High Reliability
High reliability is achieved by long-term experience and accumulation of technology.
Selected High Quality Raw Material
High strength porcelain insulators require not only higher amount of alumina but also
- Management of mining site
- Sufficient technology of material analysis
- Strict incoming inspection - Use only selected material
- Fine and uniform distribution of particles
Optimum Design Engineering
- Straight head design with less stress concentration
- X-3s >= M&E rating with stable mechanical strength (X: average, s: standard deviation in M&E test)
- Light weight and compact design
M&E Test: Electromechanical failing load test as per IEC 60383-1
Distribution of Mechanical Strength in M&E Test
Advanced Manufacturing Technology
- Automated mass production system
- Uniform quality by continuous firing and production control
- Control of porcelain thermal expansion
- Forming without material damage
- Accurate assembling without stress concentration
Forming
Assembling
Strict Quality Control
In addition to ISO 9001 certified,
- Routine hydraulic pressure test developed by NGK - Effective elimination of manufacturing defects
- Total quality activities of preventive maintenance
Hydraulic Pressure Test
Principle
Test Situation
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