FOXESS DTSU666 3x230/400V CT input 1.5(6)A dual 485 CHINT: Intelligent energy management with maximum measurement precision
The FOXESS DTSU666 Smart Meter with CT input and dual RS-485 interface is the professional solution for second-accurate recording of all energy flows in three-phase photovoltaic and storage systems. Due to indirect measurement via highly efficient current transformers, this high-end measuring device is perfect for demanding domestic connections and commercial solar systems where direct measurement reaches its limits. As an indispensable link, the smart meter noticeably optimizes the self-consumption rate and the real-time control of your storage system.
Highlights of the FOXESS DTSU666 Smart Meter
- Smart LCD operation: Guarantees particularly simple and intuitive handling of all functions directly via the integrated LCD display on the front of the device.
- Highest measurement accuracy: Certified according to accuracy class 1 for precise power and energy data with minimal deviations.
- Precise frequency monitoring: Offers extremely exact frequency measurement with a minimal tolerance of just ±0.01 Hz.
- High voltage flexibility: Supports a wide voltage range in the three-phase network with a phase voltage of 176 VAC to 288 VAC.
- Stable RS485 interface: Ensures reliable data transmission and smooth communication with the inverter at a baud rate of 9,600 bps.
Highlights of the transformer and system components
- Flexible transformer measurement: The optimized 1.5(6)A CT input is specially designed for connecting external current transformers to safely record high currents.
- High-performance CT accessories: Three high-quality current transformers (3 CT 200A) with a practical cable length of 1 meter are already included in the scope of delivery.
- Extended measuring range: Thanks to the current transformers, enables reliable and process-safe monitoring of currents in the range of 0 to 200 A.
- Efficient continuous operation: Impresses with sustainable energy management with a minimal self-consumption of less than 0.8 W.
- Robust environmental properties: Operates completely fault-free in a wide thermal operating window from -25 °C to +55 °C.
Technical specifications: FOXESS DTSU666 CT dual 485
| Characteristic | Details |
|---|---|
| Model | DTSU666 (CT specification 1.5(6)A) |
| Grid type | 3P4W (3 phases / 4 wires) |
| Input voltage (phase voltage) | 176 VAC - 288 VAC |
| Input voltage (line voltage) | 304 VAC - 499 VAC |
| Measuring range current (with CT) | 0 - 200 A |
| Measurement accuracy voltage | ±0.5 % |
| Measurement accuracy current / power / energy | Accuracy class 1 (±1 %) |
| Measurement accuracy frequency | ±0.01 Hz |
| Energy consumption (self-consumption) | ≤ 0.8 W |
| Communication interface / baud rate | RS485 / 9,600 bps |
| Mounting type | DIN35 rail |
| Dimensions (H × W × D) | 100 × 72 × 65 mm |
| Weight (incl. cables) | 1.5 kg |
| Operating / storage temperature | -25 °C ~ 55 °C / -40 °C ~ 70 °C |
| Operating humidity | 5% RH - 95% RH (non-condensing) |
| Accessories (current transformers) | 3 CT 200A (1m cable length) |
Benefit for professionals: The FOXESS DTSU666 with CT transformer input and dual RS-485 interface offers solar technicians and specialist companies an unbeatable, standardized solution for the precise recording of high currents without direct mains disconnection in the meter cabinet. The included 200A split-core transformers drastically shorten the actual installation and wiring time, as existing phase lines are simply enclosed – this minimizes installation errors and significantly reduces installation costs per project. Thanks to the dual bus architecture, the device handles parallel communication requirements in the system absolutely without loss, while the DIN-rail mounting and durable design effectively prevent expensive service calls.
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Frequently Asked Questions
What are the advantages of using a photovoltaic system from Terra Energy?
What are the advantages of using a photovoltaic system from Terra Energy?
With a PV solution, companies can reduce their energy costs, cut CO₂ emissions, and strengthen their corporate sustainability. Our partner solutions ensure performance, efficiency, and future-proofing in B2B applications.
What happens after I purchase a system? Is there support or maintenance?
What happens after I purchase a system? Is there support or maintenance?
Our service doesn't end with your purchase. We support you from delivery and commissioning to the long-term optimization of your system. Our technical support team is available to answer questions and can arrange specialized installation or maintenance partners if needed.
What shipping and delivery options do you offer?
What shipping and delivery options do you offer?
Within Germany, we generally offer free shipping for photovoltaic systems. For international deliveries or bulky components such as modules or mounting systems, we will individually prepare a shipping solution for you (e.g., pallet delivery, truck freight).
What payment methods are available to business customers?
What payment methods are available to business customers?
We offer various payment options for business customers, including prepayment and purchase on account. Simply contact our sales department.
How does Terra Energy support me in selecting and planning my PV solution?
How does Terra Energy support me in selecting and planning my PV solution?
We offer expert advice and customized planning, taking into account location, consumption, subsidies, and technology. Together, we will develop your optimal solution, from the initial concept to commissioning.
What brands and technologies do you carry?
What brands and technologies do you carry?
We work with leading manufacturers and brands in the photovoltaic and energy storage segments to offer you state-of-the-art technology with high quality and performance. Please feel free to ask us for specific manufacturer and product details for your project.
