1,000m
• Custom configurations available for higher elevations
• Rugged containerized construction for long-term durability

Product Specifications

• Model: MVS4480-US
• Application: Medium Voltage Turnkey Solution
• Compatible Inverter: Sungrow SG350HX-US
• Transformer Type: Oil-Immersed
• Transformer Capacity: 4480kVA @ 40°C / 4928kVA @ 30°C
• Transformer Efficiency: 99% @ Full Load
• Low Voltage: 0.8kV
• Medium Voltage: 34.5kV
• Maximum Input Current: 254A × 14
• Frequency: 60Hz
• Cooling Method: KNAN / ONAN
• Oil Type: Ester Oil or Mineral Oil (-40°C)
• Transformer Winding: Aluminum
• Protection Rating: Type 3R
• Communication: RS485 & Ethernet
• Auxiliary Power Supply: 5kVA, 120Vac (Optional 40kVA Auxiliary Supply)
• Dimensions (W × H × D): 6058 × 2896 × 2438 mm
• Approximate Weight: 16,000kg (35,274 lb)

Compliance

The MVS4480-US is designed to comply with key North American standards, including:

• IEEE C57.12.00
• IEEE C57.12.90
• IEEE C57.12.28
• UL 891 (Low-Voltage Switchboard)
• UL 508 (Auxiliary Power Cabinet)
• NEC-compliant design with Lockout/Tagout (LOTO) provisions

Ideal Applications

• Utility-scale solar farms
• Independent Power Producer (IPP) projects
• Large commercial photovoltaic systems
• Renewable energy generation facilities
• Medium-voltage interconnection stations
• Utility substations
• Large distributed generation projects

SKU

MVS4480-US

Why Choose the Sungrow MVS4480-US?

The Sungrow MVS4480-US provides a complete medium-voltage interconnection solution for large-scale 1500Vdc solar installations by integrating a high-efficiency 4480kVA transformer, low-voltage switchboard, protection systems, and communications into a single factory-tested platform. Designed to minimize installation time, simplify maintenance, and deliver dependable long-term performance, it is an ideal choice for EPCs, utilities, and developers building high-capacity solar power plants.

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