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Sungrow 4400KVA 1500VDC 4 MPPT 3 Phase PV Central Inverter - SG4400UD-MV-US
Sungrow 4400KVA 1500VDC 4 MPPT 3 Phase PV Central Inverter - SG4400UD-MV-US
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Sungrow 4400KVA 1500VDC 4 MPPT 3 Phase PV Central Inverter - SG4400UD-MV-US

Sungrow 4400KVA 1500VDC 4 MPPT 3 Phase PV Central Inverter - SG4400UD-MV-US

$337,250.00 USD
$ $337,250.00 USD
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Technical Details

  • SKU:PES-SPS-SIV-0727
  • Documents:

    Datasheet
  • Mpn number: SG4400UD-MV-US
  • Height:114
  • Width:96
  • Length:238.5
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Sungrow 4400KVA 1500VDC 4 MPPT 3-Phase PV Central Inverter

Model SG4400UD-MV-US | 34.5 kV Medium Voltage | 98.9% Max Efficiency | Containerized Design

4400 kVA
AC Output Power
98.9%
Max Efficiency
4 MPPT
Independent Trackers

Product Overview

The Sungrow SG4400UD-MV-US is a containerized medium voltage, grid-connected photovoltaic central inverter engineered specifically for 1500 Vdc utility-scale systems. This model integrates a built-in MV transformer and auxiliary power supply, delivering full power at 40°C (104°F) with high efficiency and reliable grid support capabilities.

Offering excellent efficiency and stability, this inverter is designed for large-scale solar power generation projects and utility-scale solar farms. It uses advanced power conversion technologies to guarantee high reliability and seamless grid integration. Featuring top-notch MPPT functions, durable build quality, and smart monitoring options, it provides a solid foundation for long-lasting solar energy infrastructure.

Key Features

4 Independent MPPT Trackers: Harvest power efficiently even in inconsistent string conditions. Optimized output reduces energy loss and maximizes yield across large solar arrays.

4400 kVA High-Capacity Output: Significant capacity supports large solar farms seeking steady power delivery. Full power output maintained at 40°C ambient temperature for reliable performance.

1500 VDC System Design: Reduces system costs and boosts power density, making installations more cost-effective. Wide MPP voltage range (915–1500V) accommodates diverse array configurations.

Advanced Grid Support: Stabilizes the grid with reactive power control, low-voltage ride-through capability, frequency regulation, and night reactive power function for continuous grid support.

Smart Monitoring Integration: Compatible with SCADA and cloud platforms for complete plant control. Reports daily energy yields, MPPT tracking performance, voltage patterns, and grid health with rapid fault detection.

Built for Durability: Rugged NEMA 4X/3R enclosure with advanced cooling solutions. Enhanced surge protection, anti-PID technology, and comprehensive AC/DC safety ensure long-term field performance.

How It Works

This containerized central inverter converts DC power from utility-scale PV arrays into grid-compatible AC power at medium voltage (34.5 kV). The integrated MV transformer eliminates the need for external step-up equipment, simplifying installation and reducing project costs.

High Efficiency Conversion: Durable IGBT modules combined with advanced thermal management allow reliable function under severe environmental conditions. Multiple MPPT inputs support consistent power even with challenging array setups, shading, or irregular sunlight.

Advanced Cooling System: Forced air cooling with KNAN (or optional ONAN) transformer cooling keeps performance steady in hot or high-elevation sites, preventing energy loss and ensuring reliable operation.

Scalable Integration: High adaptability for new installations and existing solar projects. Can be deployed in multi-inverter setups or central substations, offering easy scalability for project growth with compact design and efficient wiring.

