Changchun Intelligent GJW-50E Voltage Breakdown Tester for Dielectric Strength Testing
| Brand | Changchun Intelligent |
|---|---|
| Origin | Jilin, China |
| Model | GJW-50E |
| Output Voltage | AC/DC 0–50 kV |
| Power Output | 3 kVA |
| Measurement Range | AC/DC 1–50 kV |
| Accuracy | ≤2% |
| Ramp Rate | 0.25–5 kV/s |
| Hold Time | 0–4 h |
| Leakage Current Setting | 1–30 mA |
| Dimensions (L×W×H) | 770×650×1050 mm |
| Weight | 100 kg |
| Input | AC 220 V ±10%, 50 Hz ±1% |
| Operating Environment | 15–30 °C, RH ≤85% |
| Grounding Depth Requirement | ≥1.5 m |
| Compliance | GB 1408.1–2006, GB 1408.2–2016, JJG 795–2016, ASTM D149, GB/T 1695–2005, GB/T 3333, GB 12913–2008 |
Overview
The Changchun Intelligent GJW-50E Voltage Breakdown Tester is an industrial-grade dielectric strength testing system engineered for precise and repeatable determination of electrical breakdown voltage and withstand performance of solid insulating materials under AC or DC high-voltage stress. Based on the fundamental principle of controlled voltage ramping until catastrophic insulation failure occurs—measured as instantaneous current surge—the instrument complies with internationally recognized test methodologies including ASTM D149, IEC 60243-1 (equivalent to GB 1408.1–2006), and GB 1408.2–2016 for DC-specific protocols. Designed for laboratory and quality control environments in R&D centers, cable manufacturing, polymer compounding, and capacitor paper production, the GJW-50E delivers stable 50 kV output with programmable ramp rates, real-time leakage current monitoring, and automated safety interlocks—ensuring both measurement integrity and operator protection during high-energy electrical testing.
Key Features
- Modular architecture with independent control unit, enabling rapid field maintenance and component-level serviceability without full-system downtime.
- Integrated automatic electrode alignment mechanism ensures consistent gap geometry (per ASTM D149 and GB/T 1695–2005 requirements), minimizing positional error and enhancing test reproducibility.
- Touchscreen HMI interface supports standalone operation; also compatible with PC-based control via USB 2.0 interface for remote command execution and parameter scripting.
- Dual-mode voltage generation: fully regulated AC (50 Hz) and DC outputs, each independently adjustable from 1 kV to 50 kV, with continuous power rating of 3 kVA.
- Real-time arc detection and overcurrent cutoff (<0.1 s response time) conforming to safety thresholds specified in GB 1408.1–2006 Clause 7.3 and IEC 61010-1.
- Onboard automatic discharge circuitry activates post-DC test completion, eliminating residual charge hazards before chamber access—verified by integrated discharge status indicator and audible alarm.
- Four-tier hardware safety interlock system: main power disconnect, earth leakage circuit breaker, zero-position confirmation switch on variac, and electromagnetic door sensor—each triggering immediate high-voltage shutdown.
- Embedded data acquisition module samples voltage, current, and time at ≥10 kHz, supporting dynamic curve plotting with zoom, overlay, and region-select analysis in software.
Sample Compatibility & Compliance
The GJW-50E accommodates a broad range of rigid and semi-rigid dielectric specimens per standardized electrode configurations (e.g., 25 mm and 75 mm diameter brass electrodes supplied). It is validated for use with thermoset resins, epoxy laminates, silicone rubber tubing, polyimide films, ceramic substrates, glass insulators, transformer board, and capacitor-grade paper—provided specimens meet minimum thickness requirements defined in GB/T 1695–2005 (≥0.5 mm) and ASTM D149 (≥1 mm for Class A tests). All operational parameters—including ramp rate, hold duration, and trip current threshold—are configurable to satisfy test plans aligned with ISO/IEC 17025-accredited laboratories. The system supports GLP-compliant audit trails when used with user-access-controlled software profiles and timestamped report generation.
Software & Data Management
The proprietary ZNDYTEST-2019 software suite provides full test lifecycle management: pre-test parameter definition (voltage mode, ramp slope, dwell time, pass/fail criteria), live waveform visualization, post-test curve annotation, and export-ready reporting. Data files are stored in binary+XML hybrid format ensuring version stability and long-term readability. Export options include CSV, Excel (.xlsx), and Word (.docx) templates customizable per client QA documentation standards. Role-based user accounts enforce parameter lockdowns—operators may execute predefined methods only, while administrators configure new test protocols and manage calibration logs. Audit trail functionality records all critical events (start/stop, parameter changes, fault triggers) with UTC timestamps and operator ID, satisfying FDA 21 CFR Part 11 electronic record requirements when deployed in regulated pharmaceutical or medical device manufacturing settings.
Applications
- Quality assurance of extruded polymer insulation for low- and medium-voltage power cables (per GB/T 3333 and IEC 60502).
- Evaluation of dielectric endurance in printed circuit board laminates and prepreg systems under accelerated aging conditions.
- Validation of varnish impregnation efficacy in motor winding insulation systems per IEEE Std 930.
- Comparative assessment of nanocomposite filler effects on breakdown strength in epoxy-silica systems.
- Batch release testing of capacitor dielectrics (e.g., metallized polypropylene film) against GB 12913–2008 specifications.
- Research into space charge accumulation dynamics using step-stress DC protocols compliant with IEC 60270.
FAQ
What standards does the GJW-50E support for dielectric testing?
It meets GB 1408.1–2006 (AC), GB 1408.2–2016 (DC), ASTM D149, GB/T 1695–2005, GB/T 3333, and GB 12913–2008, with traceable calibration paths to national metrology institutes.
Is the system suitable for continuous operation in production QA labs?
Yes—designed for 24/7 duty cycle with forced-air cooling, thermal overload protection, and self-diagnostic startup routines verified per IEC 60068-2 environmental stress screening.
How is electrode alignment ensured between tests?
A motorized micrometer-driven positioning stage automatically centers electrodes to ±0.05 mm repeatability, eliminating manual adjustment errors and ensuring compliance with ASTM D149 Section 6.3.
Can test reports be generated in multiple languages?
Report templates are editable in Microsoft Word; language localization is achieved via user-defined field labels and multilingual font embedding—no software recompilation required.
Does the system provide raw data export for third-party statistical analysis?
Yes—full-resolution voltage/current/time datasets are exportable as .csv with metadata headers, compatible with JMP, Minitab, Python pandas, and MATLAB signal processing toolboxes.
