Precision Power Calibration: The ZX3030H Three-Phase Standard Source

In the realm of electrical power testing and calibration, the accuracy and versatility of a standard source are paramount. The ZX3030H DC/AC Three-Phase Standard Source represents a significant advancement, integrating comprehensive AC, DC, and analytical capabilities into a single, high-precision system. This article provides a technical overview of the ZX3030H, highlighting its key features and performance metrics in comparison to conventional calibration setups.

Integrated System vs. Discrete Instruments

Traditionally, calibrating a wide array of instruments—from basic panel meters to sophisticated transducers—often requires multiple, discrete pieces of equipment: a separate AC source, a DC source, and a reference standard meter. This approach can be time-consuming, prone to connection errors, and may introduce systemic uncertainties.

The ZX3030H consolidates these functions into a unified platform. It comprises a programmable three-phase AC standard source, a DC standard source, a three-phase sampling standard meter, and control/management software. This integration eliminates the need for external switching and complex setups for most common calibration tasks, ensuring higher overall measurement integrity and traceability from a single system.

Key Performance Features and Technical Analysis

1. High-Fidelity AC Output:
The ZX3030H's power amplifier operates from 40 Hz to 1 kHz, functioning as a constant-current source for current output and a constant-voltage source for voltage output. This provides excellent linearity and stability.

• Output Stability: ≤0.01%/60s, crucial for long-term stability tests.

• Low Distortion: Sine wave output distortion is ≤0.3%, ensuring pure waveforms for accurate testing of fundamental errors and minimizing the influence of inherent source harmonics on the device under test (DUT).

• Fine Resolution: Regulation fineness of 0.005% allows for precise setting of test points.

*Contrast with basic sources that may offer higher distortion (>1%) and poorer stability, which can mask the true performance of high-accuracy meters and transducers.*

2. Programmable Harmonic Generation:
A standout feature is the ability to generate complex waveforms with programmable 2nd to 31st harmonics. Users can control the harmonic count, order, amplitude (up to 50% of the fundamental's rated value), and phase relative to the fundamental wave (0–360°). This is essential for testing the performance of energy meters, power quality analyzers, and transducers under non-ideal, real-world grid conditions—a capability often absent in lower-tier standard sources.

3. Precision DC Output:
The integrated DC source covers wide voltage (100 mV to 1000 V) and current (10 µA to 30 A) ranges with an accuracy of 0.05%.

• Stability and Load Regulation: Key specifications include excellent stability (≤±0.01% RG/min), minimal error from ripple/noise (≤±0.01% RG), and negligible deviation from no-load to full-load (≤±0.01% RG). This performance rivals that of dedicated high-precision DC calibrators, making the ZX3030H a true all-in-one solution.

4. System Accuracy and Verification Capabilities:
The system is classified as a 0.05-class standard. Its allowable measurement errors are exceptionally low:

• Voltage/Current/Active Power: 0.05% (5V≤U≤1000V, 0.1A≤I≤100A)

• Active Energy: 0.05%

• Phase Angle: ±0.050°

• Power Factor: ±0.0002

This high level of accuracy allows the ZX3030H to be used not only for calibrating common industrial meters (0.5 class, 1.0 class) but also for verifying higher-grade devices. The integrated standard meter facilitates automatic comparison and data logging, streamlining the calibration process for wattmeters, varmeters, and phase meters.

Operational Flexibility

The system supports both fully automated testing via PC and manual control, providing flexibility for different laboratory workflows. The management software handles data analysis and report generation, which enhances productivity and reduces human error compared to purely manual calibration records.

Conclusion

The ZX3030H DC/AC Three-Phase Standard Source sets a high benchmark for calibration laboratories. Its integration of high-precision AC/DC sourcing, advanced harmonic generation, and a built-in reference meter into a single platform offers a more efficient, accurate, and comprehensive solution than assembling a suite of individual instruments. For technicians and engineers tasked with ensuring the accuracy of power measurement equipment, the ZX3030H provides the necessary tools to meet stringent calibration demands, from routine verification to complex influence quantity testing.

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/