Beijing North Guang BDJC-10kV Dielectric Breakdown Tester for Tape and Solid Insulating Materials

Overview

The Beijing North Guang BDJC-10kV Dielectric Breakdown Tester is a precision high-voltage testing system engineered for the quantitative evaluation of dielectric strength and voltage withstand capability in solid insulating materials. It operates on the principle of controlled voltage ramping—either AC or DC—to induce electrical breakdown across a standardized electrode gap, enabling measurement of the critical electric field intensity (kV/mm) at which insulation failure occurs. Designed in strict accordance with national and international standards—including GB 1408.1–2006 (equivalent to IEC 60243-1), GB 1408.2–2006 (DC-specific requirements), and ASTM D149—the instrument delivers traceable, repeatable results essential for QC laboratories, R&D departments, and third-party calibration facilities. Its architecture integrates a high-stability oil-immersed high-voltage transformer, digitally regulated voltage control, real-time A/D conversion, and fully automated discharge management to ensure operator safety and measurement integrity under rigorous industrial test conditions.

Key Features

• Modular high-voltage generation system with oil-filled transformer and precision autotransformer for stable output up to 10 kV AC/DC
• Seven selectable voltage ramp rates (0.1–3.0 kV/s) supporting both linear and stepwise breakdown protocols
• Triple-mode operation: continuous ramp-up, discrete step-up, and timed withstand testing (0–6 hours)
• Integrated safety discharge unit with automatic alarm activation upon chamber door opening post-DC test
• Nine-layer hardware-based safety interlock system including overpressure cutoff, door-activated shutdown, independent grounding, short-circuit protection, and leakage current monitoring (1–30 mA threshold)
• Real-time overcurrent interruption (<0.1 s response) preventing thermal damage to samples and electrodes
• Embedded microcontroller and PC-based control interface enabling full automation, data logging, and remote parameter configuration

Sample Compatibility & Compliance

The BDJC-10kV is validated for use with rigid and semi-rigid dielectric solids commonly employed in electrical insulation applications—including pressure-sensitive adhesive tapes, vulcanized rubber sheets, impregnated fiberboards, mica laminates, thermoplastic films, ceramic substrates, and glass insulators. Electrode configurations conform to standard geometries defined in GB/T 1695–2005 and ASTM D149 (e.g., 25 mm diameter disc electrodes with 2 mm gap). The system satisfies metrological traceability requirements outlined in JJG 795–2004 (Verification Regulation for Withstanding Voltage Testers), ensuring suitability for laboratory accreditation under ISO/IEC 17025. All electrical safety circuits are independently certified per GB 4793.1 (IEC 61010-1), and software audit trails support GLP-compliant documentation practices.

Software & Data Management

The proprietary Windows-based test software provides comprehensive control, visualization, and reporting functionality without reliance on third-party platforms. During testing, dynamic Lissajous-style voltage–time and current–time curves are rendered in real time with multi-color overlay capability and scalable zoom for localized analysis. All raw acquisition data—including timestamped voltage, current, ramp rate, and event flags—are stored in encrypted binary format with optional CSV export. The software supports user-level access control: operators may define personalized test templates, parameter sets, and report layouts; administrative privileges restrict unauthorized modification. Test reports comply with internal QA requirements and external regulatory submissions, exporting directly to Microsoft Word and Excel for further editing. Full audit trail logging—including user login history, parameter changes, and pass/fail determinations—is maintained in alignment with FDA 21 CFR Part 11 principles for electronic records.

Applications

This tester serves as a core qualification tool in quality assurance workflows for manufacturers of electrical tapes, cable jacketing compounds, transformer board, capacitor dielectrics, and printed circuit board substrates. It enables routine verification of batch-to-batch consistency in dielectric performance, supports material selection studies during product development, and facilitates root-cause analysis of insulation failures in field-rejected components. In academic and government labs, it supports fundamental research into polymer aging mechanisms, humidity-dependent breakdown behavior, and surface tracking resistance. Its compliance with ASTM D149 and GB/T 3333 makes it suitable for certification testing of cable paper and other cellulose-based insulators used in power transmission infrastructure.

FAQ

What standards does the BDJC-10kV comply with for calibration and verification?

It conforms to JJG 795–2004 (national verification regulation for withstand voltage testers), GB 1408.1–2006 and GB 1408.2–2006 (electrical strength testing methods), and ASTM D149 (dielectric breakdown of solid insulating materials).

Can the system perform both AC and DC breakdown tests?

Yes—it delivers adjustable AC (50 Hz) and DC outputs up to 10 kV, with independent ramp control and safety logic optimized for each mode.

Is the software compatible with modern Windows operating systems?

The application supports Windows 10 and Windows 11 (64-bit), with drivers digitally signed for seamless installation and execution.

How is electrical safety ensured during DC testing?

A dedicated auto-discharge circuit discharges residual energy within 2 seconds after test completion, and an audible/visual alarm prevents chamber access until safe potential is confirmed.

Does the instrument support unattended long-duration withstand tests?

Yes—continuous operation for up to 6 hours is supported, with automatic shutdown triggered by overcurrent, overvoltage, or thermal overload events.