Three Phase Prepaid Energy Meter

Three Phase Prepaid Energy Meter

Three-Phase Split Type STS Prepayment Energy Meter DTSY541SR Three Phase Split Type keypad meter is the prepayment meter according to IEC 62053-21 and IEC 62055-31/41/51. The data transmitting is according to Standard Transfer Specification (STS). The communication way between CIU and UIU can be...

Product Details

Three-Phase Split Type STS Prepayment Energy Meter

DTSY541SR Three Phase Split Type keypad meter is the prepayment meter according to IEC 62053-21 and IEC 62055-31/41/51. The data transmitting is according to Standard Transfer Specification (STS). The communication way between CIU and UIU can be M-Bus/PLC/RF wireless. And also it can be intergated into AMR/AMI system, for data/vending management.


Sub items


Basic parameter

Meter type

3P4W DT Meter

Active Accuracy

Class 1 (IEC 62053-21)


3x 230/380 V



Current range


Starting current




Power consumption

Current circuit power consumption≦1VA
     Voltage circuit power consumption≦2W/8VA

Operating Temperature


Limit Temperature


Storage Temperature

Up to 80℃



≤0.5Second/Day (23°C) , 10 years battery life.


Can  be change

LED and Display


1 Active pulse output
     1 Credit status indicate(two colors)
     1 Alarm indicate



Power off display

  LCD off after 20s,can be wake up by button

LCD contents

- Energy consumption
     - Total user credit to date
     - Meter status
     - Supply group code
     - Display maximum load occurrence
     - Display instantaneous current
     - Last 5 token entered
     - Display test


Terminal cover

BS standard

Protection class 

Indoor IP54

Lead sealing

Sealing screw


Meter cover: PC
     Meter cover: PC
     Terminal cover: 90% PC+10% fiberglass



1. Measurement

Import/Export active energy 
 Instantaneous value measurement
 --(current/voltage/Active power/Power Factor/Apparent power of each phase)

2. Anti-tamper Function

Meter Cover open detection and record
 Meter terminal open detection and record
 Reverse Phase sequence
 Current reverse detection
 Large magnetic effects
 By pass detection

3. Event record

Anti-tamper detection event
 Power on/off event
 Phase loss
 Battery removal

4. Demand&Billing function

kWh maximum demand and time stamp;
 12-Month Billing Data(optional)

5. Prepayment

Credit way--through UIU credit token/Mobile/Pos-vending/Online vending.
 Support Friendly credit/Emergency credit/Negative credit.
 Protocol Compatible to IEC62055-51, STS Standard.

6. Communication 

Local: Optical interface/1 RS485 or PLC;
 Meter to CIU(downline): PLC or M-bus communication;
 Meter to Concentrator(Upline): GPRS/PLC/RF wireless communication.
 Protocol compatible to (Local)IEC62056-21 and (Remote)DLMS HDLC or IEC62056-21;

7. AMI Function

Meter Data Management System;
 STS Vending System

Company information:

We Hangzhou LAISON technology Co. Ltd. is located in Hangzhou China.The main import and export business focus on water meter,gas meter,energy meter and meter test equipment

LAISON technology was established in 2012.It is a high  integrated high tech enterprise with the research,production,sales and service as a whole.

LAISON technology continues to improve Quality System Management.All the meters are manufactured in compliace with international standard,which ensure the legitimacy and quality of products staility.

With the mission of "customer first,qualiy first,reputation first,service first''.LAISON technology attaches great importance to the technology innovation and the improvement of quality systemad provide warmhearted service to satify customers.


1.Your company is a manufacturer or a foreign trade company?

We are a manufacturer in the past to undertake design and processing of all types of electronic 

products of OEM and ODM to provide production severice and technical support for major and 

medium-sized enterprises. With high-tech enterprise of energy measurement product,setting 

research and development ,design manufacture and service. 

2.Why choose us?

We are a factory manufacturing water meter,gas meter ,energy meter and meter test equipment,best production capability ,best quality control, best service and we can design new product togehter.100% QC inspection before shippment.We help our partners to build factory and supply spare parts.



Q1: How about your delivery time?

A: Generally, it will take 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order. 

Q2: What is your term of packing?

A: For the small capacity, it use carton, but for big capacity, we should use strong wooden case for protection. 

Q3: Can I have a sample for testing?

A: Yes, we can offer free sample, but you should afford the shipping cost. 

Q4: Can you produce according to the samples?

A: Yes, we can produce by your samples or technical drawings. We can build the molds. 

Q5: Do you test all your goods before delivery?

A: Yes, we have 100% test before delivery,we will send photos and video to you 

Q6: How can I get the after-service?

A: We will send you the free spare parts if the problems caused by us. If the products cannot be repaired, we will send you new free quantity together with next order. 

Please don't be hesitate to contact us for any questions,We provide 24 hours whole day online service, your inquiry will be on our priority attention and fastest reply!


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