DC Input Specifications

Max PV Input Voltage 1500 V
Min / Start-up Input Voltage 915 V / 955 V
MPP Voltage Range 915 – 1500 V
Full Power MPP Voltage Range @ 40°C 915 – 1337 V
Number of Independent MPPTs 4
Number of DC Inputs 28 (Negative Grounding); Optional: 24 (Floating)
Max PV Input Current 4 × 1226 A
Max DC Short-Circuit Current 4 × 3528 A
Available DC Fuse Sizes 250 A – 630 A
PV Array Configuration Negative Grounding or Floating

AC Output Specifications

AC Output Power 4400 kVA @ 40°C (Optional: 4400 kVA @ 45°C)
Nominal AC Voltage (MV) 34.5 kV
Max AC Output Current 73 A
Nominal Grid Frequency / Range 60 Hz / 57–63 Hz
Total Harmonic Distortion (THD) <3% (at Nominal Power)
Power Factor (Nominal / Adjustable) >0.99 / 0.8 Leading – 0.8 Lagging

Efficiency

Max Inverter Unit Efficiency 98.9%
CEC Inverter Unit Efficiency 98.5%
Max Efficiency (Including Transformer) 98.2%
CEC Efficiency (Including Transformer) 97.5%

Protection & Functions

DC Protection DC Load Switch + Fuse
AC Protection MV Load Switch + Fuse
Surge Protection DC Type II / AC Type II
Grid Monitoring / Ground Fault Monitoring Yes / Yes
Insulation Monitoring Yes
Overheat Protection Yes

General Specifications

Manufacturer Sungrow
Model Number SG4400UD-MV-US
Product Type Containerized MV Central Inverter with Built-in Transformer
Dimensions (W × H × D) 6058 × 2896 × 2438 mm (238.5 × 114.0 × 96.0 in)
Weight ≤36,376 lb (≤16,500 kg)
Transformer Vector Dy1 (Optional: Dy11, Yny0, YNd1)
Degree of Protection NEMA 4X (Electronic Enclosure) / NEMA 3R (Others)
Auxiliary Power Supply 5 kVA 120 VAC; Optional: 35 kVA 480 VAC + 5 kVA 120 VAC
Operating Temperature Range -35°C to 60°C (-31°F to 140°F); Optional: -40°C to 60°C
Allowable Relative Humidity 0% – 100%
Cooling Method Forced Air Cooling + KNAN (Optional: ONAN)
Max Operating Altitude 1000 m Standard / >1000 m Customized (3281 ft)
Display LED Indicators, Ethernet + WebHMI
Communication RS485, Ethernet (SunSpec/Modbus)
Night Reactive Power Function Yes
DC-Coupled Storage / Grid Charging Optional / Optional

Certifications & Compliance

Safety: UL1741, UL62109-1, CSA C22.2 No.107.1-16
Grid Interconnection: IEEE 1547-2018, IEEE 1547.1-2020
Advanced Features: UL1741 SA/SB, California Rule 21, HECO SRD V2.0
Additional: NEC 2023, PRC-024

● Available | Contact us for lead time and pricing

Customer Reviews

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

 

Sungrow 4400KVA 1500VDC 4 MPPT 3-Phase PV Central Inverter

Model SG4400UD-MV-US | 34.5 kV Medium Voltage | 98.9% Max Efficiency | Containerized Design

4400 kVA
AC Output Power
98.9%
Max Efficiency
4 MPPT
Independent Trackers

Product Overview

The Sungrow SG4400UD-MV-US is a containerized medium voltage, grid-connected photovoltaic central inverter engineered specifically for 1500 Vdc utility-scale systems. This model integrates a built-in MV transformer and auxiliary power supply, delivering full power at 40°C (104°F) with high efficiency and reliable grid support capabilities.

Offering excellent efficiency and stability, this inverter is designed for large-scale solar power generation projects and utility-scale solar farms. It uses advanced power conversion technologies to guarantee high reliability and seamless grid integration. Featuring top-notch MPPT functions, durable build quality, and smart monitoring options, it provides a solid foundation for long-lasting solar energy infrastructure.

Key Features

4 Independent MPPT Trackers: Harvest power efficiently even in inconsistent string conditions. Optimized output reduces energy loss and maximizes yield across large solar arrays.

4400 kVA High-Capacity Output: Significant capacity supports large solar farms seeking steady power delivery. Full power output maintained at 40°C ambient temperature for reliable performance.

1500 VDC System Design: Reduces system costs and boosts power density, making installations more cost-effective. Wide MPP voltage range (915–1500V) accommodates diverse array configurations.

Advanced Grid Support: Stabilizes the grid with reactive power control, low-voltage ride-through capability, frequency regulation, and night reactive power function for continuous grid support.

