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High-Precision Three-Phase Meter Testing with ZXDN-306
The ZXDN-306 Three-Phase Multifunction Meter Test System represents a significant advancement in the verification of energy meters, developed in full compliance with national standards and building upon over a decade of expertise in programmable test equipment. Designed for calibrating single and three-phase energy meters up to class 0.2, including sinusoidal reactive meters, this system combines elegant design, robust functionality, and high performance.
Key Performance Features:
1.Modular Structure: Available in integrated or split configurations, featuring dedicated aluminum alloy meter mounting racks and fire-resistant composite work surfaces.
2.Advanced Signal Generation: Utilizes DDS technology with large-scale CPLD and RAM-embedded systems. It offers 36,000-phase adjustment points, 12-bit DAC waveform synthesis, and 16-bit DAC amplitude adjustment, ensuring high stability, fine resolution, and low distortion.
3.Dual Display System: A 7-inch color LCD provides extensive operational data, complemented by 6-digit LED displays at each meter position for showing basic error, clock frequency, and test status.
4.Efficient Connectivity: Features quick-connect aluminum terminal blocks for current circuits. Each position includes multi-path pulse input switching (4 pulse, 1 RS485, 1 multifunction) with protection against high-voltage misconnections.
5.Enhanced Diagnostics: Incorporates open-current circuit detection per table position (with optional automatic short-circuiting) and a dedicated费控 (fee control) testing module for local/remote control tests and relay verification.
6.High-Precision Timing: Equipped with the ZXT10 high-precision standard clock (3×10⁻⁸ stability) for clock error tests (ZXGT10 GPS synchronizer optional).
7.Parallel Communication: Independent RS485 ports per table position enable parallel communication (optional serial server supported).
8.Versatile Sampling: 3D-adjustable photoelectric samplers accommodate both mechanical (black mark) and electronic (flash) signals.
9.Reliable Power Amplification: PWM-modulated amplifiers offer high power output, low heat generation, and efficiency exceeding 90%, with comprehensive soft-start/shutdown and protection features (short-circuit/overload).
10.Optional Extensions: Includes a carrier wave switching box supporting 6 mainstream domestic power line carrier protocols.
Technical Specifications Comparison:
Parameter | Specification | Notes / Comparison |
Accuracy Class | 0.02, 0.03, 0.05, 0.1 | Offers higher precision tiers than many standard industrial test sets. |
Output Voltage | 57.7V, 100V, 220V, 380V | Standard ranges. Adjustable 0-120% with fine resolution (0.01%). |
Output Current | 5mA - 100A | Wide range, comparable to high-end systems. Adjustable 0-120% (0.01% res.). |
Output Power (e.g., 12 pos.) | V: 200VA; I: 600VA | Power capacity scales with table count, superior for parallel testing. |
Stability (%/120s) | 0.02 (for 0.02 class) | Excellent long-term stability ensures consistent calibration results. |
THD | ≤0.3% (for 0.02/0.03 class) | Lower distortion provides cleaner test signals versus many competitors. |
Frequency Range | 45 - 65 Hz | Standard range. Resolution: 0.01 Hz. |
Phase Shift | ±180.0° | Wide range. Fine resolution: 0.01°. |
Meter Positions | 3, 6, 12, 16, 20, 24, 32, 48 | Highly scalable, supporting small labs to high-volume production lines. |
Technical Advantages and Comparison:
The ZXDN-306 distinguishes itself through its exceptional signal purity (low THD), high resolution in amplitude, phase, and frequency adjustment, and robust parallel testing capabilities. Unlike simpler systems, its integrated fee control testing, carrier wave support, and open-circuit diagnostics make it uniquely suited for modern smart meters. The use of RAM-based embedded systems and PWM amplifiers offers greater reliability and efficiency compared to older generator technologies. The scalable power output and number of table positions provide flexibility that is often only available in more expensive, modular systems.
Conclusion:
The ZXDN-306 Three-Phase Multifunction Meter Test System is a comprehensive, high-accuracy solution designed for the rigorous demands of meter manufacturers, utilities, and calibration labs. Its blend of advanced technology, flexible configuration, and robust protective features positions it as a superior choice for the development, verification, and type testing of next-generation energy metering equipment.
GDZX is a manufacturer of power detection equipment, offering a diverse range of products with comprehensive models and providing professional technical support. Contact us at +86-27-6552607 or +86-17396104357.Website: http://en.gdzxdl.com/
