Prehľad produktu
CH3-24kV/250 3150-4000A výsuvný spínací skriňový kontaktný box (dostupné v tienenom prevedení) je vyrobené pomocou epoxidovej živice v procese liatia APG (Automatic Pressure Gelation). Je to izolačné pripojovacie zariadenie pre vysoké prúdy, navrhnuté výhradne pre výsuvné odpojiteľné zariadenia triedy 24 kV. switchgear. Jednotka sa primárne používa v 24kV výsuvných rozvádzačoch, poskytuje izolačné oddelenie, prechodové pripojenie a tienenie. Poskytuje účinnú izolačnú ochranu vnútorných kontaktov v rozvádzači, je vhodná pre energetické systémy vyžadujúce prenos extra veľkých prúdov a zabezpečuje bezpečnú a stabilnú prevádzku elektrických energetických systémov.
Rozsah použitia
This contact box is applicable to 24kV-class draw-out withdrawable switchgear and is commonly found in large-scale power distribution systems, industrial substations, distribution systems for large mining and industrial enterprises, large hydropower stations, power dispatch centers, and other electrical facilities requiring extra-large current transmission. It serves as an insulating protection and connection transition component for internal switchgear contacts, providing reliable insulation for the switching and isolation of high-voltage circuits. It meets the demands of extra-large current power transmission, and the shielded variant effectively reduces electromagnetic interference.
Podmienky služby
The installation altitude must not exceed 1,000 m.
Ambient air temperature: -5°C to +40°C; relative humidity at 20°C must not exceed 85%.
The installation site must be free of gases, vapors, dust, or other explosive and corrosive media that could severely impair the insulating performance of the contact box.
The unit must be installed in locations free from severe vibration and mechanical shock to ensure structural integrity.
Určené na vnútornú inštaláciu; kompatibilné s veľkoformátovými montážnymi systémami zberníc.
Funkcie produktu
Superior insulating performance: Formed using the epoxy resin APG process, the unit provides excellent insulation, effectively isolating high-voltage circuits, preventing leakage and short-circuit risks, and withstanding high-voltage impulse.
Electromagnetic shielding: Available with an integrated shielding structure that effectively reduces electromagnetic interference and ensures stable electrical signal transmission.
Extra-large current capacity: Rated current up to 4,000 A, meeting the extra-large current transmission requirements of large-scale power facilities while minimizing resistive heating losses.
Robust and durable construction: One-piece molded structure provides high mechanical strength, capable of withstanding both mechanical and electrical stress within the switchgear enclosure, resulting in a long service life.
Effective temperature rise control: Under continuous rated-current operating conditions, the temperature rise at the output terminal does not exceed 65°C, ensuring operational safety and preventing faults caused by excessive heat.
Ease of installation: Standardized mounting dimensions compatible with conventional 24kV withdrawable switchgear, facilitating on-site installation and replacement.
Corrosion and oxidation resistance: The epoxy resin material offers excellent resistance to corrosion and oxidation, suitable for a variety of complex electrical environments.
Vynikajúci povrch: Hladký povrch bez otrepov pre pohodlnú inštaláciu, s dobrými vlastnosťami spomaľujúcimi horenie a odolnosťou proti opotrebeniu.
Technické parametre
| Parameter | Špecifikácia |
|---|---|
| Menovité napätie | 24 kV |
| Menovitý prúd | 3,150 A – 4,000 A |
| Napäťová odolnosť voči sieťovej frekvencii | 55 kV / 1 min |
| Impulzná odolnosť voči prepätiu | 125 kV |
| Teplota skelného přechodu | ≥ 105°C |
| Prechodový odpor | 520 mm |
| Rozteč montážnych bodov | 206 mm |
| Limit rastu teploty | Nárast teploty na svorkách nepresahujúci 65 °C pri menovitom prúde |
| Materiál | Puzdro z epoxidovej živice + kontakty zo zliatiny medi + tienená konštrukcia |
| Ochranné hodnotenie | IP67 |
