Product Introduction

The TO-120-3D3Y6 is a high-accuracy multifunction monitoring meter designed for comprehensive power measurement and analysis. It supports real-time measurement, harmonic analysis, bidirectional active and reactive energy metering, time-of-use billing, demand monitoring, power quality analysis, real-time waveform display, and event recording. Equipped with abundant I/O ports for local device control and monitoring, the meter features an integrated RS-485 communication port with MODBUS-RTU protocol, enabling seamless integration into intelligent distribution systems and energy management platforms. With its competitive performance, it serves as a direct replacement for conventional transducers, meters, and auxiliary units, making it widely applicable in energy management systems, power monitoring systems, industrial and mining facilities, public buildings, intelligent buildings, and switchboard power networks.

Product Data Sheet

Product Model: TO-120-3D3Y6

Real-time Measurement: Three-phase voltage, three-phase current, power, frequency, power factor

Electric Energy Measurement: Active power, reactive power, bidirectional measurement

Demand Measurement: Voltage (U), current (I), power (P), reactive power (Q)

Power Pulse Output: Dry contact point

Analog Output: 4–20mA / 0–5V

Switch Input: Dry contact point

Switching Output: AC250V/5A, for remote control or alarm

Leakage Current Detection: Zero sequence current

Communication: RS-485 port, MODBUS-RTU protocol

Display Type: Special LCD display board

Connection Type: Three-phase four-wire / three-phase three-wire

Measurement Range: 380V/100V, 5A/1A

Overload Capacity: Continuous: 1.2 times rated; Instantaneous: 2 times rated

Power Consumption: <1VA

Frequency Range: 45–65Hz

Auxiliary Power Supply: AC85–265V, DC100–300V, ≤5VA

Energy Pulse Output: Dry contact optical coupler output, fixed pulse width: 80ms ±20%

Communication Parameters: RS-485 with physical layer isolation; MODBUS-RTU protocol; baud rate: 1200–38400 (default 9600); data format: N81, E81, O81 (default N81)

Analog Output Specifications: 0/4–20mA or 0–5/10V; programmable for transmitted parameter and scaling

Switching Output Specifications: Programmable for remote or alarm function; contact capacity: 5A/250VAC, 5A/30VDC; configurable for alarm conditions based on energy, switch input, analog input, or remote control

Remote Switch Input: Dry contact input; programmable to trigger alarm output

Measurement Accuracy: Energy: 0.5S; Frequency: ±0.1Hz; Active power: 0.5S; Reactive power: 1S

Operating Environment: Working temperature: -10°C to +55°C; Storage temperature: -20°C to +75°C; Relative humidity: <80% RH

Safety Specifications: Isolation between signal, power supply, and output terminals; insulation resistance: >5MΩ; Dielectric withstand voltage: AC 2kV between signal input, power supply, and output circuits