D(T)S7666-DGL Electronic Three-phase High Power Watt-hour Meter

Overview

DT (S) S7666 electronic three- phase high- power electric energy meter is used for active energy metering in power supply departments, enterprises, and agricultural power equipment. This meter uses imported dedicated large-scale integrated circuits, 16 bit A/D conversion, digital multipliers, digital sampling processing technology, and SMT technology, it also adopts LCD display. The electric energy meter with infrared and RS485 communication functions conforms to the standard DL/T 645- -2007 communication protocol, effectively realizing the remote meter reading function.The meter is accurate, stable, reliable, and has good characteristics of anti electromagnetic interference, low power consumption, high accuracy, anti theft, wide range,and long life. This instrument complies with the standard GB/T 1721 5.321-2008 and ensures high current accuracy calibration for production.

Working principle

This electric energy meter adopts three-phase power supply mode, and can work normally when the high-power is below 1 60KW.

When the electric energy meter is working, the voltage and current are sampled by the circuit and sent to a large- scale dedicated integrated circuit. After being calculated by a digital multiplier,they are converted into electric energy pulses, which drive a liquid crystal register for electric energy metering. 

Specification, model and technical indicators

Specification and model: voltage:3 x 220/380V

current3 x 20(160)A、3 x 40(200)A、3 x 50(250)A、

3.2. Starting: Within the reference voltage, the instrument shall be capable of continuously measuring electric quantity with a load current of 0.004Ib.

3.3. Sneak: When the voltage is applied to 115% and there is no current in the current line,the test output of the instrument shall not exceed one pulse.

3.4. Power consumption:≤4.0VA

Key Benefits

This product does not require an external current transformer, but can be directly connected to complete high- power power consumption and directly read the watt-hour consumption of the electricity meter, greatly improving the accuracy of electric energy measurement, saving installation time, reducing installation space, and effectively preventing false connection and intentional theft of electricity due to current transformers.

Installation and wiring

5.1. Before installing and using the electric energy meter, check whether the lead seal is intact. If there is no lead seal or the storage time is more than 1 year, ask the relevant department to recheck it before installing and using it.

5.2. The instrument shall be installed indoors, and must be protected by a dedicated instrument box when installed outdoors.

5.3. The electric energy meter is fixed with M4 screws, and there are two mounting holes on the upper and lower parts respectively, using M4 x 12 Ordinary screws are fixed to the insulating board, and the recommended installation height is about 1.6m. Installation dimension (cm) and wiring method of electric energy meter: