English Product Name

Overview

The YueLian PW-JC50KV Computer-Controlled Dielectric Breakdown Tester is an engineered solution for determining the dielectric strength and breakdown voltage of solid and liquid insulating materials under power-frequency (50 Hz) alternating or direct voltage stress. Based on the fundamental principle of electrical insulation failure—where a rapid, irreversible conduction path forms across a dielectric under increasing electric field—the instrument applies precisely regulated high-voltage stress until catastrophic breakdown occurs. The system conforms to standardized test methodologies defined in IEC 60243-1 (equivalent to ASTM D149), GB 1408.1–2016, and other national and international specifications governing insulation performance evaluation. Designed for laboratory-based quality control, R&D validation, and compliance testing, it delivers repeatable, traceable, and auditable results essential for materials certification, product qualification, and regulatory submissions.

Key Features

• Siemens CPU-based central control unit ensures high-sampling-rate data acquisition with long-term stability and minimal drift.
• Wireless Bluetooth interface enables remote operation up to 15 m—eliminating operator proximity to high-voltage zones during test execution and enhancing personnel safety per IEC 61010-1 requirements.
• Dual-channel interference suppression circuitry mitigates transient current spikes at breakdown onset, preventing communication port damage and maintaining control integrity.
• C++-based real-time control firmware supports dual-threshold breakdown detection (simultaneous voltage collapse and current surge), improving decision reliability over single-parameter systems.
• Integrated arc containment grid and automatic pressure-relief mechanism suppress plasma expansion and reduce post-breakdown energy discharge hazards.
• Modular protection architecture includes replaceable fuses and earth-leakage circuit breakers—designed for rapid field maintenance without specialized tools.
• Unified platform supports both solid specimens (e.g., epoxy resins, laminated composites, ceramic substrates) and liquid media (e.g., transformer oil, silicone dielectric fluids), eliminating need for separate test rigs.

Sample Compatibility & Compliance

The PW-JC50KV accommodates standard electrode configurations per GB/T 1408.1 and ASTM D149—including disk, spherical, and needle-plane geometries—for thickness-controlled solid samples (0.1–10 mm) and ASTM D5125-compliant oil cups for liquid dielectrics. All test sequences adhere to GLP-aligned procedural controls: user authentication, audit-trail logging, timestamped result export, and parameter lockout during active tests. Full compliance documentation supports ISO/IEC 17025 laboratory accreditation and FDA 21 CFR Part 11 readiness when paired with validated software configuration.

Software & Data Management

The embedded Windows-compatible software provides intuitive graphical workflow navigation, preconfigured test templates (GB, ASTM, IEC), and automated report generation in PDF/CSV formats. Built-in self-diagnostic routines verify HV circuit continuity, grounding integrity, and sensor calibration status prior to each run. Real-time waveform capture (voltage vs. time, current vs. time) enables post-test root-cause analysis of pre-breakdown phenomena such as partial discharge inception or thermal runaway. All measurement data are stored with immutable metadata—including operator ID, environmental conditions (optional sensor input), and equipment calibration expiry—ensuring full traceability.

Applications

This tester serves critical roles across multiple sectors: QC labs evaluating batch consistency of insulating varnishes and potting compounds; transformer manufacturers validating dielectric fluid aging resistance; aerospace suppliers qualifying composite laminates for high-voltage avionics enclosures; and academic institutions conducting fundamental studies on electrical treeing mechanisms in polymers. Its dual-medium capability also supports comparative studies between solid-state and liquid-cooled insulation architectures in emerging power electronics applications.

FAQ

Does the system support both AC and DC breakdown testing?
Yes—programmable AC (50 Hz) and DC output modes are available, with independent ramp rate and hold-time settings.

Is calibration traceable to national standards?
All factory calibrations are performed using NIST-traceable high-voltage dividers and certified reference meters, with documented uncertainty budgets provided in the calibration certificate.

Can test parameters be locked to prevent unauthorized modification?
User-level access control allows administrators to restrict editing of voltage limits, ramp rates, and safety thresholds based on role permissions.

What electrode sets are included by default?
The base configuration includes brass disk electrodes (Φ25 mm, 2 mm gap) for solids and a standard ASTM D5125 oil cup with stainless steel electrodes for liquids.

Is remote firmware update supported?
Firmware upgrades are delivered via encrypted USB key with version-signed binaries; network-based updates are disabled by design to maintain cybersecurity integrity.