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The Smart Meter CHINT Tri + CTs is a three-phase electricity meter with three external current transformers specially designed for three-phase photovoltaic installations fitted with a Solenso DTU-SLS or DTU-SLT router.
Why a three-phase meter with 3 CTs?
DTSU666 high-capacity three-phase model
The CHINT DTSU666 (3P4W) meter offers 1% accuracy with Modbus RTU RS485 communication. Compatible with 3 CT ratings: 100A (10-30kWp), 300A (30-90kWp) or 600A (90-180kWp).
Professional three-phase functionality
Professional applications
Ideal for SMEs, light industry, collective buildings, farms and large three-phase homes with Solenso microinverters.
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CHINT Tri smart meter + CTs for Solenso three-phase router
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The Smart Meter CHINT Tri + CTs is a three-phase bi-directional electricity meter designed for three-phase photovoltaic installations equipped with a Solenso SLS or SLT router. With its three external current transformers, it provides accurate phase-by-phase measurement of solar production, load consumption and energy exported to the grid.
The three-phase model with CTs is essential for three main reasons:
This kit uses the CHINT DTSU666 meter, a three-phase 3P4W model (3 phases + neutral) compatible with three current transformer ratings :
Important: The current transformers must be supplied by Solenso to guarantee compatibility and measurement accuracy with the DTU-SLS/SLT router.
The CHINT DTSU666 meter offers 1% accuracy on current, power and energy measurements, in line with professional standards for medium to high-power installations.
This accuracy enables reliable monitoring of all three phases independently, which is essential for optimising self-consumption and detecting anomalies (phase imbalance, localised over-consumption).
This meter is designed to work in perfect synergy with the Solenso DTU-SLS and DTU-SLT routers, which collect and supervise photovoltaic microinverter installations. Thanks to Modbus RTU communication via RS485, the system offers :
The CHINT DTSU666 meter is mounted on a 35 mm DIN rail and occupies 4 modules (72 mm). The three current transformers are simply clamped around the three phases (L1, L2, L3), with no need to break the electrical circuit.
The Modbus RTU protocol via RS485 interface is the industrial standard for medium to high-power three-phase installations. This connectivity guarantees :
Select the CT rating according to the installed power:
Tip: Allow a safety margin of 20-30% to anticipate future extensions to the installation.
The Smart Meter CHINT Tri + CTs is ideal for :
Combined with the DTU-SLS router, the meter enables comprehensive monitoring via the Solenso mobile application:
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