 DDZY1218GJ){kind=small}
Overview
Key Features
Employs a dedicated metering chip characterized by high quality, high precision, high sensitivity, high stability, a wide measurement range, and low power consumption.
The voltage sampling circuit utilizes a resistive voltage-division method.
The current sampling circuit utilizes high-quality, high-precision, high-stability, and wide-range manganese-copper shunts or current transformers.
Features a reliable LCD display offering a wide viewing angle, high contrast, and UV resistance.
Incorporates digital signal processing technology and Surface Mount Technology (SMT).
Features a robust structure that is flame-retardant, resistant to aging, and offers excellent sealing performance. The meter casing features standardized, compact dimensions; it is aesthetically pleasing, exquisitely crafted, and designed for convenient installation.
Working Principle
During operation, the voltage and current signals within the energy meter are sampled by respective sampling circuits, then fed into a dedicated energy metering integrated circuit for processing; subsequently, they are converted into digital signals and transmitted to a microprocessor for calculation. In the diagram, the microprocessor is responsible for time-of-use billing and for processing various input and output data. By acquiring energy pulses from the dedicated metering IC, it performs time-of-use active energy measurement; furthermore, it displays various data parameters as required, facilitates data transmission via infrared or RS485 interfaces, and records and stores a variety of operational data.
Specification
|
Model |
Accuracy |
Connection Type |
Voltage Rating (V) |
Current Rating (A) |
Constant (imp/kWh) |
|
DDZY1218 |
Active: Class 1; Reactive: Class 2 |
Direct Connection |
220V |
5(60) |
1200 |
Technical Specifications
|
Parameter |
Technical Requirements |
|
Operating Voltage Range |
Specified Operating Range: 80% Un – 110% Un Extended Operating Range: 70% Un – 120% Un
|
|
Voltage Circuit Power Consumption |
≤ 1.0 W and 3 VA (Non-communication mode) |
|
≤ 3 W (Communication mode) | |
|
Current Circuit Power Consumption |
≤1VA |
|
Clock Accuracy (23°C) |
≤0.5s/d |
|
Operating Temperature |
Specified Operating Range: -25°C – 60°C Extreme Operating Range: -40°C – 70°C |
|
Relative Humidity |
≤ 85% (Non-condensing) |
|
Frequency Range |
（50±2）Hz |
|
Dimensions |
124*168*58（mm） |
Functional Description
Metering Functions
Capable of metering forward and reverse active energy, and storing the corresponding data.
Measurement and Monitoring
Capable of measuring, recording, and displaying the current energy meter's operational parameters, such as voltage, current, power, and power factor. The measurement error (reference error) shall not exceed ±1%.
Display Functions
Rotational Display:Displays the total active energy, active energy consumption for peak-to-valley periods (Tip, Peak, Flat, and Valley), date, time, voltage, current, power, and power factor at 5-second intervals.
|
No. |
Display Item |
Data Display Format |
|
1 |
Current Combination Total Active Energy |
XXXXXX.XX |
|
2 |
Current Combination Active Energy (Peak) |
XXXXXX.XX |
|
3 |
Current Combination Active Energy (High) |
XXXXXX.XX |
|
4 |
Current Combination Active Energy (Flat) |
XXXXXX.XX |
|
5 |
Current Combination Active Energy (Off-Peak) |
XXXXXX.XX |
|
6 |
Date |
XX.XX.XX |
|
7 |
Time |
XX：XX：XX |
|
8 |
Voltage |
XXX.XX |
|
9 |
Current |
XX.XX |
|
10 |
Power |
XXXX.XXXX |
|
11 |
Power Factor |
X.XX |
Key Display:
By pressing the keys, the following parameters can be displayed: total active energy; active energy for the Tip, Peak, Flat, and Valley periods; the lower 8 digits of the meter number; the upper 4 digits of the meter number; date; time; voltage; current; power; and power factor.
|
No. |
Display Item |
Data Display Format |
|
1 |
Current Combined Total Active Energy |
XXXXXX.XX |
|
2 |
Current Combined Active Energy (Peak-of-Peak) |
XXXXXX.XX |
|
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