Deye SUN-20K-G05
Official manufacturer EU / international (220/380 V - 230/400 V grids) verified Sept. 1, 2026
hero product image on the official Deye product page
Identity
| brand | Deye |
| category | inverters |
| ean | UNKNOWN |
| generation | G05 |
| manufacturer | Deye (Ningbo Deye Inverter Technology Co., Ltd.) |
| market_version | EU (CE, EN 50549 / VDE-AR-N 4105 / G99 / CEI 0-21 / OVE-Richtlinie R25) |
| model | SUN-20K-G05 |
| mpn | UNKNOWN |
| product_family | SUN-18/20/22/23/25K-G05 |
| product_revision | G05 (no further suffix on the EU model; -AU and the newer -G05P3-EU-CM2 variants exist) |
| product_status | active |
| product_status_detail | active (listed in the deyeinverter.com Three Phase String Inverter category on 2026-09-01; a newer SUN-18/20/22/23/25K-G05P3-EU-CM2 datasheet dated 2025-09-22 also exists) |
| region | EU / international (220/380 V - 230/400 V grids) |
| release_year | UNKNOWN |
| sku | UNKNOWN |
Electrical
| ac_coupling_support | N/A (is itself the PV source; pairing rules with hybrids not documented here) |
| backup_eps_output_support | N/A (grid-tied only, no backup output) |
| battery_support | False |
| battery_type | N/A (grid-tied, no battery) |
| battery_voltage_class | N/A |
| battery_voltage_max_v | N/A |
| battery_voltage_min_v | N/A |
| communication_can | false (not listed; 'Communication Interface: RS485/RS232') |
| communication_ethernet | optional (monitor mode LAN dongle) |
| communication_rs232 | True |
| communication_rs485 | True |
| communication_wifi | optional (monitor mode GPRS/WIFI/Bluetooth/4G/LAN dongle) |
| ct_support | CT-operated meters are supported (SDM630 MCT V2 / DTSU666-CT); a direct CT input on the inverter was not documented |
| generator_input_support | N/A (grid-tied only) |
| grid_certifications | ['IEC 61727', 'IEC 62116', 'CEI 0-21', 'EN 50549', 'NRS 097', 'RD 140', 'UNE 217002'] |
| grid_export_control | zero export supported via an external RS485 energy meter (manual p.16-17, p.20-37) |
| grid_frequency_hz | 50 (45-55) / 60 (55-65) |
| grid_voltage_v | 220/380V, 230/400V (0.85Un-1.1Un) |
| home_assistant_integration | UNKNOWN |
| max_ac_power_kw |
22 (label 'Max. AC Output Apparent Power', 22 kVA; manual p.56, SUN-20K-G05 column)
SUN-18/20/22/23/25K-G05 Grid-connected PV Inverter User Manual — p.56 'Max. AC Output Apparent Power 22 kVA' (SUN-20K-G05 column)
|
| max_battery_charge_current_a | N/A |
| max_battery_charge_power_kw | N/A |
| max_battery_discharge_current_a | N/A |
| max_dc_voltage_v | 1100 |
| max_input_current_per_mppt_a | 26 (26+26; 22/23/25K models are 39+39) |
| max_parallel_units | UNKNOWN |
| max_pv_input_power_w |
26000
SUN-18/20/22/23/25K-G05 Grid-connected PV Inverter User Manual — p.56 'Max. PV Input Power 26 kW' (SUN-20K-G05 column)
|
| max_short_circuit_current_per_mppt_a | 39+39 (label 'Max. Short-Circuit Current', per MPPT; manual p.56) |
| modbus_rtu | UNKNOWN |
| modbus_tcp | UNKNOWN |
| mppt_max_voltage_v | 1000 |
| mppt_min_voltage_v | 200 |
| num_mppt | 2 |
| officially_supported_battery_brands | N/A (grid-tied, no battery) |
| parallel_support | UNKNOWN |
| phase_type | three-phase |
| pv_inputs_per_mppt | 2 (2+2) |
| rated_ac_power_kw | 20 |
| region_variant | EU/international (220/380V-230/400V grids) |
