DDSY7999 Single-phase Prepayment Watt-hour Meter HJTIS LCD Over-load Protection

PRODUCT BRIEF INTRODUCTION
The Single Phase STS Key-pad energy meter adopts the most advanced solid-state and integrated circuit technology featured in super low power loss and advanced SMT technology for measuring AC single-phase active power.The product complies with IEC 62053-21“Part21, The Special Requirements for Energy Measuring Equipment: Level 1and Level 2 of StaticAC Energy Meter”and other standards.Communication protocol adopts IEC 62056-21 standard. The 20-bit code in STS algorithm is in accordance with the related standards stipulated in IEC 62055 standard transmission specifications (STS).

FUNCTION FEATURES
Record the total currently consumed active positive energy, but the reversal energy is also to be added positively into total energy. No need of recalibration for long term.
The key pad consists of the numbers from 0 to 9 plus Enter and Exit keys. A 30 ms' waring tone will sound when a key is pressed.
Buzzer alarm, low-credit alarm.
Hoarding proof, Over-load protection.
Prepaid function. The user will get a bunch of 20-bit charging token from the power utility after they have purchased power from there. They need put the token into the meter by key pad.
Expandable infra red and RS 485 communication.
Clear and reliable LCD display.
Adopts photoelectric-isolation energy pulse to output signals, which can be used to detect errors. The emitting diode indicates the energy consuming status.

MAIN TECHNICAL DATA

Wenzhou Esperidin Import and Export Co., Ltd is a manufacturer specializing in the production of low and high voltage switchgear equipment , low-voltage circuit breaker series products, Integrates research and development, manufacturing, processing and trade departments together.

Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers.

We not only provide standard products, bust also develop and produce customized products based on specific customer requirement.

We promise your parcel will be packaged very well. Our carton is designed by professional supplier. Shock proof test and drop test passed.Inside the carton, we will sealing each parcel with adhesive tape to ensure safety delivery. For and damage caused by delivery, we will replace it for free.