Deye SUN-18K-SG05LP3-EU
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Technical specifications
| Manufacturer | DEYE |
| Inverter type | Hybrid |
| Inverter phases | 3 |
| Max. AC power | 18000 |
| Max. DC power | 36000 |
| Output power | 18000 |
| MPPT | 2 |
| Amperage | 36+36A |
| WIFI | Tak |
| Ethernet | No |
| Compatible energy storage | Deye, Dyness |
| Warranty | 10 |
| CN code number | 85044085 |
| Country of origin | China |
| Weight | 50.6 |
| Width | 456 |
| Height | 650 |
| Depth | 268.5 |
Deye SUN-18K-SG05LP3-EU-SM2 is a three-phase LV hybrid inverter with a rated active power of 18 000 W, designed for larger PV installations operating with 40–60 V batteries. On the photovoltaic side, the device supports up to 28 800 W of input power, a maximum voltage of 800 V DC and two MPPT trackers with four strings in a 2+2 configuration. The maximum battery charging and discharging current is 330 A, while in off-grid mode the inverter can momentarily reach twice the rated power for 10 seconds. The maximum efficiency is 97,6%, MPPT efficiency exceeds 99%, and the IP65 protection rating supports operation in demanding hybrid systems.
Downloads
- Other
- Datasheet Deye SUN-18K-SG05LP3-EU EN
File size: 188 KB
- Declaration of Conformity Deye SUN-18K-SG05LP3-EU EN
File size: 272 KB
- Warranty Deye SUN-18K-SG05LP3-EU EN
File size: 263 KB
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Variants
Product description
Deye SUN-18K-SG05LP3-EU-SM2 – three-phase LV 18 kW hybrid inverter
Product description
Deye SUN-18K-SG05LP3-EU-SM2 is one of the most powerful models in the SUN-14/15/16/18/20K-SG05LP3-EU-SM2 series, designed for extensive photovoltaic systems with low-voltage energy storage. The inverter offers a rated active power of 18 000 W, while its PV section can accept up to 28 800 W of input power at a maximum voltage of 800 V DC. Two MPPT trackers operate within the range of 160–650 V and support four strings in a 2+2 configuration, with a maximum input current of 36 + 36 A. On the energy storage side, the device operates with lead-acid or lithium-ion batteries of 40–60 V and enables charging and discharging with a current of up to 330 A. In off-grid operation, twice the rated power is momentarily available for 10 seconds. The maximum efficiency is 97,6%, while RS485, RS232 and CAN communication, intelligent air cooling and the IP65 enclosure support the use of the model in larger hybrid installations.
Application
- larger three-phase PV systems with low-voltage energy storage,
- utility installations and small commercial facilities requiring 18 kW of power,
- hybrid systems capable of operating both on-grid and off-grid,
- systems using lithium-ion or lead-acid 40–60 V batteries,
- installations designed to operate with a diesel generator.
Key features
- rated AC active power: 18 000 W,
- maximum PV input power: 28 800 W,
- maximum PV access power: 36 000 W,
- 2 MPPT with four strings in a 2+2 configuration,
- maximum PV input current: 36 + 36 A,
- MPPT operating range: 160–650 V DC,
- maximum charging and discharging current: 330 A,
- battery voltage range: 40–60 V,
- off-grid peak power: 2 × rated power for 10 s,
- maximum efficiency 97,6%, MPPT efficiency >99% and IP65 protection rating.
Technical parameters
| Parameter | Value |
|---|---|
| Battery type | Lead-acid or lithium-ion |
| Battery voltage range | 40–60 V |
| Maximum charging current | 330 A |
| Maximum discharging current | 330 A |
| Li-Ion battery charging strategy | Self-adaptation to BMS |
| Number of battery ports | 1 |
| Maximum PV access power | 36 000 W |
| Maximum PV input power | 28 800 W |
| Maximum PV input voltage | 800 V DC |
| Start-up voltage | 160 V DC |
| MPPT voltage range | 160–650 V DC |
| Rated DC input voltage | 550 V DC |
| Maximum PV input current | 36 + 36 A |
| Maximum PV short-circuit current | 54 + 54 A |
| Number of MPPT / number of MPPT strings | 2 / 2+2 |
| Rated AC active power | 18 000 W |
| Maximum AC apparent power | 18 000 VA |
| Rated AC input / output current | 27,3 / 26,1 A |
| Maximum AC input / output current | 30 / 28,7 A |
| Maximum Grid → Load bypass current | 70 A |
| Off-grid peak power | 2 × rated power for 10 s |
| Power factor | 0,8 leading to 0,8 lagging |
| Rated input / output voltage | 220 / 380 V; 230 / 400 V, 0,85Un–1,1Un |
| Rated grid frequency | 50 / 45–55 Hz; 60 / 55–65 Hz |
| Grid connection method | 3L + N + PE |
| THDi | <3% at rated power |
| DC input current | <0,5% In |
| Maximum efficiency | 97,6% |
| Euro efficiency | 97,0% |
| MPPT efficiency | >99% |
| Communication interface | RS485, RS232, CAN |
| Monitoring mode | GPRS / Wi-Fi / Bluetooth / 4G / LAN – optional |
| Operating temperature range | -40°C to +60°C; derating above 45°C |
| Permissible ambient humidity | 0–100% |
| Maximum installation altitude | 3000 m |
| Noise level | ≤55 dB(A) |
| Protection rating | IP65 |
| Inverter topology | Transformerless |
| Dimensions | 456 × 750 × 268,5 mm, excluding connectors and mounting brackets |
| Weight | 50,6 kg |
| Cooling type | Intelligent air cooling |
Model comparison
Deye SUN-18K-SG05LP3-EU-SM2 is positioned between the 16 and 20 kW variants. Compared with the 16 kW model, it increases the rated active power from 16 000 W to 18 000 W, the maximum PV input power from 25 600 W to 28 800 W and the maximum charging and discharging current from 300 A to 330 A. The 20 kW variant increases these values respectively to 20 000 W, 32 000 W and 350 A. All three use two MPPT trackers, a 2+2 string configuration and a battery voltage range of 40–60 V. The 18 kW model therefore fits installations that require more power than the 16 kW version but do not yet need the maximum parameters of the 20 kW variant.
B2B offer
Deye SUN-18K-SG05LP3-EU-SM2 is designed for larger three-phase hybrid systems with LV energy storage. Contact Gvolt IT for a B2B quotation and to select a compatible battery and other components of the Deye system.
