single phase split prepaid meter

prepaid smart meter STS single phase energy meter single phase split meter

STS   Single Phase Split Prepaid Meter  

STS international approvals

20-digit encryption token realizing no card prepayment, high safety

Preventing electricity temper, not easy to be broken, high reliability

Flexible power-off ways, supporting power off for opening lid, overload, and owing expenses

Various alarm modes (low-power, overload)

Double lines relay control

STS meter adopts virtual media – 20-digit encryption token to execute power information exchange, realizing the function of prepaid. The basic principle is as follows:

(1) Users buy certain electricity quantity;

(2) Electricity sales system, according to purchased electricity quantity and meter No., generate a group of unique token;

(3) Users input the token into meter through the keyboard, thus completing recharging.

Encryption token has the following features:

(1) Associated with meter No., the token is effective only when being input into the certain meter, invalid when double input;

(2) Each recharge token is unique;

(3) The token has valid period; exceeding the period is invalid;

(4) Token, which is input into meter realizing recharge, is invalid when being input again.

Better than traditional prepayment meter

Compared with the traditional prepayment meter, STS prepayment meter has the following prominent advantages:

(1) Comply with international standard and versatility;

(2) Strong anti-interference ability; no open window for reading and writing, less vulnerable to be tempered;

(3) 20-digit encryption token, higher safety;

(4) Flexible electricity purchase ways: purchasing via business hall, internet, phone, etc;

(5) Longer lifespan.

Functions

(1)Energy Measurement

Measuring the total (positive and negative) active energy; accumulating negative energy into the positive energy.

(2)Prepayment function without card

Via the 20-digit encryption token to realize prepayment function without card, complying with STS and IEC standards.

(3)Parameter measurement

Support measurement of such parameters as voltage, current, power, etc.

(4)Maximum demand quantity measurement

Measure and record the maximum power of last month.

(5)Overload control

Real-time measurement of users’ load conditions; when exceeding the limited load, meter will send warning signs; if the load is still higher within a period of time, meter generates automatically power off.

(6)Preventing electricity-tempering

When the meter wiring is abnormal or has been damaged, meter generates automatically power off.

(7)Alarm

The meter alarm light will be lighted and buzzer is audible in following conditions: too little electricity, 0 electricity quantity, overload, abnormal wiring, and opening cover.

(8)Open cover for detection

With such functions as detecting whether opening the meter cover or the terminal cover, and whether disconnecting zero line; overload detection; current reverse testing; etc.

(9)Events recording

Record such events as power off, overload, opening cover, token input, etc.

(10)Display function

Display various data, such as the current electricity quantity, remaining electricity quantity, current, voltage, power, the maximum power of current month, table No., purchase information, etc.

Main parameters

Accuracy	Class 1
Rated Voltage	Un=220V
Voltage Range	0.7Un~1.2Un
Rated current	5(60) A
Displayer	LCD
Size	222mm*132mm*78mm
Temperature	Normal operating temperature: -10°C~+55°C Limit of operating temperature : -15°C~+70°C Storage and transport temperature:-25°C~+70°C
Humidity	≤95%

STS Identification: