Guance DRD-1000KV Computer-Controlled Electrical Weak Point Tester
| Brand | Guance Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | DRD-1000KV |
| Price | USD 2,650 (FOB Beijing) |
Overview
The Guance DRD-1000KV Computer-Controlled Electrical Weak Point Tester is a precision high-voltage diagnostic instrument engineered for quantitative assessment of localized dielectric weaknesses in thin polymeric insulating films. Operating on the principle of controlled DC voltage ramping under standardized electrostatic stress conditions, the system identifies and locates micro-defects—such as pinholes, gel particles, contaminants, or thickness irregularities—that manifest as premature breakdown events during voltage application. Designed in strict compliance with GB/T 13542.2–2009 and IEC 60674-2:1988, this tester delivers traceable, repeatable measurement of electrical weak points per square meter (WPs/m²), a critical quality metric for manufacturers of capacitor-grade polypropylene (PP), polyester (PET), polyimide (PI), and polyurethane (PU) films used in energy storage, power electronics, and aerospace insulation systems.
Key Features
- Full computer-controlled DC voltage ramping from 0 to 1000 kV, with programmable ramp rates (e.g., 0.5–5 kV/s) and upper voltage limit setting
- Motorized film unwinding and rewinding mechanism with adjustable linear speed (0.1–2.0 m/min), ensuring uniform electrode contact and consistent test geometry
- Real-time acquisition of breakdown voltage (kV), leakage current (µA), and spatial coordinates of each weak point via synchronized encoder feedback
- Integrated high-stability high-voltage transformer and precision autotransformer assembly, engineered for low ripple (<±0.5%) and minimal transient overshoot
- Automated post-test calculation of weak point density (WPs/m²), weak line count (linear defects spanning >5 mm), and statistical summary (mean, standard deviation, max/min)
- Self-calibrating measurement circuitry with 16-bit ADC resolution and noise-immune signal conditioning for reliable sub-microamp current detection
- Floor-standing ergonomic chassis with safety interlocks, emergency stop, and grounded HV shielding compliant with IEC 61010-1 Class I requirements
Sample Compatibility & Compliance
The DRD-1000KV accommodates roll-form dielectric films with widths up to 600 mm and thicknesses ranging from 2 µm to 250 µm. Compatible substrates include biaxially oriented polypropylene (BOPP), metallized PET, fluorinated ethylene propylene (FEP), and solvent-cast polyurethane membranes. All test protocols adhere to the electrode configuration, environmental conditioning (23°C ±2°C, 50% RH ±5%), and pass/fail criteria defined in GB/T 13542.2–2009 and its harmonized international counterpart IEC 60674-2:1988. The system supports audit-ready documentation aligned with GLP and ISO/IEC 17025 laboratory accreditation requirements, including full metadata logging (operator ID, sample ID, ambient conditions, calibration status).
Software & Data Management
The proprietary Windows-based control software provides intuitive workflow management—from test parameter definition and real-time oscillographic display (voltage vs. time, current vs. time) to georeferenced weak point mapping across film length. Raw data files are saved in CSV and XML formats with embedded timestamps, instrument serial numbers, and digital signatures. Audit trail functionality records all user actions, parameter changes, and calibration events in accordance with FDA 21 CFR Part 11 principles. Export modules support direct integration with LIMS platforms and statistical process control (SPC) dashboards via ODBC connectivity.
Applications
- Quality assurance of capacitor dielectric films for AC/DC filter, pulse, and EV inverter applications
- Routine lot acceptance testing per internal AQL protocols and customer technical specifications (e.g., TDK, KEMET, Nichicon)
- Root cause analysis of field failures linked to manufacturing anomalies (slit edge defects, coating non-uniformity, particulate contamination)
- Process validation of vacuum metallization, corona treatment, and slitting operations
- Research and development of next-generation nanocomposite polymer films with enhanced dielectric strength
FAQ
What standards does the DRD-1000KV comply with?
It fully implements GB/T 13542.2–2009 and IEC 60674-2:1988 for electrical weak point testing of plastic films.
Can the system test non-roll materials such as sheet samples?
No—the mechanical design is optimized exclusively for continuous web testing; discrete sheet testing requires alternative apparatus (e.g., ASTM D877-compliant slab testers).
Is the 1000 kV rating the maximum output or the test voltage range?
The unit delivers a continuously adjustable DC output from 0 to 1000 kV, with accuracy certified to ±1.5% of reading over the full range.
Does the software support multi-user access with role-based permissions?
Yes—administrator, operator, and reviewer accounts are configurable, with password protection and session logging enabled by default.
What maintenance intervals are recommended for the high-voltage transformer?
Annual dielectric oil analysis and visual inspection of bushings and grounding connections are advised; full calibration verification is required every 12 months or after 500 operational hours.
