Chint DTSU666 3-Phase, Bidirectional Four-Quadrant Electric Meter with Network Analyzer Functions

The three-phase, bidirectional Chint DTSU666 energy meter is designed for measuring energy consumption and production in industrial and photovoltaic installations. The device performs measurements in four quadrants, allowing for the differentiation of energy flow in both directions and analysis of basic network parameters.

The manufacturer is Chint (meter line designated as DDSU/DTSU666) – a company specializing in electrical energy devices and energy monitoring solutions. The DTSU666 model is a three-phase variant with RS485 communication and Modbus-RTU protocol, offered in a version adapted for DIN rail mounting.

Electrical Parameters

• Network type: 3P4W / 3P3W
• Input voltage range (phase voltage): 154 Vac ~ 286 Vac
• Line voltage range: 290.5 Vac ~ 539.5 Vac
• Phase voltage range (alt.): 168 Vac ~ 312 Vac
• Current measurement range: 0.25–5(80) A
• Self-consumption (power consumption): ≤ 1.5 W
• Accuracy class: Class B
• Communication interface: RS485
• Transmission speed: 9,600 bps
• Communication protocol: Modbus-RTU

Mechanical and Environmental Parameters

• Dimensions (H x W x D): 100 x 72 x 65.5 mm (3.9 x 2.8 x 2.6 inch)
• Weight (including cables): 1.5 kg (3.3 lb)
• Mounting type: DIN rail 35 (optionally front mounting)
• Operating temperature range: -10°C ~ +45°C
• Storage temperature range: -25°C ~ +75°C
• Operating humidity: < 75% without condensation
• Included accessories: RS485 cable (10 m) with RJ45 connector