Description

Sungrow MVS3200-US Medium Voltage Turnkey Solution for SG350HX-US String Inverters

The Sungrow MVS3200-US is a factory-integrated medium-voltage (MV) turnkey solution designed specifically for 1500Vdc SG350HX-US string inverter systems. Combining a 3200kVA oil-immersed transformer, low-voltage switchboard, integrated protection devices, and communications into a pre-assembled ISO 20-foot container, the MVS3200-US significantly reduces field installation time while providing a reliable, utility-ready medium-voltage interconnection solution.

Factory tested and engineered for commercial, industrial, and utility-scale solar projects, the MVS3200-US simplifies deployment by requiring only AC cable connections onsite, helping EPCs reduce labor costs, accelerate commissioning, and improve project reliability.

Factory-Integrated Turnkey Design

The MVS3200-US arrives fully assembled and factory tested, reducing onsite construction and installation requirements.

Key benefits include:

• Standard ISO 20-foot container
• Factory pre-assembled solution
• Factory tested before shipment
• Only AC cable wiring required onsite
• Faster installation and commissioning
• Reduced field labor costs
• Simplified project logistics

Optimized for SG350HX-US String Inverters

Designed specifically for Sungrow’s SG350HX-US 1500Vdc string inverter platform, the MVS3200-US provides an efficient medium-voltage interconnection solution.

Features include:

• Supports 1500Vdc utility-scale PV systems
• Integrated 3200kVA transformer
• 800V low-voltage input
• Medium-voltage output configurable from 12.47kV to 34.5kV
• Compatible with large utility-scale solar plants
• Optimized for modular string inverter architectures

Reliable Medium-Voltage Transformer

The integrated oil-immersed transformer delivers high efficiency and dependable long-term operation.

Transformer features include:

• 3200kVA continuous output at 40°C
• Up to 3520kVA at 30°C
• Approximately 99% transformer efficiency
• Oil-immersed construction
• KNAN / ONAN cooling
• Aluminum windings
• Multiple vector group options
• Adjustable high-voltage tap settings (0, ±2 × 2.5%)

Simplified Operation & Maintenance

Designed for long-term serviceability with minimal downtime.

Maintenance features include:

• Front-accessible equipment
• Online monitoring for fault analysis
• Modular design for easier component replacement
• RS485 and Ethernet communications
• Simplified troubleshooting
• Reduced maintenance time and operating costs

Comprehensive Safety Protection

The MVS3200-US incorporates multiple protection systems to safeguard personnel and equipment.

Protection features include:

• UL-listed transformer
• UL-listed low-voltage switchboard
• NEC code 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

Utility-Grade Construction

Built for demanding outdoor utility applications.

Environmental features include:

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

Product Specifications

• Model: MVS3200-US
• Application: Medium Voltage Turnkey Solution
• Compatible Inverter: Sungrow SG350HX-US
• Transformer Type: Oil Immersed
• Transformer Capacity: 3200kVA @ 40°C / 3520kVA @ 30°C
• Transformer Efficiency: 99% @ Full Load
• Low Voltage: 0.8kV
• Medium Voltage: 12.47kV–34.5kV
• Maximum Input Current: 254A × 10
• 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: 14,000kg

Compliance

The MVS3200-US is designed to comply with major 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 LOTO provisions

Ideal Applications

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

SKU

MVS3200-US

Why Choose the Sungrow MVS3200-US?

The Sungrow MVS3200-US provides a complete medium-voltage power conversion solution that simplifies utility-scale solar installations by integrating a high-efficiency transformer, low-voltage switchboard, protection systems, and communications into a single factory-tested platform. With reduced installation time, enhanced safety, streamlined maintenance, and proven reliability, it is an ideal choice for EPCs, developers, and utilities deploying large-scale 1500Vdc solar projects.

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