Chint Single Phase Revenue Grade Meter DTSU666

The DTSU666 is a DIN-rail, three-phase (3P4W) smart energy meter for sub-metering and PV/BESS applications. It’s MID B+D certified, measures multi-parameter power/energy, and communicates via RS-485 (Modbus-RTU) for easy integration with inverters, gateways, or EMS.

Key Benefits

MID B+D Certified: Revenue-grade compliance for billing/sub-metering.

Multi-Parameter Monitoring: Energy (import/export), kW/kvar/kVA, Irms/Vrms, frequency, PF.

Easy Integration: RS-485 Modbus-RTU with selectable baud rates up to 19.2 kbps.

Installer-Friendly: DIN-rail mount, large backlit LCD, LED pulse output.

Special Technology

High Accuracy: Direct-connected Class B / 1.0 accuracy with 800 imp/kWh constant.

Wide Voltage Window: 3×220/380…3×240/415 Vac, 0.8–1.15·Un operating range.

Warranty

Manufacturer’s Standard Warranty (CHINT).

Best Uses

Solar & Storage Monitoring: Whole-home PV/battery metering and export/import tracking.

Commercial Sub-Metering: Tenant and load-level measurement with BMS/EMS via Modbus.

Specifications Table

Specification	Data
Model	DTSU666 (Three-Phase Smart Meter)
Mounting	DIN rail
Wiring	3P4W (three-phase, four-wire)
Accuracy	Direct: Class B / 1.0; Constant: 800 imp/kWh
Voltage (Un)	3×220/380 V … 3×240/415 V; operating 0.8·Un–1.15·Un; ≤2 W, 10 VA consumption
Current (Direct)	0.25–5(80) A
Frequency	50/60 Hz
Display / Indicators	Backlit LCD; LED pulse output
Communications	RS-485, Modbus-RTU; 1200/2400/4800/9600 (default)/19200 bps
Measured Values	Import/Export kWh, kvarh; kW, kvar, kVA; Irms, Vrms, Frequency, PF, etc.
Environmental	Op. −25 °C to +55 °C; Storage −40 °C to +70 °C; RH ≤95% (non-condensing)
Ingress Protection	IP20
Dimensions (W × H × D)	2.83 × 3.94 × 2.56 in
Weight	0.73 lb
Compliance	EN 50470-1/-3; MID B+D certified

About Chint:

CHINT Group Co., Ltd. (CHINT) is a global provider of smart-energy solutions, founded in 1984 in China. Its operations span over 140 countries with more than 50,000 employees. CHINT’s core focus areas include green energy, intelligent electrical systems, and low-carbon solutions.

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Chint Single Phase Revenue Grade Meter DTSU666

Chint Single Phase Revenue Grade Meter DTSU666

Chint Single Phase Revenue Grade Meter DTSU666

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