DDSY738-1 single-phase prepaid energy meterDetailed product description：

Main functions and features

Active energy metering, no adjustment required for long-term operation
Prepaid IC card fees for electricity
When the remaining battery level is less than the first level alarm value (default value of 10 degrees), it will sound and light an alarm. When it is less than the second level alarm value (default value of 3 degrees), it will trigger a circuit breaker alarm (which can be restored after inserting an IC card), reminding the user to purchase electricity on time
Anti electricity theft
When the power value exceeds the set value, it will automatically power off and can be restored after inserting an IC card
One household, one card has good anti-counterfeiting properties, and when the IC is lost, it can be replaced with a new card
After the electricity meter is closed, the clearing card can be used to clear the information on the meter
Working temperature range (-30~65 ℃)
Detailed introduction:
Specifications and main technical parameters

Specification and model: DDSY738

Accuracy level: 1.0 level, 2.0 level

Reference voltage (V) 220

Reference current (A)
5 (20), 10 (40), 15 (60)

Meter constant (imp/kWh) 3200, 1600, 800
Main technical parameter items
Technical indicators, basic error
Complies with the requirements of GB/T18640-2001
Data retention time after power outage ≥ 10 years
Voltage circuit power consumption ≤ 1.0W 5VA
Current circuit power consumption ≤ 1VA (Ib)
Normal operating temperature: -20 to+45 ℃
Extreme working temperature: -30 to+55 ℃
Environmental humidity ≤ 85%
Dimensions: 158mm × 112mm × 56mm
Weight: Approximately 0.7kg