Solis Meter 1ph Eastron with external CT - SDM120CT

The Solis Meter 1ph Eastron with external CT - SDM120CT (Part No: SOL-METER-1PH-EASTRON) is a single-phase multi-function energy meter designed for accurate monitoring in Solis hybrid inverter systems, featuring an external CT for non-invasive installation and RS485 Modbus output for data integration.

Product Description

The SDM120CT is a CT-operated single-phase meter suitable for 1PH hybrid inverters, providing bidirectional measurement of active energy, reactive energy, current, voltage, power, power factor, frequency, and more. It includes one external CT (100A:100mA) for easy clip-on installation. MID certified for billing accuracy, it supports RS485 Modbus or DLT645 communication for integration with Solis inverters, enabling export limitation, zero-export, and consumption monitoring.

Key Features

• CT-operated: Includes 1 x external CT (100A:100mA) for non-invasive current sensing.
• MID certified: Compliant for billing and accurate energy metering.
• Multi-parameter measurement: Tracks kWh, kVarh, W, Var, VA, PF, Hz, THD, demand, etc.
• Bi-directional metering: Measures imported and exported energy.
• Communication: RS485 Modbus/DLT645 for integration with inverters.
• Pulse outputs: Two outputs for remote monitoring.
• DIN rail mount: Compact for easy panel installation.
• High accuracy: Class 1 for active energy, Class 2 for reactive energy.

Technical Specifications

• Model: SDM120CT – Single Phase CT-Operated Energy Meter.
• Phase: Single phase (1P+N).
• Rated voltage: 230 V.
• Input current: 100mA (external CT: 100A:100mA).
• Accuracy: Voltage ±0.5%, Current ±0.5%, Power ±1%, Active Energy ±1%, Reactive Energy ±2%.
• Frequency: 50/60 Hz.
• Communication: RS485 Modbus/DLT645.
• Operating temperature: -25°C to +55°C.
• Relative humidity: <95% (non-condensing).

Dimensions & Weights

• Width: 18 mm.
• Depth: 64 mm.
• Height: 118 mm.
• Weight: ~0.3 kg (approximate).

System & Application Notes

• Ideal for Solis 1PH hybrid inverters for export limitation, zero-export, and consumption monitoring.
• Compatible with solar PV systems requiring MID-certified metering.
• Suitable for DIN rail mounting in electrical panels.
• Installation by qualified electricians; CT clips around the live conductor.
• Use for grid compliance, billing, or system optimization in single-phase setups.