Solid Insulation Material Test Electrodes
LQCL2826 Solid Insulation Material Test Electrodes
Professional three-electrode system designed for accurate measurement of dielectric properties in solid insulation materials at power frequency (50/60Hz). Compliant with IEC 60250, ASTM D150, and IEEE standards for laboratory and industrial applications.
Key Applications
Dielectric constant (ε) measurement of:
Insulation varnishes and resins
Composite materials (GFRP, CFRP)
Cable insulation materials
Mica-based products
Dissipation factor (tgδ) testing per IEC 60250
Quality control of polymer films
Technical Specifications
| Parameter | Specification |
|---|---|
| Electrode Structure | Three-electrode guarded system |
| Measuring Electrode Diameter | Ø70±0.1mm |
| Electrode Gap Adjustment | 0-3.5mm (0.02mm resolution) |
| Base Accuracy (no load) | tgδ <5×10-5 |
| System Capacitance | 40±1pF |
| Maximum Test Voltage | 2500V AC |
| Test Frequency | 50/60Hz ±0.5% |
Design Features
Precision Measurement System
Mirror-finished stainless steel electrodes (Ra 0.4μm)
Spring-loaded parallel plate mechanism
Integrated micrometer with 0.02mm resolution
Environmental Controls
Optimized for 20±5°C operation
65±5% RH operating range
Grounding terminal for noise reduction
Compliance Standards
The LQCL2826 meets the requirements of:
IEC 60250 (1969) - Recommended methods for dielectric measurements
ASTM D150-18 - Standard test methods for AC loss characteristics
IEEE 286-2000 - Recommended practice for measuring tgδ of stator insulation
Typical Test Materials
| Material Class | Sample Preparation |
|---|---|
| Insulating Varnishes | Cured films 0.2-3mm thickness |
| Laminated Composites | Cut to Ø100mm disks |
| Ceramic Insulators | Polished parallel surfaces |
Note: For accurate results, condition all samples at 23±2°C and 50±5% RH for 24 hours prior to testing.
