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Revolutionizing Field Testing: The ZXHQ-B+ CT/PT Analyzer Raises the Bar
For Power System Protection & Metering Technicians
Accurate instrument transformer (CT & PT) testing is the bedrock of reliable power system protection, metering, and control. While traditional methods often involve cumbersome setups, multiple instruments, and manual calculations, the ZXHQ-B+ CT/PT Analyzer emerges as a definitive leap forward, integrating cutting-edge technology and user-centric design into a single, powerful, and remarkably portable solution.
Beyond the Limitations of Legacy Approaches
Traditional CT/PT testing typically requires:
Multiple Instruments: Separate devices for excitation (V-I), ratio/polarity, winding resistance, and burden testing.
Manual Calculations & Interpretation: Determining knee point, ALF, FS, 10% error curves, Ts, Kr, and inductance often involves complex plotting and calculation post-test, prone to human error.
Limited Standards Coverage: Manually applying different standards (IEC 60044, GB1208, GB16847, IEEE C57.13) can be inconsistent.
Field Impracticality: Older comprehensive test sets were often heavy (>20-30kg), complex, and AC mains-dependent, hindering efficient field use.
Data Management Challenges: Paper-based records or limited device storage complicate traceability and reporting.
The ZXHQ-B+: Integrated Powerhouse Performance
Engineered from deep theoretical study and extensive customer feedback, the ZXHQ-B+ shatters these limitations through its core strengths:
Unmatched Comprehensiveness:
CTs (Including TP Class): Excitation (V-I), Ratio, Polarity, Winding Resistance, Secondary Burden, Ratio Error, Phase Error.
PTs (VTs): Excitation (Electromagnetic Unit), Ratio, Polarity, Winding Resistance, Ratio Error, Phase Error.
Automatic Parameter Derivation: Instantly calculates and displays Knee Point (Vk, Ik), 10% Error Curve, ALF, FS, Ts, Kr, Saturated/Unsaturated Inductance – eliminating hours of manual work.
Intelligent Standards Compliance: Automatically selects and performs tests according to IEC 60044, GB1208 (-1), GB16847 (IEC 60044-6), and more, based on the transformer type and class, ensuring consistent, standards-conforming results.
Advanced Low-Frequency Testing: This sophisticated method enables accurate testing of CTs with exceptionally high knee-point voltages, up to 60kV, overcoming limitations of conventional approaches used in simpler analyzers.
Benchmark Accuracy & Range: Powered by high-performance DSP and ARM processors with advanced manufacturing, it delivers:
Voltage Measurement: ±0.2% (0~180Vrms)
CT/PT Ratio: ±0.1% (1~40000)
Phase Error: ±0.5 min (±2 min range)
Winding Resistance: 0.2% ±2mΩ (0~300Ω)
Burden: 0.2% ±0.02VA (0~1000VA)
Uncompromised Portability: Weighing under 10kg (365x290x153mm), it's significantly lighter than traditional high-capability test sets and many competing analyzers, making it genuinely practical for daily field deployment and work at height.
Streamlined Workflow & Efficiency:
One-Click Testing: Perform critical CT tests (Resistance, Excitation, Ratio, Polarity) with a single button press.
User-Friendly Interface: Clear, intuitive all-English graphical interface simplifies operation.
Robust Data Handling: Stores 1000 test results (retained during power loss). Easily transfer data via USB to PC for in-depth analysis and automated generation of professional Word reports.
ZXHQ-B+ vs. Traditional Methods & Typical Analyzers
Feature | Traditional Methods | Typical Mid-Range Analyzers | ZXHQ-B+ CT/PT Analyzer |
Test Scope | Multiple Instruments Needed | Often CT-focused or Limited PT | Full CT (incl. TP) & PT Coverage |
Parameter Calculation | Manual Plotting/Calculation | Limited Automation (e.g., Vk only) | Fully Automatic (Vk, ALF, FS, Kr, Ts, L, 10% Curve) |
Standards Application | Manual Selection/Interpretation | Manual Selection | Automatic Selection by Type/Class |
High Knee-Point Testing | Limited by Method/Equipment | Often Limited (< 30kV equiv.) | Advanced LF Method (Up to 60kV) |
Portability (Weight) | Very Heavy (20-40kg Systems) | Moderate (12-20kg) | < 10kg |
Workflow Efficiency | Slow, Multi-step Process | Improved but Often Multi-step | One-Click Key CT Tests |
Data Management | Paper/Spreadsheets/Limited Device | Moderate Onboard Storage | 1000 Results, USB Export, Word Reports |
Accuracy (Typical) | Varies (Often ±0.5% or worse) | ±0.3% - ±0.5% | ±0.1% (Ratio), ±0.2% (V/R/B) |
Conclusion: The Field Testing Standard Redefined
The ZXHQ-B+ CT/PT Analyzer isn't just an incremental improvement; it represents a paradigm shift for technicians. By seamlessly integrating the functionality of multiple instruments, automating complex calculations and standards compliance, leveraging advanced low-frequency testing for high-voltage CTs, and packaging it all into a rugged, sub-10kg unit, it delivers unparalleled efficiency, accuracy, and reliability in the field. Its ability to store and export data directly into report formats streamlines documentation and analysis. For power utilities, testing service providers, and protection engineers demanding the highest level of performance, productivity, and convenience in instrument transformer commissioning and maintenance, the ZXHQ-B+ establishes itself as the new benchmark. It transforms complex testing procedures into streamlined, accurate, and truly portable operations, ensuring the integrity of the critical measurement and protection foundation of the power grid.
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/
