Deye 40kW Hybrid Solar Inverter - Three-phase, High Voltage

The Deye SUN-40K-SG01HP3-EU-BM4 is a next-generation three-phase hybrid solar inverter designed for industrial, commercial, and large residential applications that require efficient, flexible, and safe energy management.

With a nominal power of 40,000 W and a maximum output power of 44,000 W, this inverter can operate both in grid-connected (on-grid) and off-grid modes, offering an all-in-one solution for photovoltaic systems with energy storage.

Main technical features

• Compatible battery type: Lithium-ion

• Battery voltage range: 160–800 V

• Max charge/discharge current: 100 A (50+50)

• Number of battery inputs: 2

• Max PV input: 52,000 W

• Max DC input voltage: 1000 V

• MPPT range: 150–850 V

• Number of MPPTs: 4

• Strings per MPPT: 2+2+2+2

• PV input current: 36+36+36+36 A

• PV short-circuit current: 55+55+55+55 A

• AC nominal output: 40,000 W

• Nominal AC output current: 60.7/58 A

• Max AC output current: 66.7/63.8 A

• Max unbalanced three-phase current: 70 A

• Continuous AC passthrough: 200 A

• Off-grid peak power: 1.5× nominal power for 10 seconds

• Output frequency and voltage: 50/60 Hz; 3L/N/PE 220/380, 230/400 V

• Adjustable power factor: 0.8 leading to 0.8 lagging

• Total harmonic distortion (THDi): <3%

• DC current injection: <0.5%

• Maximum efficiency: 97.6%

• European efficiency: 97.0%

• MPPT efficiency: 99.9%

Built-in protections

• Anti-islanding protection

• Reverse polarity protection

• Insulation resistance detection

• Residual current monitoring

• Overcurrent and short-circuit protection

• Surge protection (DC Type II / AC Type III)

• Arc fault circuit interrupter (optional AFCI)

Key advantages

• Parallel operation of up to 10 units

• Diesel generator compatibility

• Smart battery management with 6 charge/discharge periods

• 100% unbalanced three-phase output

• European certifications: CEI 0-21, EN 50549, VDE-AR-N 4105, among others

Frequently asked questions (FAQ)

Is this inverter compatible with lithium batteries from other brands?
Yes, as long as they are high-voltage batteries (160–800 V) and compatible with CAN communication. BMS compatibility should be verified.

Can it be used in off-grid installations?
Yes, the SUN-40K supports off-grid operation and can work with diesel generators as backup.

How many inverters can be connected in parallel?
Up to 10 units of the same model can operate in parallel, both on-grid and off-grid.

What kind of electrical fault protection does it have?
It includes anti-islanding, short-circuit, overcurrent, reverse polarity, surge protection, and optional AFCI.

What is the noise level during operation?
The inverter operates at a noise level below 65 dB thanks to its intelligent cooling system.

What certifications does it comply with for European installations?
It complies with CEI 0-21, EN 50549, VDE-AR-N 4105, and other European standards.

What is the product warranty?
The standard warranty is 5 years, extendable to 10 years.