intelligent digital display meter

1. model: DDZY722C digital display meter 2. Normally working voltage: 0.9Un~1.1Un 3. digital display meter

Digital display meter

DDZY722C

Single-phase Intelligent Multi-control Watt-hour Meter

1 Introduction

1.1 Features and application

DDZY722Ctype watt-hour meter which is used of advanced energy metering chip, application of digital sampling technology and SMT process

This product can measure forward, reverse and four rate powers and store their data, it has function of clear, calibrate, the program, power down, open the event log table cover and have the power pulse output, the clock signal output, etc. Adopt CPU card.

1.2 Product standards

The performance index meets GB/T 15284-2002 “special requirements Multi-rate Energy Meter”, GB/T 17215.323-2008” as measurement device specific requirements some 23 static meters for reactive energy (class 2 and 3)”, GB/T 17215.321-2008” special requirement of AC measuring devices-part 21 static meters for active energy (class1 and 2)”, GB/T 17215.211-2006” AC measuring devices General requirements and test conditions of test-part 11: Measuring Equipment .

2 Function

2.1 Power measurement functions

2.1.1 It has positive active energy and the reverse energy measure function, can store data, and can accordingly it set the active portfolio.

2.1.2 It has time-measurement functions, active electric energy accumulated by the corresponding periods respectively, store the total, tip, peak, flat, valley electric energy.

2.1.3 At least 12 months of storage the every rate of electric power and total energy, data storage time for the end of 24 boundaries, or in month on the 1st to the 28th point of the whole time.

2.2 Measuring and monitoring

This meter can measure, record, display the current voltage, current (including the zero line current),power ,power factor and other operating parameters .Measurement error (reference ) does not exceed ±1%.

2.3 Event record function:

2.3.1 Permanent record the time and the data when the meter clear

2.3.2 Record the total programmed number, programming time in the recent 10, the operator code, data entry logo or programming.

2.3.3 Able to record the total number of calibrate time (not including broadcasting calibrate time), calibrate time and the operate code in the 10 times .

2.3.4 Record the total number of power-down, and the starting and ending time of recent 10 times.

2.3.5 Record the last 10 times remote control switch on and switch out event, Record switch on and switch out time of the incident and power and other data.

2.3.6 Record the total number of open meters cover, and the starting and ending time of open meters cover in recent 10 times.

2.4 Rate, time-period

With two sets of rates time table, can be automatically converted at the appointed time, the minimum time of interval is 15min; time can be set up across the zero point.

2.5 Communication

2.5.1 Infrared communication 2.6.2 RS485 communication

2.6 Signal Output

2.6.1 Power pulse output 2.6.2 Multi function signal output 2.6.3 Control output

2.7 Adopt CPU card

3 Technical data

Electricity data

Normal working voltage	0.9Un~1.1Un
Extended working voltage	0.8Un~1.15Un
Active power	≤1.5W
Apparent power	≤10VA
Data backup battery	3.6V≥1200mAh

Working data

Clock accuracy	≤ 0.5s/d(23°C)
Battery capacity	≤1200mAh
Display	LCD backlight

Climatic conditions

Normal operating temperature	-25°C ~+60°C
Limit working temperature	-40°C~+70°C
Storage and transport temperature	-40°C~+70°C
Storage and work humidity	95%

intelligent digital display meter