Rozsah pou\u017eitia<\/h3>\n\n\n\n
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.<\/p>\n\n\n\n
Podmienky slu\u017eby<\/h3>\n\n\n\n
The installation altitude must not exceed 1,000 m.<\/p>\n\n\n\n
Ambient air temperature: -5\u00b0C to +40\u00b0C; relative humidity at 20\u00b0C must not exceed 85%.<\/p>\n\n\n\n
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.<\/p>\n\n\n\n
The unit must be installed in locations free from severe vibration and mechanical shock to ensure structural integrity.<\/p>\n\n\n\n
Ur\u010den\u00e9 na vn\u00fatorn\u00fa in\u0161tal\u00e1ciu; kompatibiln\u00e9 s ve\u013ekoform\u00e1tov\u00fdmi mont\u00e1\u017enymi syst\u00e9mami zbern\u00edc.<\/p>\n\n\n\n
Funkcie produktu<\/h3>\n\n\n\n
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.<\/p>\n\n\n\n
Electromagnetic shielding: Available with an integrated shielding structure that effectively reduces electromagnetic interference and ensures stable electrical signal transmission.<\/p>\n\n\n\n
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.<\/p>\n\n\n\n
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.<\/p>\n\n\n\n
Effective temperature rise control: Under continuous rated-current operating conditions, the temperature rise at the output terminal does not exceed 65\u00b0C, ensuring operational safety and preventing faults caused by excessive heat.<\/p>\n\n\n\n
Ease of installation: Standardized mounting dimensions compatible with conventional 24kV withdrawable switchgear, facilitating on-site installation and replacement.<\/p>\n\n\n\n
Corrosion and oxidation resistance: The epoxy resin material offers excellent resistance to corrosion and oxidation, suitable for a variety of complex electrical environments.<\/p>\n\n\n\n
Vynikaj\u00faci povrch: Hladk\u00fd povrch bez otrepov pre pohodln\u00fa in\u0161tal\u00e1ciu, s dobr\u00fdmi vlastnos\u0165ami spoma\u013euj\u00facimi horenie a odolnos\u0165ou proti opotrebeniu.<\/p>\n\n\n\n
Technick\u00e9 parametre<\/h3>\n\n\n\nParameter<\/th> \u0160pecifik\u00e1cia<\/th><\/tr><\/thead> Menovit\u00e9 nap\u00e4tie<\/td> 24 kV<\/td><\/tr> Menovit\u00fd pr\u00fad<\/td> 3,150 A \u2013 4,000 A<\/td><\/tr> Nap\u00e4\u0165ov\u00e1 odolnos\u0165 vo\u010di sie\u0165ovej frekvencii<\/td> 55 kV \/ 1 min<\/td><\/tr> Impulzn\u00e1 odolnos\u0165 vo\u010di prep\u00e4tiu<\/td> 125 kV<\/td><\/tr> Teplota skeln\u00e9ho p\u0159echodu<\/td> \u2265 105\u00b0C<\/td><\/tr> Prechodov\u00fd odpor<\/td> 520 mm<\/td><\/tr> Rozte\u010d mont\u00e1\u017enych bodov<\/td> 206 mm<\/td><\/tr> Limit rastu teploty<\/td> N\u00e1rast teploty na svork\u00e1ch nepresahuj\u00faci 65 \u00b0C pri menovitom pr\u00fade<\/td><\/tr> Materi\u00e1l<\/td> Puzdro z epoxidovej \u017eivice + kontakty zo zliatiny medi + tienen\u00e1 kon\u0161trukcia<\/td><\/tr> Ochrann\u00e9 hodnotenie<\/td> IP67<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n![\"CH3-24kV-250-3150-4000A-Kontaktn\u00ed](\"https:\/\/yieou.com\/wp-content\/uploads\/2026\/01\/CH3-24kV-250-3150-4000A-Contact-Box-for-Withdrawable-Center-mounted-Switchgear-Optional-Shielding.png\")
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| Parameter<\/th> | \u0160pecifik\u00e1cia<\/th><\/tr><\/thead> |
|---|---|
| Menovit\u00e9 nap\u00e4tie<\/td> | 24 kV<\/td><\/tr> |
| Menovit\u00fd pr\u00fad<\/td> | 3,150 A \u2013 4,000 A<\/td><\/tr> |
| Nap\u00e4\u0165ov\u00e1 odolnos\u0165 vo\u010di sie\u0165ovej frekvencii<\/td> | 55 kV \/ 1 min<\/td><\/tr> |
| Impulzn\u00e1 odolnos\u0165 vo\u010di prep\u00e4tiu<\/td> | 125 kV<\/td><\/tr> |
| Teplota skeln\u00e9ho p\u0159echodu<\/td> | \u2265 105\u00b0C<\/td><\/tr> |
| Prechodov\u00fd odpor<\/td> | 520 mm<\/td><\/tr> |
| Rozte\u010d mont\u00e1\u017enych bodov<\/td> | 206 mm<\/td><\/tr> |
| Limit rastu teploty<\/td> | N\u00e1rast teploty na svork\u00e1ch nepresahuj\u00faci 65 \u00b0C pri menovitom pr\u00fade<\/td><\/tr> |
| Materi\u00e1l<\/td> | Puzdro z epoxidovej \u017eivice + kontakty zo zliatiny medi + tienen\u00e1 kon\u0161trukcia<\/td><\/tr> |
| Ochrann\u00e9 hodnotenie<\/td> | IP67<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<\/figure>\n\n\n <\/p>\n |