What Is Single-Phase Electronic Watt-hour Meter？
The DDS450 Series Single-Phase Electronic Watt-hour Meter adopts an ultra-large digital energy measurement chip and SMT technology, with key components selected from international industrial-grade brands to greatly improve reliability and service life. Featuring a graceful appearance, firm structure, good performance, and long service life, the DDS450L is suitable for measuring AC single-phase active energy at a reference frequency of 50Hz or 60Hz, with a built-in anti-electricity-theft function.
Working Conditions of the Single-Phase Electronic Watt-hour Meter
- Specified Working Temperature — -25°C to 55°C
- Utmost Working Temperature — -25°C to 60°C
- Relative Humidity — ≤85% (at environment temperature 23°C)
- Atmospheric Conditions — No harmful corrosive substances in the air
Parâmetros do produto
Product Specification
Main Technical Data of the Single-Phase Electronic Watt-hour Meter
Nota: Outros modelos com especificações especiais são fornecidos de acordo com os requisitos do utilizador
| Item | Especificação |
|---|---|
| Working Voltage | 0.9 Un – 1.1 Un |
| Power Consumption | Less than 2 W / 10 VA |
| Executive Standard | GB/T 17215.321-2008 |
| Temperature Performance | Error within accuracy range across -25°C to 55°C |
| Light-Load Performance | Fine accuracy class at ultra-light load |
| Overload Capability | Above 6 times within the accuracy class |
| Precisão da medição | High accuracy of actual online measuring, high reliability, long service life |
| Installation | Simple installation and operation, position independent |
| Transportation Resistance | No error change under normal transport; no adjustment needed after opening the box |
Why Choose ZHIMING's Single-Phase Electronic Watt-hour Meter?
Industrial-Grade Components with SMT Technology
The DDS450L Single-Phase Electronic Watt-hour Meter is built on an ultra-large digital energy measurement chip with key components selected from international industrial-grade brands. Combined with SMT manufacturing technology, this component strategy greatly improves reliability and extends service life, delivering stable and accurate metering in continuous residential and commercial service.
Built-In Anti-Electricity-Theft Protection
The Single-Phase Electronic Watt-hour Meter integrates a dedicated anti-electricity-theft function, helping utilities and landlords detect and prevent energy tampering and unauthorized usage. This protection reduces revenue loss from meter tampering while maintaining measurement integrity across the full operating range.
Wide Temperature Range with Stable Accuracy
The DDS450L maintains measurement error within the specified accuracy class across a working temperature range of -25°C to 55°C (utmost -25°C to 60°C). This wide temperature tolerance, combined with fine accuracy at ultra-light load, ensures reliable metering in both hot and cold climates without seasonal recalibration.
Strong Overload and Transportation Resistance
With an overload capability reaching above 6 times within the accuracy class, the meter withstands inrush and short-term current surges without accuracy drift. Its strong transportation resistance means no error change occurs under normal shipping conditions, and users require no adjustment after opening the box — enabling simple installation and immediate deployment.
FAQ
What is the DDS450L Single-Phase Electronic Watt-hour Meter used for?
The DDS450L is designed to measure AC single-phase active energy at a reference frequency of 50Hz or 60Hz. It is suitable for residential, commercial, and light industrial electricity metering where accurate single-phase energy measurement and anti-theft protection are required.
What is the working voltage range of the DDS450L?
The meter operates within a working voltage range of 0.9 Un to 1.1 Un (where Un is the rated voltage), with power consumption of less than 2W / 10VA. This wide voltage tolerance ensures stable operation under normal grid voltage fluctuations.
What is the overload capability of the DDS450L meter?
The DDS450L has a strong overload capability, with the overload ability reaching above 6 times the rated current while remaining within the accuracy class. This allows the meter to withstand short-term inrush currents from motor starts and other surge loads without measurement error.
What standard does the DDS450L comply with?
The DDS450L Single-Phase Electronic Watt-hour Meter complies with GB/T 17215.321-2008, the Chinese national standard for static watt-hour meters for active energy. This ensures the meter meets recognized accuracy and performance requirements for energy metering equipment.
Does the DDS450L require calibration after shipping?
No. The Single-Phase Electronic Watt-hour Meter features strong transportation resistance, meaning no error change occurs under various normal transportation conditions. Users do not need to adjust the meter after opening the box — it is ready for simple installation and immediate operation.
