DTY79-S/DSSY79-S electronic three-phase prepaid energy meterDetailed product description：

The DTY79-S series electronic three-phase four wire prepaid energy meter is a new generation product developed and researched by our company, which has multiple functions such as energy metering, load control, and user information management. This product is based on microcontroller technology and utilizes well-known foreign measurement specific chips, IC card technology, and SMT technology. Data is reliably transmitted between users and management systems through IC encryption cards, with one card per household. It has anti-theft functions and can be widely used in industrial and mining enterprises, residential property management, and urban and rural power grid renovation.

The DTY79-S/DSSY79-S electronic three-phase prepaid electricity meter has the advantages of small size, comprehensive functions, and high reliability. It is an ideal metering product for reforming electricity charging methods, effectively solving overdue electricity bills, realizing the commercialization of electricity, and effectively controlling and regulating grid loads.
The performance indicators of the product comply with the national standards GB/T 17215-2002 "Level 1 and Level 2 Static AC Active Energy Meters" and GB/T 18460.3-2001 "IC Card Prepaid Electricity Sales System Part 3: Prepaid Electricity Meters".

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. One LED light indicates the tripping status of the electricity meter, one LED light is used to indicate the phase loss status, and one LED light is used for alarm indication.
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 display method. When the remaining power is equal to the alarm power, the LED digital tube display stays on and emits an alarm signal sound to remind 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 parameters of DTY79-S/DSSY79-S electronic three-phase prepaid energy meter:
Rated voltage (V): 3 × 220/380
Working voltage range: 70% Un~120% Un
Rated current (A): 3 × 1.5 (6), 3 × 5 (20), 3 × 5 (30), 3 × 5 (40), 3 × 10 (40), 3 × 10 (60), 3 × 15 (60), 3 × 20 (80)
Rated frequency (Hz): 50
Accuracy level: Level 1, Level 2
Power consumption: Voltage circuit (per phase) ≤ 3W, 10VA; Current circuit (per phase) ≤ 1.5VA
Working temperature (℃): -25~+55, extreme working temperature (℃): -45~+70
Relative humidity: ≤ 75% (annual average)
Display range: 0-99999kWh
Data protection: Data retention time after power outage>10 years
Dimensions (mm):
Average service life (years):>10

Function:
Positive and negative active energy metering.
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.
Automatic power-off when overloaded (optional).
It has data write back function.
Can display remaining electrical energy and various other information.

Scope of application:
3 × 220/380V 3 × 1.5 (6) A is a transformer connected instrument, suitable for large industrial users who implement prepayment for three-phase three wire high-voltage power supply and low-voltage metering with a frequency of 50Hz (60Hz), as well as industrial and non industrial users who implement prepayment for three-phase four wire low-voltage power supply.
3 × 220/380V 3 × 5 (20) -3 × 20 (80) A is a direct access instrument suitable for industrial and non industrial users who implement prepaid three-phase four wire low-voltage power supply with a frequency of 50Hz (60Hz). It is also applicable to residential lighting meter cost tables that implement prepaid three-phase four wire low-voltage power supply due to high electricity consumption.