Smart Monitoring Integration: Compatible with SCADA and cloud platforms for complete plant control. Reports daily energy yields, MPPT tracking performance, voltage patterns, and grid health with rapid fault detection.

Built for Durability: Rugged NEMA 4X/3R enclosure with advanced cooling solutions. Enhanced surge protection, anti-PID technology, and comprehensive AC/DC safety ensure long-term field performance.

How It Works

This containerized central inverter converts DC power from utility-scale PV arrays into grid-compatible AC power at medium voltage (34.5 kV). The integrated MV transformer eliminates the need for external step-up equipment, simplifying installation and reducing project costs.

High Efficiency Conversion: Durable IGBT modules combined with advanced thermal management allow reliable function under severe environmental conditions. Multiple MPPT inputs support consistent power even with challenging array setups, shading, or irregular sunlight.

Advanced Cooling System: Forced air cooling with KNAN (or optional ONAN) transformer cooling keeps performance steady in hot or high-elevation sites, preventing energy loss and ensuring reliable operation.

Scalable Integration: High adaptability for new installations and existing solar projects. Can be deployed in multi-inverter setups or central substations, offering easy scalability for project growth with compact design and efficient wiring.

DC Input Specifications

Max PV Input Voltage 1500 V
Min / Start-up Input Voltage 915 V / 955 V
MPP Voltage Range 915 – 1500 V
Full Power MPP Voltage Range @ 40°C 915 – 1337 V
Number of Independent MPPTs 4
Number of DC Inputs 28 (Negative Grounding); Optional: 24 (Floating)
Max PV Input Current 4 × 1226 A
Max DC Short-Circuit Current 4 × 3528 A
Available DC Fuse Sizes 250 A – 630 A
PV Array Configuration Negative Grounding or Floating

AC Output Specifications

AC Output Power 4400 kVA @ 40°C (Optional: 4400 kVA @ 45°C)
Nominal AC Voltage (MV) 34.5 kV
Max AC Output Current 73 A
Nominal Grid Frequency / Range 60 Hz / 57–63 Hz
Total Harmonic Distortion (THD) <3% (at Nominal Power)
Power Factor (Nominal / Adjustable) >0.99 / 0.8 Leading – 0.8 Lagging

Efficiency

Max Inverter Unit Efficiency 98.9%
CEC Inverter Unit Efficiency 98.5%
Max Efficiency (Including Transformer) 98.2%
CEC Efficiency (Including Transformer) 97.5%

Protection & Functions

DC Protection DC Load Switch + Fuse
AC Protection MV Load Switch + Fuse
Surge Protection DC Type II / AC Type II
Grid Monitoring / Ground Fault Monitoring Yes / Yes
Insulation Monitoring Yes
Overheat Protection Yes

General Specifications

Manufacturer Sungrow
Model Number SG4400UD-MV-US
Product Type Containerized MV Central Inverter with Built-in Transformer
Dimensions (W × H × D) 6058 × 2896 × 2438 mm (238.5 × 114.0 × 96.0 in)
Weight ≤36,376 lb (≤16,500 kg)
Transformer Vector Dy1 (Optional: Dy11, Yny0, YNd1)
Degree of Protection NEMA 4X (Electronic Enclosure) / NEMA 3R (Others)
Auxiliary Power Supply 5 kVA 120 VAC; Optional: 35 kVA 480 VAC + 5 kVA 120 VAC
Operating Temperature Range -35°C to 60°C (-31°F to 140°F); Optional: -40°C to 60°C
Allowable Relative Humidity 0% – 100%
Cooling Method Forced Air Cooling + KNAN (Optional: ONAN)
Max Operating Altitude 1000 m Standard / >1000 m Customized (3281 ft)
Display LED Indicators, Ethernet + WebHMI
Communication RS485, Ethernet (SunSpec/Modbus)
Night Reactive Power Function Yes
DC-Coupled Storage / Grid Charging Optional / Optional

Certifications & Compliance

Safety: UL1741, UL62109-1, CSA C22.2 No.107.1-16
Grid Interconnection: IEEE 1547-2018, IEEE 1547.1-2020
Advanced Features: UL1741 SA/SB, California Rule 21, HECO SRD V2.0
Additional: NEC 2023, PRC-024

● Available | Contact us for lead time and pricing

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

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When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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