Optical Port RS485 Token Sts Prepayment Meter Smart Prepaid Electric Meter

EM524021 is a 3-phase 4-wire STS compliant meter which also comply with DLMS/COSEM protocol.
It support IR, RS485,Plug-in and Play GPRS-2/3/4G communication. RF (Radio Frequency) communication
between MCU and IHD( in-home display). The main features are:
The Standard Transfer Specification (STS) describes a secure message system for carrying information between a point-of-sale
and a meter, and is currently finding wide application in electricity metering and payment systems. STS is not limited to this
application (see the section: Future enhancements), but because of the wide interest in this area, this document describes
the electricity application. STS is an international industry standard described in IEC62055-41, -51 and -52.
The STS prepayment solution is all about billing income security. It keeps track of the consumer's credit balance and ensures
that no power consumption can occur without having been paid for in advance.
 a latch status LED indicator

Standard
SANS 1524 -1: electricity payment system
IEC62052 - 11: Electricity metering equipment ,(AC) - General requirements, tests and test conditions Part 11: Metering equipment
IEC62053 - 21: Electricity metering equipment (a.c.) Part 21: Static meters for active energy (classes 1 and 2)
IEC62055 - 31: Electricity metering - Payment systems
Part 31: Particular requirements - Static payment meters for active energy (classes 1 and 2)
IEC62055 - 41:  Electricity metering - Payment systems
Part 41: Standard transfer specification
(STS) - Application layer protocol for one-way token carrier systems
IEC62056 - 21:  Electricity metering - Data exchange
for meter reading, tariff and load control,Part 21: Direct local data exchange
ISO 14001: Environmental Management Systems
ISO 9001:  Quality Management System

Type Test:
Tests to be conducted as per the relevant standards: IEC 62052-11; IEC 61000-4 etc. shall include but not limited to the following  

Type	EM524021 3P4W STS IR RS485 GPRS RF Suspension Meter with In-home Display
Ref. Voltage	3*230VAC
Ref.Current	10(100)A
Impulse Constant	800imp/kWh,800imp/kvarh
LCD Display	Backlight Display
Min. Starting Current	Class 1: 40mA Class 2: 50mA
Frequency Band	50Hz
Accuracy Class	Active Cl1.0, Reactive Cl2.0
Function	Multi-tariff, Max Demand, Load Control,Alarming
Ref. Standard	IEC62052-11,IEC62053-21,IEC62056-46, IEC62056-61,IEC62053-61
Anti-tamper	Top-cover Open, Terminal-cover Open, Communication Module Cover Open, Anti-magnetic field

              Cautions:
                   1.About AC/DC Energy Meter
                   (1) AC or DC- Generally speaking alternating current or direct current shall be the first factor.
                   (2) We also have DC meter when you need to measure the Direct Current.

                   2.About Function
                  (1) As the content is limited, all functions mentioned above are the main functions
                   (2) Other functions such as TOU, load control, friendly hours,RTC, plz refer to the technical specification or contact with our sales team.

                   3.About Application
                  (1) The applications only for examples, for the pratical situation the energy meter can also be used for other applications.
                  (2)  Welcome to inquiry if you are not sure about the functions or application, we have free technical support.