Overview:

DDSF637 single-phase electronic multi-rate electric energy meter adopts dual-machine system configuration, and electric energy measurement and data processing are independent of each other. The electric energy measurement is completed by the special metering chip: the special imported single chip microcomputer (MCU) is used as the data processing unit to complete the functions of multi-rate and communication. The communication protocol fully complies with the requirements of DL/T645-2007, with 3 rates, 12 standard day periods, and can save 12 months of historical power; LED digital tube or LCD liquid crystal display can be selected. Loop display can be set. With RS485 and infrared communication functions, the meter can be copied or programmed through a handheld computer or RS485: the communication interface is completely isolated from the mains to ensure the safety of the system and human body. The meter system is stable, with strong anti-interference ability, and the work will never crash, and the data will be stored for more than 10 years after power failure.

Main features:

Three rates (peak, flat, valley), twelve time periods, and the minimum time interval between time periods is 30 minutes;

Store 13-month electric energy data of various tariffs including this month;

The date of power transfer (automatic meter reading day) is the hour from 0 to 23 on the 1st to the 28th;

The power (electrical energy) direction is automatically recognized, the reverse power is automatically saved and accumulated in the forward power counter at the same time, and the reverse power, the reverse start time and the total reverse operation time are automatically recorded.

Support reverse power rate recording.

With reverse pulse detection and indication function.

Electrically isolated RS485 interface, the communication protocol conforms to the DL/T645-2007 communication protocol.

Modulated two-way infrared interface, the carrier frequency is 38KHz, and the communication protocol conforms to the DL/T645-2007 protocol.

Special Chinese character LGD liquid crystal display, electric energy display 5 integers plus 1 decimal and 6 integers plus 2 decimals. The electricity data stored in the meter is a 6-digit integer plus 2 decimal places.

The cycle time of the displayed items on the display can be flexibly set within the range of 1 to 99 seconds.

Scope of use:

220V2.5 (10) A-20 (100)A is a direct access meter, especially suitable for electric energy metering and control of urban and rural residential users who have time-of-use billing requirements.