Sungrow DTSU666
Official manufacturer GLOBAL verified Sept. 3, 2026
Identity
| category | smart_meters |
| device_type | Three-phase DIN-rail energy meter for Sungrow inverter systems |
| direct_or_ct | Direct-connect - the EU datasheet filename and title are "DTSU666 5(80)", i.e. a 5 A basic / 80 A maximum direct-connected meter |
| manufacturer | Sungrow |
| model | DTSU666 |
| phase_count | Three-phase |
| product_name | DTSU666 |
| product_type | Three-phase Smart Energy Meter |
| region | GLOBAL |
Electrical
| accuracy_class | Class 1 |
| ct_ratio | Not applicable in the direct-connect configuration; the Compatibility List 2026 V4.3 shows external CT options for CT-based Sungrow topologies |
| grid_frequency | 50/60 Hz |
| input_voltage_range | 57.7 / 100 Vac - 265 / 460 Vac |
| max_operating_current_a | 80 |
| nominal_voltage | 230 Vac / 400 Vac |
| power_consumption | < 1.5 W (6 VA) |
Physical / mechanical
| dimensions_w_h_d_mm | 72 x 65 x 100 (as printed "72 * 65 * 100 mm") |
| din_modules | UNKNOWN |
| display | UNKNOWN |
| weight_kg | 0.4 |
Installation
| export_limitation_role | UNKNOWN |
| mounting | 35 mm DIN-rail |
| role | Import/export measurement at the grid connection point for Sungrow inverter systems |
| topology | UNKNOWN |
Environment
| humidity | 75 % |
| max_altitude_m | UNKNOWN |
| operating_temperature_c | -30 to +60 |
Interfaces & connectors
| baud_rate | UNKNOWN |
| communication | RS485 |
| modbus_address | UNKNOWN |
| protocol | UNKNOWN |
Protection
| ip_rating | IP20 |
Certifications
| marks | UNKNOWN |
| mid | UNKNOWN |
| standards | UNKNOWN |
Documents
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| documented_relationship:inverter_meter | {"to_manufacturer": "Sungrow", "to_model": "SHxxRS; SHxxT; SG2.0-6.0RS; SG33-110CX; SG25-125CXP2; SG150CX; SH125CX; SGxxRS; SGxxRT", "relationship_type": "inverter_meter", "match_level": "series", "communication_protocol": "RS485 / Modbus RTU", "required_firmware": "UNKNOWN", "required_settings": "UNKNOWN", "required_accessories": "Externally purchased CTs for CT-based topologies (see footnote)", "region": "EU", "source": "COMPATIBILITY LIST PUBLIC 2026 | VERSION 4.3", "source_url": "https://info-support.sungrowpower.com/market-material/41ab25da-0bbb-451b-8a51-fd4abd3be0bd.pdf", "source_page": "UNKNOWN", "confidence": "officially-verified", "status": "COMPATIBLE", "notes": "Compatibility list names inverter SERIES, not individual models - kept at series level, deliberately not upgraded to model level."} |
| manufacturer_legal_entity_as_printed | Sungrow Power Supply Co., Ltd. |