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- Brand
- Analog Devices
- Model
- AN-679
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- Other Electronics
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- Electronics
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- 2
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- ZH · EN
- Last added
- 2022-09-16
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Analog Devices AN-679 Low-Cost Watt-Hour Meter Based on ADE7757 Application Note
This application note introduces a high-precision, low-cost, single-phase watt-hour meter design based on the ADE7757 integrated system. The design targets IEC 61036 Class 1 and Class 2 accuracy requirements for single-phase two-wire distribution systems and can be adjusted for specific regional standards like ANSI C12.16. The ADE7757 provides a complete solution including two ADCs, a reference circuit, and fixed DSP functions for calculating real power, along with an integrated stable oscillator. This manual is written in Chinese.
Read onlineAnalog Devices AN-679 specifications
| Accuracy Class | Class 1 and Class 2 |
|---|---|
| Dynamic Range | 400:1 |
| Basic Current (Ib) | 5 A |
| Maximum Current (IMAX) | 30 A |
| Meter Constant | 100 imp/kWh |
| Calibration Constant | 1600 imp/kWh |
| Shunt Resistance | 350 micro-ohms |
| Line Voltage | 220 V |
| Reference Circuit Temperature Coefficient | 30 ppm/°C (typical) |
Source: Analog Devices AN-679 Low-Cost Watt-Hour Meter Based on ADE7757 Application Note
All Analog Devices AN-679 documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What standards does this meter design target?
The design primarily targets IEC 61036 Class 1 and Class 2 accuracy requirements.
From: Analog Devices AN-679 Low-Cost Watt-Hour Meter Based on ADE7757 Application Note
How is the meter calibrated?
The meter is calibrated by attenuating the line voltage to 61.5 mV rms using a resistor divider network.
From: Analog Devices AN-679 Low-Cost Watt-Hour Meter Based on ADE7757 Application Note
What standard was used for the power meter design?
The design used the IEC 61036 standard for alternating current static watt-hour meters.
From: Analog Devices AN-679 ADE7757 Single-Phase Power Meter Application Note
What is the dynamic range of the meter?
The dynamic range performance of the meter has been extended to 400.
From: Analog Devices AN-679 ADE7757 Single-Phase Power Meter Application Note