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Smart Meters
Huawei DTSU666-HW
Official manufacturer
GLOBAL
verified Sept. 3, 2026
Identity
| category |
smart_meters
|
| manufacturer |
Huawei
|
| marketing_name |
Smart Power Sensor
|
| model |
DTSU666-HW
|
| note |
Distinguished from the DTSU666-H by direct current measurement without external CTs up to 80 A. Above 80 A, CT connection is required.
|
| region |
GLOBAL
|
| variant |
direct-measurement (no external CT) three-phase, up to 80 A
|
Electrical
| accuracy_class |
Class 1 (error within ±1%)
|
| ct_ratio |
n/a for direct connection; UNKNOWN when CT-connected
|
| direct_measurement_current_a |
80
|
| frequency_hz |
50 / 60
|
| measurement_method |
direct up to 80 A; external CT required above 80 A
|
| 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
|
| phase_configuration |
three-phase
|
| power_consumption_w |
UNKNOWN
|
| 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 |
UNKNOWN
|
| mounting_type |
DIN35 mm rail
|
| weight_kg |
UNKNOWN
|
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 |
UNKNOWN
|
| max_operating_altitude_m |
UNKNOWN
|
| operating_humidity_pct_rh |
UNKNOWN
|
| 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 |
UNKNOWN
|
Warranty & service
| standard_warranty_years |
UNKNOWN
|
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| manufacturer_legal_entity_as_printed | UNKNOWN |
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