DDSY89 single-phase electronic prepaid energy meterDetailed product description：

The DDSY89 single-phase electronic prepaid energy meter uses imported single-phase energy metering chips and is manufactured using SMT meter mounting and wave soldering processes; The product has the characteristics of anti-theft, high precision, high reliability, high overload, low power consumption, small size, and light weight; It can be widely used for measuring single-phase AC active energy in urban and rural residents, factories, enterprises, commercial areas, etc., to achieve prepaid electricity purchase function.

DDSY89 single-phase electronic prepaid energy meter features:
1. Full electronic single-phase active energy metering
2. Automatic anti-theft of electricity, reverse active power is included in forward active power
3. Wide range, high precision, long lifespan, calibration free, maintenance free
4. Prepaid IC card for electricity, with built-in high-power magnetic holding relay to control power on and off
5. Equipped with sound and light alarm function, low battery level 2 alarm prompts for purchasing electricity
6. Automatic power-off and delayed restoration of power supply can be set when overloaded
7. Triple data backup, data saved for ten years without loss after power outage
8. The large screen LED displays both accumulated and remaining battery levels clearly and intuitively
9. Optional multi rate function
10. One table, one card, can choose logical encryption card and RF card, safe and reliable

Technical parameters:
1. Standard: GB/T17215-2002 (IEC61036:2000, IDT)
GB/T18460-2001 DL/T645-1997
2. Accuracy level: Level 1, Level 2
3. Reference voltage: 220V
4. Current specifications: 5 (20), 10 (40), 5 (30) A, 5 (40) A
5. Reference frequency: 50Hz/60Hz
6. Working voltage: 0.8Un~1.2Un Extreme working voltage: 0.7 Un~1.9 Un
7. Working temperature: -25 ℃~+55 ℃ Extreme working temperature: -35 ℃~+65 ℃
8. Power consumption: Voltage circuit ≤ 1W, 5VA current circuit ≤ 1VA (1b)
9. Lifespan: ≥ 20 years
10. Pulse output: Optoelectronic isolated passive output, pulse width of 80mS ± 5mS
11. Communication protocol: DL/T645-1997, provincial and municipal protocols or customized according to user requirements
12. Dimensions: LED display 165 × 114 × 66mm (length × width × height)