# Deye SUN40 45 50KG04

Type: solar inverter
Manufacturer: Deye
URL: https://inverterdata.com/en/deye/deye-sun40-45-50kg04/
Manufacturer source: https://www.deyeinverter.com/product/three-phase-string-inverter/SUN40-45-50KG04.html
Database: InverterData (inverterdata.com)
License: free to quote with attribution to inverterdata.com

## Overview

Professional solar installations demand robust inverter technology, and this 45kW three-phase solution from Chinese manufacturer Deye delivers exceptional performance for commercial and industrial applications. With its impressive 98.7% maximum efficiency and 98.1% European efficiency rating, this inverter maximizes energy conversion while minimizing losses.

The unit features four independent MPPT channels supporting up to 40A each, with a wide voltage range from 200-1000V DC input and maximum 1100V tolerance. Its weatherproof IP65 enclosure ensures reliable operation across extreme temperatures from -25°C to +60°C. At just 39kg, installation is manageable despite the substantial 49.5kW peak AC output capacity. The non-isolated design maintains low 3% total harmonic distortion while supporting both 50Hz and 60Hz grid frequencies.

## Specifications

| Specification | Value |
| --- | --- |
| Nominal AC Power | 45000 W |
| Maximum AC Power | 49500 W |
| Maximum Efficiency | 98.7 % |
| European Efficiency | 98.1 % |
| MPPT Voltage Range | 200-1000 V |
| Maximum DC Input Voltage | 1100 V |
| Number of MPPT Channels | 4 |
| Maximum DC Input Current per MPPT | 40 A |
| AC Output Voltage | 220/380V, 230/400V |
| AC Output Frequency | 50/60 Hz |
| Total Harmonic Distortion (THD) | 3 % |
| Weight | 39 kg |
| Enclosure Protection Rating | IP65 |
| Operating Temperature Range | -25 to +60 °C |
| Inverter Type | Non-Isolated |
| Number of Phases | 3 |

Not published by the manufacturer: Output Wave Type.

## Frequently asked questions

### What size installation is the Deye SUN40-45-50KG04 sized for?

The figures recorded for the Deye SUN40-45-50KG04 are 45000 W of nominal AC power and 49500 W maximum, a ten percent headroom above nameplate. That places it on commercial rooftops and mid-size ground mounts of around 45 kW, where a generously oversized array can use the extra 4500 W on clear days.

### How many MPPT inputs does the Deye SUN40-45-50KG04 have?

The Deye SUN40-45-50KG04 has four MPPT channels, each accepting up to 40 A of DC input current. Four independent trackers let a roof be split across different orientations or pitches without one shaded section dragging down the rest, and 40 A per channel is enough to parallel more than one string on each tracker.

### What string voltages does the Deye SUN40-45-50KG04 accept?

The Deye SUN40-45-50KG04 tracks between 200 V and 1000 V and withstands 1100 V of maximum DC input voltage. Strings must stay under 1100 V at the coldest expected temperature and remain above 200 V when hot, a wide window that allows the long strings typical of commercial arrays.

### How efficient is the Deye SUN40-45-50KG04?

The Deye SUN40-45-50KG04 is rated at 98.7 percent maximum efficiency and 98.1 percent European efficiency. The weighted European figure is the one to use when estimating annual yield, and the small gap between the two means conversion losses stay near two percent across most of the working range rather than only at full load.

### What grid does the Deye SUN40-45-50KG04 connect to?

The Deye SUN40-45-50KG04 is a three-phase inverter whose AC output is given as 220/380 V or 230/400 V at 50 or 60 Hz. Those are alternative grid configurations, each written as phase voltage over line voltage for one four-wire network, so the unit is set to whichever the local supply actually is.

### Where can the Deye SUN40-45-50KG04 be mounted?

The Deye SUN40-45-50KG04 is rated IP65 and specified from -25 to +60 degrees Celsius, so an outdoor wall or frame is within its declared limits in most climates. At 39 kg it is not a one-person lift: plan on two installers or a hoist, and on fixings rated for that mass.

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