Les essais de contournement sec et humide exigent une source haute tension stable, une mesure fiable et une zone d’essai sûre.
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Faits techniques utilisés
- 250kV/100kVA AC test system covers 11kV to 66kV insulator levels.
- Available for electrical puncture voltage, dry/wet flashover and power frequency voltage tests.
- Single-phase 50Hz system with 1000:1 voltage turns ratio.
- Protective resistor rating: 250kV, 0.4A, 5kΩ.
- Capacitive voltage divider rating: 250kV AC, 300pF±2%.
Conseils de sélection
Pour les isolateurs 11kV à 66kV, précisez le matériau, la norme, les dimensions et les conditions d’essai. Le système 250kV/100kVA sert de référence de planification.
Le diviseur capacitif, la résistance de protection, l’arrosage et les interverrouillages doivent être inclus dès le début.
Liste de contrôle acheteur
- Voltage class range from 11kV to 66kV
- Glass, porcelain or polymer material
- Dry test only or dry and wet flashover
- Divider, resistor and control cabinet included
- Water spray and drainage requirement
- Safety fence, grounding and warning system
FAQ
Is a 250kV system always required for 66kV insulators?
Not always. The final voltage depends on the standard, product geometry and safety margin. A 250kV class system is a common planning reference for this range.
Can puncture and flashover tests share the same system?
They can share the high voltage source in many laboratories, but fixtures, protection and procedure details may differ.
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