Beijing Guangjing BDJC-50KV AC/DC Dielectric Breakdown Tester

Overview

The Beijing Guangjing BDJC-50KV AC/DC Dielectric Breakdown Tester is an industrial-grade high-voltage testing system engineered for precise determination of dielectric strength and voltage withstand capability of solid insulating materials under power-frequency (50 Hz) or direct current conditions. Based on the principle of controlled voltage ramping until electrical breakdown occurs—defined as the point at which insulation resistance collapses and conduction current surges—the instrument quantifies the maximum electric field a material can sustain before failure. Designed in strict alignment with international test standards—including ASTM D149, IEC 60243-1, and multiple Chinese national standards (GB/T series)—this tester delivers repeatable, traceable, and auditable results essential for quality assurance in R&D labs, QC departments, and certification bodies. Its dual-mode (AC/DC) output, microprocessor-controlled ramp logic, and real-time current monitoring enable rigorous evaluation of polymers, elastomers, ceramics, laminates, varnishes, and composite dielectrics used in aerospace, automotive, energy transmission, and electronics manufacturing.

Key Features

• True dual-mode operation: independent AC (0–50 kV, 50 Hz) and DC (0–50 kV) high-voltage outputs with seamless mode switching and identical voltage accuracy (≤1% of full scale).
• Precision programmable rise rates: six selectable linear ramp speeds (100, 200, 500, 1000, 2000, and 5000 V/s), fully configurable via software to meet specific standard requirements or internal test protocols.
• Intelligent digital voltage regulation: solid-state, contactless voltage control eliminates mechanical variac wear, ensuring long-term stability and zero waveform distortion during AC tests.
• Sub-50 ms safety cutoff: high-sensitivity overcurrent detection circuit interrupts power within ≤0.05 seconds upon breakdown, minimizing arc damage and preserving electrode integrity.
• Comprehensive protection architecture: hardware-enforced safeguards include overvoltage lockout, short-circuit current limiting, ground-fault leakage detection, interlocked test chamber door switch, emergency high-voltage disconnect, and software-level misoperation validation.
• Integrated data acquisition: real-time sampling of both voltage and leakage current (0.1 mA resolution) enables dynamic curve plotting, peak current capture, and post-test analysis of pre-breakdown conduction behavior.

Sample Compatibility & Compliance

The BDJC-50KV accommodates standardized electrode configurations per GB/T 1408.1–2016 (equivalent to IEC 60243-1), including brass disk electrodes (25 mm and 50 mm diameters), needle-plane, and rod-plane geometries. Test specimens may be evaluated in ambient air or immersed in ASTM D877-compliant insulating oil (e.g., mineral oil with dielectric strength ≥30 kV/2.5 mm). The system supports all three fundamental test modes: short-time dielectric strength (uniform ramp), step-stress endurance (incremental hold-and-rise), and constant-voltage withstand (duration-based pass/fail verification). It meets full regulatory expectations for GLP and GMP environments through audit-ready test logs, electronic signature support, and optional 21 CFR Part 11–compliant software modules. Calibration traceability is provided via NIM (National Institute of Metrology, China)-certified documentation or customer-designated accredited laboratories.

Software & Data Management

Control and analysis are executed via proprietary Windows-based software with intuitive GUI, multi-user role management, and password-protected configuration access. Each test session automatically records timestamped voltage/current waveforms, breakdown values, ramp parameters, environmental metadata (operator ID, sample ID, lab temperature/humidity), and operator annotations. Data exports to CSV, Excel, or PDF formats preserve full numerical fidelity and graphical context. Curve overlay functionality allows comparative analysis across batches or formulations; statistical summaries (mean, SD, Weibull distribution fitting) support reliability modeling. All raw data files are immutable once generated, with optional write-once storage policies and electronic audit trails compliant with ISO/IEC 17025 documentation requirements.

Applications

This tester serves critical functions across material development and production validation workflows: qualification of polymer films for capacitor dielectrics; screening of epoxy encapsulants for power semiconductor modules; verification of ceramic substrate insulation in EV battery management systems; assessment of silicone rubber housing integrity for outdoor insulators; and compliance testing of aerospace-grade composites per MIL-STD-461 and RTCA DO-160 sections. It is routinely deployed by Tier-1 suppliers to OEMs in electric mobility, renewable energy inverters, medical imaging equipment, and high-voltage switchgear manufacturing.

FAQ

What standards does the BDJC-50KV comply with?
It fully satisfies GB/T 1408.1–2016, GB/T 1695–2005, ASTM D149–2022, and IEC 60243-1 for dielectric strength testing of solid insulating materials.
Can the system perform both AC and DC breakdown tests?
Yes—dual independent high-voltage generators support simultaneous AC (50 Hz, sinusoidal) and DC output up to 50 kV each, with independent calibration and safety interlocks.
Is calibration documentation included with shipment?
A factory-issued calibration certificate traceable to NIM (China) is supplied; third-party accreditation (e.g., A2LA, UKAS) can be arranged upon request.
How is operator safety ensured during high-voltage operation?
Five-layer physical protection includes grounded enclosure, door-actuated HV cutoff, redundant overcurrent relays, earth-leakage circuit breaker, and emergency stop with mechanical latch.
Does the software support automated reporting for ISO/IEC 17025 audits?
Yes—test reports include digital signatures, revision history, instrument ID, calibration expiry dates, and tamper-proof data archives compatible with laboratory information management systems (LIMS).