Jianhu JH Series Dielectric Breakdown Tester
| Brand | Jianhu |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Instrument Manufacturer |
| Country of Origin | China |
| Model | JH Series Dielectric Breakdown Tester |
| Price Range | USD 700 – 7,000 (FOB Shanghai) |
Overview
The Jianhu JH Series Dielectric Breakdown Tester is an ASTM D149-22 and IEC 60243-1 compliant high-voltage testing system engineered for precise determination of the dielectric strength of solid insulating materials under AC, DC, or impulse voltage conditions. Designed for laboratories engaged in electrical insulation qualification, polymer R&D, and quality assurance of cable sheaths, transformer oils, laminates, and thin-film dielectrics, this instrument operates on the principle of controlled voltage ramping until electrical breakdown occurs—defined as the sudden, irreversible loss of insulating resistance across a test specimen. The system integrates a digitally regulated high-voltage generator (up to 100 kV, configurable), real-time current monitoring (1 µA–20 mA range), and arc detection circuitry with sub-millisecond response time to ensure measurement integrity and operator safety. Its architecture adheres to Class I protection standards per IEC 61010-1, featuring dual interlock systems, grounded shielded test chambers, and automatic voltage discharge sequencing.
Key Features
- High-precision voltage control with ≤0.5% full-scale accuracy across 0.1–100 kV range (AC/DC selectable)
- Programmable voltage ramp rates (0.1–5.0 kV/s) and hold times, supporting step-stress and short-time test methods per ASTM D149
- Integrated microprocessor-based controller with 7-inch capacitive touchscreen interface and intuitive menu navigation
- Auto-zeroing current sensing circuitry with 1 µA resolution and real-time overcurrent cutoff (adjustable threshold)
- Modular HV transformer and rectifier assembly enabling field-replaceable components without recalibration
- Compliance-ready test logging: timestamped voltage/current waveforms, breakdown event capture, and pass/fail flagging per test sequence
Sample Compatibility & Compliance
The JH Series accommodates standard ASTM D149 specimen geometries—including disk (25–100 mm diameter), rectangular strip (50 × 50 mm), and electrode configurations per IEC 60243-1 (spherical, cylindrical, and needle-plane electrodes). It supports liquid dielectric testing using ASTM D877-compliant oil cups (optional accessory). All test protocols are traceable to national metrology institutes via factory calibration certificates (NIST-traceable HV reference standards). The instrument meets electromagnetic compatibility (EMC) requirements per EN 61326-1 and safety certification per GB/T 16927.1–2011 (equivalent to IEC 60060-1). Data audit trails comply with GLP and ISO/IEC 17025 documentation requirements, including user login authentication and electronic signature support.
Software & Data Management
Jianhu’s proprietary TestMaster™ software (Windows 10/11 compatible) provides comprehensive data acquisition, visualization, and reporting. It enables multi-channel synchronization for comparative studies (e.g., temperature-dependent breakdown vs. humidity-controlled environments when integrated with optional environmental chambers). Raw waveform data is exportable in CSV, MATLAB (.mat), and PDF report formats. The software includes built-in statistical analysis tools—Weibull distribution fitting, mean breakdown voltage calculation with 95% confidence intervals, and outlier detection per ASTM E178. For regulated environments, optional 21 CFR Part 11 compliance modules provide role-based access control, electronic signatures, and immutable audit logs with tamper-evident hashing.
Applications
- Qualification of polymeric insulation materials (e.g., polyethylene, epoxy resins, silicone rubber) in power cable and capacitor manufacturing
- R&D validation of nanocomposite dielectrics and high-k ceramic substrates for semiconductor packaging
- Quality control of printed circuit board (PCB) laminates and conformal coatings per IPC-TM-650 2.6.3
- Accelerated aging studies correlating breakdown voltage degradation with thermal cycling (ASTM D3642) or UV exposure
- Testing of aerospace-grade composites per SAE AMS3675 and MIL-STD-202 Method 302
- Academic research in high-voltage engineering labs requiring reproducible, standards-aligned failure characterization
FAQ
What voltage ranges does the JH Series support?
Standard configuration covers 0.1–50 kV AC/DC; extended-range models (JH-100) support up to 100 kV with optional oil-immersed HV transformer.
Is the instrument suitable for testing liquid dielectrics like transformer oil?
Yes—when equipped with the ASTM D877-compliant oil test cell (accessory kit JH-OIL-1), including electrode cleaning protocol and moisture control features.
Does the system meet international regulatory requirements for lab accreditation?
Yes—it ships with ISO/IEC 17025-aligned calibration documentation, NIST-traceable certificates, and optional 21 CFR Part 11 software modules for FDA-regulated facilities.
Can test parameters be automated for batch processing?
Absolutely—the TestMaster™ software supports script-based test sequences, auto-load/unload triggers (via PLC interface), and scheduled execution with email notification upon completion.
What maintenance is required to sustain measurement accuracy?
Annual verification against certified HV reference standards is recommended; internal self-diagnostic routines run at power-on and validate sensor linearity, grounding integrity, and arc detection latency.
