DTSD722, DSSD722 Type three-phase multi-function watt-hour meter

DTSD722, DSSD722 Type three-phase multi-function watt-hour meter

1.       Introduction

DTSD722, DSSD722 Type three-phase multi-function watt-hour meter is a modern first-rate meter which is adopted to large-scale integration circuit, is used number sampling processing technology and SMT craft.

The performance index of the meter accord with the technical requirements of national standard, such as GB/T17215-2002 class 1 and 2 static AC active watt-hour meter, GB/T17883-1999 class 0.2s and 0.5s static AC active watt-hour meter, and DL/T614-1997 multi-function watt-hour meter, the communication agreement accord with DLT645-1997.

It has function such as measuring each direction of active, reactive electrical quantity and demand quantity, two 485 communication, awakening etc., its performance stability, high accuracy, operation easily.

2.       Element

When watt-hour meter working, voltage, current pass sampling circuit, then the A/C switch transform number signal, sending to DSP for processing, with adaptation of 16 A/D switch, make voltage current sampling resolving power improvement, at the same time with application of DSP, to enhance the ability of calculating of electrical quantity, to enhance the competition of product.

MCU apply to time-sharing counting and processing all kinds of output, input data.