Huawei DTSU666-HW
Official manufacturer GLOBAL verified Sept. 23, 2026
Page 2 of DTSU666-HW Smart Power Sensor Quick Guide (ZTY0.464.1516) (https://solar.huawei.com/-/media/Solar/attachment/pdf/apac/datasheet/DTSU666-HW_20230131.pdf)
Identity
| brand | Huawei |
| category | smart_meters |
| manufacturer | Huawei |
| manufacturer_key | huawei |
| marketing_name | Smart Power Sensor |
| model | DTSU666-HW |
| model_key | dtsu666hw |
| note | Distinguished from the DTSU666-H by direct current measurement without external CTs up to 80 A. Above 80 A, CT connection is required. |
| product_family | DTSU666 |
| product_status | active |
| region | GLOBAL |
| series | Smart Power Sensor |
| variant | direct-measurement (no external CT) three-phase, up to 80 A |
Electrical
| ac_voltage_v |
230 V AC / 400 V AC
DTSU666-HW Smart Power Sensor Quick Guide (ZTY0.464.1516)
|
| accuracy_class | Class 1 |
| bidirectional_metering | True |
| ct_ratio | n/a for direct connection; UNKNOWN when CT-connected |
| direct_measurement_current_a | 80 |
| frequency_hz | 50 / 60 |
| grid_frequency_hz |
50/60
DTSU666-HW Smart Power Sensor Quick Guide (ZTY0.464.1516)
|
| measurement_method | direct up to 80 A; external CT required above 80 A |
| measurement_type | Current Transformer (CT) |
| measurement_voltage_range_v | 90 - 1000 V line voltage; direct connection ≤500 V, potential transformers required above 500 V |
| nominal_voltage_v | 230 V AC / 400 V AC |
| official_manual_url |
https://support.huawei.com/enterprise/en/doc/EDOC1100242207
DTSU666-HW Smart Power Sensor Quick Guide - Huawei — search-index listing (query: DTSU666-H smart power sensor quick guide user manual); document located, not fetched
|
| phase_configuration | three-phase |
| phase_count | 1 |
| power_consumption_w | — |
| power_grid_type | three-phase four-wire or three-phase three-wire |
Physical / mechanical
| dimensions_mm | 72 x 80 x 62 mm (±1 mm tolerance) |
| din_modules | — |
| mounting_type | DIN35 mm rail |
| weight_kg | — |
Installation
| connected_device | SmartLogger or inverter via RS485 |
| import_export_measurement | Measures import/export at the point of connection; no explicit sign convention published in the fetched quick guide. |
| topology | DIN-rail mounted; connects to a Huawei inverter or SmartLogger via RS485; measures at the point of connection. |
Environment
| ip_rating | — |
| max_operating_altitude_m | — |
| operating_humidity_pct_rh | — |
| operating_temperature_c | -25 to +60 |
Interfaces & connectors
| baud_rate_bps | 4800 / 9600 / 19200 / 115200 (default 9600) |
| communication_interface | RS485 |
| modbus_address_range | 1-247 (default 011) |
| protocol | Modbus-RTU |
| register_map_public | — |
Certifications
| list | — |
Warranty & service
| standard_warranty_years | — |
Documents
Recorded conflicts
electrical.accuracy_class Resolved — accepted incoming value
Class 1 (error within ±1%) — stored value
Class 1 — Accuracy Class: Class 1 (error within ±1%)
Detected during import wave4-2026-09-batch09
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| builder_completeness | partial |
| manufacturer_legal_entity_as_printed | UNKNOWN |
| region_notes | Document served from Huawei's APAC attachment path; the guide itself is not market-specific. |