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

Sungrow SG4400UD-MV-US Hybrid Inverter | Portlandia Electric Supply

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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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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

Documentation

📄 Datasheet (PDF)

● Available | Contact us for lead time and pricing

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

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?

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

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.

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

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

Documentation

📄 Datasheet (PDF)

● Available | Contact us for lead time and pricing

FAQs

Got a question? We are here to answer

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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.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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