DDY79-S electronic single-phase prepaid energy meterDetailed product description：

DDY79-S electronic single-phase prepaid energy meter

The DDY79-S electronic single-phase IC card prepaid energy meter is a new generation product developed by our factory with multiple functions such as energy metering, load control, and user information management. The electric energy metering part adopts our mature electronic energy meter technology, with a reasonable overall structure, advanced technology, and various advantages of electronic energy meters. In the design process, the meter fully considers the characteristics of online instruments and takes a series of measures to prevent power failure, overvoltage, reliability, and anti-interference ability, fully meeting electromagnetic compatibility requirements. The product's performance indicators comply with the national standards GB/T18460.3-2001 "IC Card Prepaid Electricity Sales System Part 3: Prepaid Electricity Meter" and GB/T17215-2002 "Level 1 and Level 2 Static AC Active Energy Meter".

This product has the advantages of small size, comprehensive functions, and high reliability. It is an ideal product for reforming the electricity system, realizing the commercialization of electricity, solving the difficulty of charging, and achieving electricity monitoring and regulating the load status of the power grid.

Structure:
The case is sealed, dust-proof and waterproof, flame retardant and anti-aging.
One red LED light indicates the power pulse, and the pulse light flashes once every time the meter accumulates one pulse equivalent of electrical energy.
The IC card socket for the electricity meter is located inside the small door and has self-protection function. When inserting the card, the small door opens.
One optocoupler isolated pulse output, with an output width of approximately 80ms, for verification purposes.
The power display adopts the LED digital tube method. When the remaining power is equal to the alarm power, the LED digital tube stays on, reminding users to purchase electricity in a timely manner.
Using IC card as the medium for power transmission. IC cards are encrypted, one card per household, and are not interchangeable.
Using ferroelectric memory, data storage is reliable.
Adopting a large capacity magnetic holding relay with low power consumption and high reliability.

Technical Specifications:
Rated voltage (V): 220
Working voltage range: 70% Un~120% Un
Rated current (A): 5 (20), 5 (30), 10 (40)
Rated frequency (Hz): 50
Accuracy level: Level 1, Level 2
Power consumption: Voltage circuit ≤ 2W, 10VA; Current circuit ≤ 1VA
Working temperature (℃): -25~+55, extreme working temperature (℃): -45~+70
Relative humidity: ≤ 75% (annual average)
Display range: 0-9999kWh
Data protection: Data retention time after power outage>10 years

Dimensions (mm):

Average service life (years):>10

Function:
Prepaid IC card for electricity, with decreasing electricity consumption.
Alarm for insufficient remaining power, when the remaining power is zero or reaches the set credit value, trip and cut off the power to remind users to purchase electricity in a timely manner.
Automatically cut off power when overloaded.
It has data write back function.
Can display remaining electrical energy and various other information

Scope of application:
220V 5 (20) A - ---10 (40) A is a direct access meter suitable for urban and rural residents in areas where prepaid electricity fees are implemented or will be implemented.