| smart_meter_support | yes - RS485 port, wiring published for Eastron and CHINT meters (manual p.20-37) |
| sources | [{'url': 'https://www.deyeinverter.com/deyeinverter/2024/04/16/datasheet_sun-18-25k-g05_240416_en.pdf', 'title': 'SUN-18/20/22/23/25K-G05 Three Phase String Inverter datasheet', 'doc_type': 'datasheet', 'publisher': 'Deye', 'revision': 'UNKNOWN', 'doc_date': '2024-04', 'language': 'en', 'region': 'EU', 'accessed': '2026-09-01', 'confidence': 'officially-verified'}] |
| startup_voltage_v | 250 |
| sunspec_support | UNKNOWN |
| topology | grid-tie (string inverter, no battery) |
Physical / mechanical
| bracket_dimensions_mm | UNKNOWN |
| cable_entry_positions | UNKNOWN |
| cable_gland_sizes | UNKNOWN |
| depth_mm | 220 |
| diameter_mm | N/A |
| din_rail_type | N/A |
| enclosure_material | UNKNOWN |
| height_mm | 527 |
| housing_color | UNKNOWN |
| mounting_bolt_size | M6x60 stainless steel anti-collision bolt, 4 off (manual p.02 packing list) |
| mounting_hole_diameter_mm | UNKNOWN |
| mounting_hole_spacing_mm | UNKNOWN |
| mounting_plate_dimensions_mm | UNKNOWN |
| mounting_type | ['wall'] |
| rack_units | N/A |
| screw_sizes | mounting stainless steel screws M4x12, 5 off (packing list p.02) |
| shipping_weight_kg | UNKNOWN |
| terminal_locations | underside: PV DC inputs (2 MPPT), integrated DC switch, AC output terminal, RS485/meter port and the datalogger port (manual p.05-06, p.16-17) |
| torque_specs |
AC terminals by model: SUN-18K-G05 (4 mm2) 8.5 Nm; SUN-20/22/23K-G05 (6 mm2) 8.5 Nm; SUN-25K-G05 (10 mm2) 12.4 Nm (manual p.15)
SUN-18/20/22/23/25K-G05 Grid-connected PV Inverter User Manual — p.15 AC torque table by model/wire size
|
| weight_kg |
20 (manual p.56; printed as one figure for the 18-25K range)
SUN-18/20/22/23/25K-G05 Grid-connected PV Inverter User Manual — p.56 weight '20' kg
|
| width_mm |
362
SUN-18/20/22/23/25K-G05 Grid-connected PV Inverter User Manual — p.56 'Cabinet Size 362x527x220 (Excluding connectors and brackets)'
|
Installation
| altitude_derating_note | UNKNOWN (the manual states a 4000 m permissible altitude, notably higher than the 2000 m of the Deye hybrid families) |
| clearance_bottom_mm | UNKNOWN |
| clearance_front_mm | UNKNOWN |
| clearance_left_mm | 500 ('must leave at least 500mm gap between each inverter', manual p.07-08) |
| clearance_right_mm | 500 |
| clearance_top_mm | UNKNOWN |
| cooling_airflow_requirements | UNKNOWN |
| direct_sunlight_restriction | 'avoid direct sunlight or raining' (manual p.06-08) |
| indoor_outdoor | IP65; 'Do not install in small closed spaces where air can not circulate freely ... avoid direct sunlight or raining' (manual p.06-08) |
| installation_humidity_range | UNKNOWN |
| installation_temperature_range_c | UNKNOWN |
| max_installation_altitude_m | 4000 |
| minimum_wall_thickness_mm | UNKNOWN |
| mounting_orientation |
'Install vertically with a maximum incline of +15 degrees' (manual p.07)
SUN-18/20/22/23/25K-G05 Grid-connected PV Inverter User Manual — p.07 'Install vertically with a maximum incline of +15'
|
| orientation_allowed | ['vertical', 'vertical with incline up to +15 degrees'] |
| orientation_forbidden | ['incline greater than +15 degrees', 'horizontal / face-up (implied by the +15 degree limit)'] |
