Jianhu JH Series Dielectric Strength Tester for Insulating Materials
| [Brand | Jianhu |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Manufacture | China |
| Model | JH Series Dielectric Strength Tester |
| Price Range | USD 850 – 8,500] |
Overview
The Jianhu JH Series Dielectric Strength Tester is an engineered solution for standardized measurement of dielectric breakdown voltage in solid insulating materials—designed in strict accordance with IEC 60243-1, ASTM D149, GB/T 1408.1, and ISO 2507-2. It operates on the principle of controlled voltage ramping (AC or DC) across a defined electrode configuration, monitoring current leakage and detecting instantaneous insulation failure via rapid voltage collapse and arc-current threshold triggering. The system delivers repeatable, traceable results under both short-time (step-up) and slow-rate-of-rise test protocols, supporting compliance-driven workflows in R&D labs, quality control departments, and third-party certification laboratories. Its core architecture integrates high-voltage isolation transformers, precision current-sensing shunts, and microsecond-level arc detection circuitry to ensure metrological integrity during high-stress electrical testing.
Key Features
- High-voltage output range: configurable up to 100 kV AC/DC (model-dependent), with programmable ramp rates from 0.1 to 5.0 kV/s
- Dual-mode operation: supports both AC (50/60 Hz) and DC polarity testing with automatic polarity reversal
- Real-time current monitoring: resolution ≤ 1 µA, with overcurrent cutoff at user-defined thresholds (1–50 mA)
- Electrode compatibility: standardizes with ASTM D149-compliant brass sphere-to-sphere (Φ25 mm) and sphere-to-plane configurations; optional needle-plane and toroidal electrodes available
- Integrated safety interlocks: door-mounted microswitches, emergency stop circuitry, and grounded shield enclosure meeting IEC 61010-1 Class II requirements
- Compact footprint: ≤ 0.8 m² floor space, weighing < 85 kg—optimized for benchtop deployment in ISO 17025-accredited labs
- EMI-hardened design: multi-layer mu-metal shielding, filtered power input, and differential signal conditioning to maintain ±0.5% measurement stability in industrial environments (EN 61326-1 compliant)
Sample Compatibility & Compliance
The JH Series accommodates rigid and semi-rigid dielectrics including epoxy resins, polyimide films, silicone rubber sheets, ceramic substrates, and laminated composites. Specimen thickness range: 0.1 mm to 12 mm (with optional thickness compensation algorithms). All test sequences adhere to GLP/GMP documentation standards, with audit-ready test logs—including timestamped voltage curves, breakdown event coordinates, and operator ID tagging. The system supports calibration traceability to national metrology institutes (e.g., NIM, NIST, PTB) and includes built-in verification routines per ISO/IEC 17025 Clause 6.5. Full compliance with FDA 21 CFR Part 11 is enabled via optional electronic signature modules and encrypted data storage.
Software & Data Management
Jianhu’s proprietary TestMaster™ software (v4.2+) provides intuitive test setup, real-time waveform visualization (voltage vs. time, current vs. time), and automated report generation in PDF/XLSX formats. Data export conforms to ASTM E1447 and ISO 10012-1 metadata standards, embedding calibration certificates, environmental conditions (temperature/humidity logged via integrated sensors), and uncertainty budgets. Audit trails record all parameter modifications, user logins, and report exports with SHA-256 hashing. Optional cloud synchronization enables remote monitoring and centralized fleet management across multi-site QA operations.
Applications
- Qualification of insulating coatings for aerospace wiring harnesses (per SAE AS4373)
- Batch release testing of transformer oil-impregnated paper (IEC 60156)
- Development validation of battery separator membranes (Li-ion, solid-state)
- Comparative analysis of nanocomposite dielectrics for high-frequency PCB substrates
- Failure mode analysis in medical device encapsulants (ISO 10993-1)
- Supporting UL 746C, EN 60695-2-11, and MIL-STD-202G Method 302 test execution
FAQ
What voltage accuracy specifications does the JH Series meet?
The system achieves ±1.0% full-scale voltage accuracy at 23 ± 2 °C, verified annually per ISO/IEC 17025 using calibrated HV dividers traceable to NIM.
Can the tester accommodate non-standard electrode geometries?
Yes—custom electrode fixtures may be designed and validated under Jianhu’s Engineering Support Program (ESP), subject to mechanical and electrical safety review.
Is firmware update capability included?
Firmware updates are delivered quarterly via secure USB dongle or authenticated web portal, with version-controlled rollback functionality.
Does the system support automated pass/fail decision logic?
Yes—user-defined criteria (e.g., “fail if breakdown occurs below 35 kV within first 60 s”) trigger immediate test termination and digital flagging in the result database.
What maintenance intervals are recommended?
Preventive maintenance is scheduled every 12 months or after 500 test cycles, including HV bushing inspection, grounding resistance verification ( 10 GΩ at 1 kV DC).
