Three-phase electrical measurement
Measures voltage, current, power, energy and frequency.
Current and voltage accuracy are ±0.5%; power and energy are ±1%; frequency is ±0.01 Hz.
CHINTPremium
CHINT DTSU666-H 100 A Three-Phase Smart Power Sensor
For reviewed Huawei FusionSolar architectures. Exact model and firmware compatibility apply.
Exact reference · DTSU666-H 100A · 3 × 100 A / 40 mA CT package
Three-phase current, voltage, power and energy measurement for compatible Huawei control architectures.
- Measurement architecture
- 3P3W / 3P4W
Voltage wiring and phase sequence must match the actual service.
- Current measurement
- 0–100 A · 3 × 100 A / 40 mA CTs
The CT ratio and orientation must match all three measured conductors.
- Reporting link
- RS485 · Modbus-RTU · 9,600 bps
Addressing and communications wiring must be commissioned.
- Equipment role
- Measurement only
The sensor does not isolate, protect, switch or independently limit export.
Do not select this sensor from the 100 A label alone. Confirm service current, CT direction and location, phase sequence, 3P3W/3P4W wiring, RS485 settings, inverter firmware and export-control configuration.
Pricing confirmed by quote
The written quote confirms the exact reference, required accessories, compatibility, delivery and commercial terms.
Availability confirmed in your written quote
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01 · Product role
What this product does in the system.
The DTSU666-H measures a three-phase service through voltage references and three current transformers, then reports the values to compatible Huawei equipment over RS485. The enclosure retains its genuine CHINT manufacturer marking.
Relevant applications
- Three-phase Huawei plant measurement
- Compatible inverter export-control architectures
- SmartLogger-mediated plant monitoring
Why ReneWave may shortlist it
- Measures 3P3W or 3P4W services through three external CTs.
- Reports measurements over RS485 Modbus-RTU.
- Supports compatible Huawei control architectures while retaining the physical CHINT marking.
Built-in capabilities
Four functions, read before the headline specifications.
External current transformers
Three 100 A / 40 mA CTs observe the conductors without switching them.
Orientation, location and phase association are commissioned.
RS485 reporting
Modbus-RTU data reaches compatible Huawei control equipment.
The documented communications rate is 9,600 bps.
Measurement-only boundary
Protection and switching remain separate equipment.
The sensor provides no isolation, overcurrent protection or independent export limitation.
System position
Measurement signals only.
The CTs observe conductors and the voltage leads provide measurement references. The sensor does not switch the conductors or carry out protection or power conversion.
Three CTs and voltage references feed measurement signals to the sensor.
Read the technical explanation
The DTSU666-H 100A is a measurement device for compatible Huawei control architectures. It uses three external CTs and voltage references, reports by RS485, and does not provide protection, switching or power conversion.
02 · Specifications
Ratings, dimensions and practical consequence.
- Wiring
- Three-phase 3P3W / 3P4W
- Phase voltage
- 176–288 V AC
- Line voltage
- 304–499 V AC
- Current range
- 0–100 A through 3 × 100 A / 40 mA CTs
- Accuracy
- Current/voltage ±0.5% · power/energy ±1% · frequency ±0.01 Hz
- Communication
- RS485 · Modbus-RTU · 9,600 bps
- Consumption
- ≤1 W
- Mounting
- DIN35
- Temperature
- -25°C to +60°C
- Humidity
- 5–95% RH non-condensing
- Marking
- Physical CHINT manufacturer marking retained
- Dimensions · Size
- 100 × 72 × 65.5 mm
- Dimensions · Weight
- 1.5 kg including cables
03 · Confirm before quotation
Four checks before this reference is quoted.
ReneWave confirms the electrical context, connected equipment, installation conditions and configuration path before the exact reference enters a written quote.
- 01
Service and CT range
Confirm 3P3W/3P4W service, voltage and the 0–100 A measurement boundary.
- 02
CT and voltage wiring
Confirm CT direction/location, phase sequence, voltage references and DIN installation.
- 03
RS485 commissioning
Confirm address, 9,600 bps communication, cable and termination.
- 04
Control compatibility
Confirm exact inverter, meter support, firmware and export-control configuration.
04 · Documents & warranty
Keep the exact reference traceable.
Documents shown here support selection and handover. The accepted order and exact manufacturer warranty document control.
Huawei DTSU666-H 100A Smart Power Sensor Datasheetdatasheet · Global · EnglishCurrent verified edition · exact reference
Huawei DTSU666-H 100A Quick Guideinstallation · Global · EnglishCurrent verified edition · exact reference
Huawei Smart PV Warranty Policy · Non-European V1.2warranty · Non-European C&I · order-specific terms apply · EnglishV1.2 · 2026-04-13 · product family
Manufacturer warranty reference
2 years
- Huawei-supported supply package: smart-meter coverage under the retained Huawei policy. Exact order and serial eligibility apply; this is not a generic CHINT warranty.
05 · Complete the system
Accessories and adjacent equipment, in one request.
Select relevant companions now. ReneWave still verifies quantities and compatibility before they appear in the written quote.
No additional equipment is published for this reference. Required accessories are confirmed during quotation.
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