| surface_requirements | strong structure capable of bearing the weight (manual p.07) |
| two_person_lift_required | UNKNOWN (20 kg unit) |
| ventilation_requirements | 'Do not install in small closed spaces where air can not circulate freely' (manual p.06-08) |
Environment
| cooling_method | forced air - 'Intelligent air cooling' (manual p.56) |
| corrosion_class | UNKNOWN |
| fan_replaceable | UNKNOWN |
| ik_rating | UNKNOWN |
| ip_rating | IP 65 (manual p.56) |
| max_altitude_m |
4000
SUN-18/20/22/23/25K-G05 Grid-connected PV Inverter User Manual — p.56 permissible altitude '4000m'
|
| nema_rating | UNKNOWN |
| noise_level_db | <= 50 dB (manual p.56) |
| operating_temperature_c | -25 to +60, >45 derating (manual p.56) |
| pollution_degree | UNKNOWN |
| relative_humidity | 0-100% permissible ambient humidity (manual p.56) |
| salt_mist_resistance | UNKNOWN |
| storage_temperature_c | UNKNOWN |
| uv_resistance | UNKNOWN |
Interfaces & connectors
| ac_terminal_type | AC output terminal, tightening torque 8.5 Nm (18-23K) / 12.4 Nm (25K) (manual p.15) |
| analog_inputs | UNKNOWN |
| auxiliary_power_output | UNKNOWN |
| backup_eps_terminal | N/A (no backup output) |
| battery_terminal_type | N/A (grid-tied, no battery) |
| bluetooth | via stick logger |
| can | not listed (communication interface row reads 'RS485/RS232') |
| cellular | optional GPRS/4G stick logger ('Monitor Mode GPRS/WIFI/Bluetooth/4G/LAN(optional)', manual p.56) |
| cloud_api | Deye Cloud / Solarman via stick logger |
| digital_inputs | UNKNOWN |
| dry_contacts | UNKNOWN |
| ethernet | optional LAN stick logger |
| generator_start_contact | N/A |
| generator_terminal | N/A |
| local_api | UNKNOWN |
| modbus_rtu | UNKNOWN (the manual documents RS485 wiring to Eastron and CHINT Modbus meters but publishes no inverter register map) |
| modbus_tcp | UNKNOWN |
| mqtt | UNKNOWN |
| ocpp | N/A |
| programmable_relay | UNKNOWN |
| protocol_notes | Zero export on this string inverter is implemented with an external energy meter on the RS485 port; the manual gives wiring diagrams for Eastron and CHINT meters (p.20-37). |
| pv_connector_type | UNKNOWN (2 MPPT, 2 strings per MPPT; connector series not named in this extraction) |
| rapid_shutdown_interface | UNKNOWN |
| relay_outputs | UNKNOWN |
| rs232 | listed in the general-data communication row 'RS485/RS232' (manual p.56) |
| rs485 | RS485 port - the primary meter connection for the zero-export function; pin configuration published for Eastron and CHINT meters (manual p.16-17, p.20-37); pins given as VCC_5V, 485_B, 485_A, GND |
| smart_load_output | N/A |
| sunspec | UNKNOWN |
| usb | UNKNOWN |
| wifi | optional WiFi stick logger, fitted into the datalogger interface and fixed with a screw (manual p.17) |
| zigbee | UNKNOWN |
Controls & display
| audible_alarm | UNKNOWN |
| buttons | 4 keys - Esc, Up, Down, Enter (manual p.06) |
| display_type | LCD+LED - a two-line LCD (manual p.06, p.56) |
| leds | 4 status indicators - DC, AC, Normal, Alarm (manual p.06) |
| local_display | True |
| mobile_app | Deye Cloud (Deye Stick Logger product page); historically Solarman Smart |
| remote_display_option | UNKNOWN |
| status_indicators | see leds |
