Three-phase Electronic Multi-functional Energy Meter

Detailed Product Description

Brief Introduction

Three-phase electronic multi-functional energy meter is used to measure the active energy, reactive energy and maximum demand in the three-phase AC grid at 50Hz or 60Hz at different time.

The product conforms to the standards GB/T 17215.301-2008, DL/T615-1997 and DL/T645-1997.

Function and Feature:

(1). Measure the active power: Measure the positive active power and reverse active power at different time

(2). Measure the reactive power: Measure the reactive power in the 4 quadrants at different time.

(3) Measure the apparent power: Measure the positive apparent and reverse apparent power at different time.

(4) Measure the maximum demand:  Function of measuring the active positive and reverse, apparent positive and reverse, reactive quadrants rate demand. There are more than 40 demand data. Meanwhile the demand data occurring time can be recorded with the form of month, day, hour, minute. The calculating way can be intervals or slipping. For the slipping way, the slipping time can be set as 1, 2, 3 , 5 minutes The demand cycles can be set as 5, 10,15,30,60 minutes.

(5) Rate and period: It has 4 rates (sharp, peak, flat, valley), 10 periods, 4 sets of period tables, 10 time zones, 24 public holidays, 200 special holidays. The rate periods can be set strictly according to the customers requirement.

(6) Instantaneous value indicating function

(a)    Measure A, B,C three-phase voltage, current and phase at real time;

(b)   Measure A, B, C three-phase active/reactive power direction and instantaneous active / reactive power at real time;

(c)    Measure the grids frequency at real time.

(d)   Measure the apparent power and A, B, C each phase apparent power at real time.

(e)    Measure the general powers factor and A, B, C three phase powers factor at real time.

(f)     Measure the active harmonic wave power and the harmonic wave content at real time.

(7) Load curve recording function: It can record the selected content data at the time interval set by the user in the rolling way. 7 kinds of time interval data (1, 5, 10, 15,20,30,60 minutes) can be set .The data items can be selected:

(a). Active positive and reverse general power

(b) Reactive quadrant general power

© Voltage (ABC) current (ABC) power factor (ABC general) Frequency(A)

(D) Periodic average power of the active demand.

(e). Active instantaneous power (ABC general)

(f). Reactive instantaneous power (ABC general)

(g). The phase of the three-phase

The 7 sets of the data can be interval at the same or different times. Some of the items or all the items can be the recording content. There are 4 bytes at each record in the form of month, day, hour, minute.

(8 )   The event recording function. The event types to be recorded are as follows:

(a). System restoration record;

(b). Meter cover opening and closing record;

©. Maximum demand zero-clearing record.

(d). Programming time, the type of the last 10 times programming and its time;

(e). Power off record.

(f). Over-voltage record

(g).Under-voltage record;

(h)No-voltage record;

(i).Phase loss record;

(j) Current unbalance record;

The relavent even and its occuring time can be recorded together in the meters savings.

(9)   Clock battery: Powered by 1 long-life Lithium battery for the clocks power cut-off protection.The lithium battery stocking life >=30 years. Continuous power off,the maintenance times >=6 years.

(10)   LCD  backlighting display: The backlighting can be turned on by pressing any key. Under normal power supply, it can last for 3 minutes. When powered off, it can last for 1 minute. (It works seperately with battery, without any effect on the clocks lithium battery.)

(11)   Communication function: Infrared radiation or RS485 communication function. All the information in the meter can be read through computer or RS485 communication device.

Main Technical Parameter

Item	Model	Rated Voltage (V)	Rated Current (A)	Accuracy			Connection
				Active	Reactive
Three-Phase Four-line Multi-function Energy Meter	DTSD256	3*57.7/100V	1.5(6), 3(6)	1.0	2.0		Mutual induction
		3*220/380V	1.5(6),3(6)	1.0	2.0			Mutual induction
			5(20), 10(40), 15(60), 20(80), 30(100)	1.0	2.0			Direct
Three-Phase Three-line Multi-function Energy Meter	DSSD256	3*100	1.5(6), 3(6)	1.0	2.0		Mutual induction
		3*380	1.5(6), 3(6)	1.0		2.0	Mutual induction
			5(20), 10(40), 15(60), 20(80), 30(100)	1.0		2.0	Direct