Yuelian PW-50KV Fully Computer-Controlled Voltage Breakdown Tester

Overview

The Yuelian PW-50KV Fully Computer-Controlled Voltage Breakdown Tester is an industrial-grade dielectric strength testing system engineered for precise determination of electrical breakdown voltage and withstand voltage performance of solid insulating materials under alternating current (AC) or direct current (DC) stress. Operating on the principle of controlled voltage ramping until insulation failure—detected via sudden current surge or voltage collapse—the instrument complies with core test methodologies defined in ASTM D149, IEC 60243-1, GB/T 1408.1, and ISO 60243. Designed for laboratories conducting quality control, R&D validation, and material certification, the system integrates Siemens PLC-based real-time control architecture with optical-isolated data acquisition to ensure electromagnetic immunity during high-voltage transients. Its dual-mode operation supports standardized short-time breakdown tests, stepwise gradient tests, and extended-duration dielectric withstand evaluations—enabling comprehensive assessment of insulation integrity across polymers, elastomers, laminates, ceramics, glass, varnishes, and molded components.

Key Features

• Full PC-based Windows software interface with intuitive GUI, real-time graphical display of voltage ramp curves and leakage current dynamics
• Siemens S7-series PLC core controller with digital I/O modules for deterministic timing and fault-safe interlocks
• Optically isolated communication path between PC and high-voltage subsystem, eliminating ground-loop interference
• Programmable ramp rate from 0.1 kV/s to 5 kV/s with linear or stepwise (gradient) profiles; automatic stop-on-breakdown with dual-trigger logic (voltage drop + current threshold)
• Dual protection architecture: overvoltage, overcurrent, short-circuit, and earth-leakage monitoring with hardware-level cutoff
• Integrated motorized voltage regulator with mechanical zero-return and upper-limit hard stops for repeatable positioning
• High-voltage generator with custom-wound transformer and EMI-suppressed output stage, rated for continuous 50 kV AC/DC output
• Modular test chamber featuring tempered glass observation window (550 × 600 mm), internal LED illumination, forced-air exhaust, and multi-color status tower lamp
• Automated post-test discharge circuit with programmable discharge delay and residual voltage verification
• Optional high-temperature test configuration (up to 150 °C) with thermal shielding and insulated electrode actuation

Sample Compatibility & Compliance

The PW-50KV accommodates flat-sheet specimens (e.g., films, laminates, PCB substrates), molded parts, and bulk insulators per standard electrode geometries—including 25 mm and 75 mm diameter disc electrodes (IEC 60243-compliant). Optional custom electrodes support non-standard geometries and edge-effect studies. Testing media include ambient air, silicone oil (ASTM D877/D1816), and elevated-temperature oil baths. All operational parameters—including ramp rate, hold time, polarity, and pass/fail criteria—are configurable to align with ASTM D149 Method A (short-time), Method B (step-by-step), or Method C (slow-rate); IEC 60243-1 Clause 8 (AC) and Clause 9 (DC); and GB/T 1408.1 Annex A. The system’s hardware and firmware design supports GLP-compliant audit trails when paired with validated software configurations meeting FDA 21 CFR Part 11 requirements for electronic records and signatures.

Software & Data Management

The native Windows application provides full lifecycle test management: parameter definition (voltage mode, ramp profile, dwell time, electrode type), real-time visualization of voltage vs. time and leakage current vs. time, and synchronized event logging. Test results—including breakdown voltage (kV), time-to-failure (s), peak leakage current (mA), and pass/fail status—are stored in a structured local database with timestamp, operator ID, and environmental metadata. Export functions support CSV and Excel-compatible .xlsx formats for statistical analysis in external tools (e.g., JMP, Minitab). Report templates are user-editable; PDF generation includes embedded test curves, raw data tables, and compliance annotations. Software enforces role-based access control, change history logging, and electronic signature capture for regulated environments. Firmware updates and calibration logs are version-tracked within the application.

Applications

This tester serves critical functions across multiple sectors: polymer compounders validating dielectric formulations; cable manufacturers qualifying jacketing and insulation layers; capacitor and transformer OEMs verifying impregnation quality; aerospace composites labs assessing lightning strike resistance; and academic research groups studying aging mechanisms in nanocomposite dielectrics. It supports comparative screening of material batches, qualification of new resin systems, evaluation of moisture absorption effects, and accelerated life testing under combined thermal–electrical stress. In production QA, it enables 100% incoming inspection of insulating spacers, bushings, and encapsulated modules prior to final assembly.

FAQ

What standards does the PW-50KV comply with?

It supports test execution per ASTM D149, IEC 60243-1, GB/T 1408.1, and ISO 60243, with software-configurable protocols matching each standard’s procedural requirements.

Can the system perform both AC and DC breakdown tests?

Yes—dual-mode high-voltage source delivers sinusoidal 50 Hz AC or stabilized DC up to 50 kV, with independent polarity and grounding configuration options.

Is automated electrode positioning available?

Standard configuration uses manual placement; motorized vertical electrode actuation is offered as a factory-installed option for high-throughput labs.

How is electrical safety ensured during operation?

Hardware-enforced interlocks disable HV output if the test chamber door is open, grounding rods are disengaged, or cabinet access panels are removed; all safety circuits meet IEC 61010-1 CAT III requirements.

What maintenance is required for long-term accuracy?

Annual verification of voltage sensor linearity and current transducer calibration is recommended; full traceable calibration certificates are available through authorized service centers.