Detailed Product Description

Specifications:

Type:  DDSF 855
Accuracy grade: 1.0 grade2.0 grade
Rated voltage (V): 220~240V
Rated current (A): 1.5(6) A; 2.5(10) A; 5(20) A; 10(40) A; 15(60) A; 20(80) A
Meter constant (imp/KWh): As shown on name plate

Main functions:

1. Measure power consumed in different periods

This series of Kilowatt Hour Meters have four tariff for four periods in billing, that is: keen, peak, normal, valley. The meters have 8 periods, in 24 hours, up to 8 periods can be programmed as keen, peak, normal and valley tariff; minimum period of each period can be 1 minute. It also has functions such as automatic switching to calendar, timing and leap year conversion.

2. Measure power consumed monthly

To manage power consumption, the Kilowatt Hour Meter has functions for total power measurement and divided period power measurement, and can store data in present month and last month.

3. Pulse output and communication interface

On Kilowatt Hour Meter installed a red LED to indicate pulse output, an infrared receiver and an infrared emitting tube for infrared communication; communication, programming and current tariff rate are indicated on LCD. Use general infrared handhold terminal (PDA) to communicate with the Kilowatt Hour Meter for automatic meter reading, operating parameters setting and timing. It also can communicate with meter through RS 485 interface. When communication is off, indicator light will be off, and when communication is on, indicator light also will be on.

4. Programming

Take button bolt off, and push the red programming button on meter, when communication indicator light is on, loosen, then programming is allowed. After programming is finished, push programming button to make its communication indicator light off, then loosen and install lead seal well.