| touchscreen | False |
| web_interface | UNKNOWN |
Protection
| afci | 'Optional' (manual p.56) |
| anti_islanding | UNKNOWN (grid codes IEC 62116 / EN 50549 are certified) |
| ground_fault_protection | 'Ground Fault Monitoring: yes' (manual p.56) |
| insulation_monitoring | UNKNOWN |
| integrated_breakers_fuses | UNKNOWN |
| integrated_dc_switch | True |
| over_current | UNKNOWN |
| over_temperature | 'Local temperature of inverter may exceed 80C while under operating' (warning, manual p.02-03) |
| over_voltage | UNKNOWN |
| overvoltage_category | OVC II(DC), OVC III(AC) (manual p.56) |
| protection_class | UNKNOWN |
| residual_current_monitoring | 'RCD Detection: yes' (manual p.56) |
| reverse_polarity | 'DC Polarity Reverse Protection: yes' (manual p.56) |
| short_circuit | UNKNOWN |
| surge_protection | 'TYPE II(DC), TYPE II(AC)' (manual p.56) |
| under_voltage | UNKNOWN |
Certifications
| emc | ['UNKNOWN'] |
| grid_codes | ['IEC 61727', 'IEC 62116', 'CEI 0-21', 'EN 50549', 'NRS 097', 'RD 140', 'UNE 217002', 'OVE-Richtlinie R25', 'G99', 'VDE-AR-N 4105'] |
| other | [] |
| regional | ['CE'] |
| safety | ['UNKNOWN (IEC/EN 62109-1/-2 expected but not surfaced in this extraction)'] |
Warranty & service
| conditions | manual p.56 general data: standard 5 years |
| cycle_life | N/A |
| design_life_years | UNKNOWN |
| extended_options_years | UNKNOWN |
| fan_replaceable | UNKNOWN |
| field_replaceable_parts | UNKNOWN |
| fuse_replaceable | UNKNOWN |
| service_intervals | UNKNOWN |
| standard_years | 5 |
Packaging & logistics
| gross_weight_kg | UNKNOWN |
| package_depth_mm | UNKNOWN |
| package_height_mm | UNKNOWN |
| package_width_mm | UNKNOWN |
| transport_restrictions | UNKNOWN |
| units_per_pallet | UNKNOWN |
Documents
datasheet
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
SUN-18-25K-G05 datasheet (2025-05-20, current, linked from the product page) — located, not retrieved
rev 30240102202350 / 2025-05-20
installation-manual
{# Located but never retrieved: listed, but deliberately not linked, and it
backs no stored value. #}
SUN-18-25K-G05 manual (2026-06-30, current revision linked from the product page) — located, not retrieved
rev 20260630
Documented compatibility
Documented pairings only. A product absent here has no fetched document naming the pairing — that is not a statement that it fails.
inverter_meter
Eastron SDM630MCT
COMPATIBLEmanufacturer-documented
Deye official Energy Meter accessory page, https://www.deyeinverter.com/product/accessory-monitoring-1/energy-meter.html (fetched 2026-09-01)
CHINT DTSU666 (and DTSU666-CT variant)
COMPATIBLEmanufacturer-documented
Deye official Energy Meter accessory page, https://www.deyeinverter.com/product/accessory-monitoring-1/energy-meter.html (fetched 2026-09-01)
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| Full Load MPPT Range | 550-850V |
| Grounding requirement | The DC input terminals of the inverter must not be grounded |
| Mounting incline | Install vertically with a maximum incline of +15 degrees |
| Permissible altitude | 4000m |
| identity.product_status | active (listed in the deyeinverter.com Three Phase String Inverter category on 2026-09-01; a newer SUN-18/20/22/23/25K-G05P3-EU-CM2 datasheet dated 2025-09-22 also exists) |