Tinjauan Produk
Ekstensi Bushing Terisolasi JY JCTGZ-15/200 15kV 200A merupakan alas aksesori kabel tipe sambungan yang dirancang khusus untuk sistem distribusi daya tegangan menengah 15kV (kelas 10kV). Dibangun dengan struktur isolasi komposit resin epoksi dan karet, alas ini menyediakan alas pemasangan yang diperpanjang untuk konektor kabel siku dan konektor bushing ujung tunggal/ganda, mengatasi masalah jarak antarmuka perangkat yang tidak memadai dan jarak pemasangan yang terbatas. Alat ini secara bersamaan menyediakan fungsi isolasi, koneksi konduktif, dan perlindungan, serta banyak digunakan pada unit gardu induk cincin, gardu induk kompak, kotak sambungan kabel, dan peralatan lainnya. Ini adalah komponen sambungan penting untuk membangun antarmuka yang dapat dipisahkan dalam sistem distribusi tegangan menengah.
Fitur Produk
Kinerja Listrik dan Isolasi
The main body is formed by epoxy resin casting combined with a rubber sealing structure, delivering excellent insulation performance. It withstands the rated voltage and short-duration overvoltages of a 15kV system, meeting the 17.5kV maximum operating voltage requirement of 10kV systems with adequate insulation margin.
An integrated electric field optimization structure uniformly distributes the electric field, effectively suppressing partial discharge. Long-term operation presents no risk of electrical erosion or breakdown; partial discharge level ≤10pC (at 1.5U₀).
The top-mounted copper terminal provides excellent conductivity with low contact resistance, capable of carrying a rated current of 200A with minimal heat generation during long-term operation, and offers strong anti-corrosion and anti-oxidation performance.
An integrated grounding connection structure enables reliable earthing, effectively dissipating fault currents and induced voltages to enhance system safety.
Fitur Struktural dan Keselamatan
The integrated composite structure design provides high outer insulation strength; the housing may be touched directly during operation without risk of electric shock, ensuring the safety of operations and maintenance personnel.
The extended-length structural design provides additional installation distance, resolving insufficient device interface clearance and accommodating installation-space-constrained scenarios with a compact form that requires no extra equipment space.
Standardized interface design: both ends are compatible with 15kV 200A class standard interfaces — one end connects to the equipment bushing and the other to the cable accessory — offering high versatility and convenient installation.
The integrated rubber sealing structure achieves an IP67 protection rating, providing sealed isolation between equipment and accessories to prevent ingress of moisture and dust, enhancing the system’s moisture-proof and waterproof performance.
Anti-mismatching and anti-loosening design: standardized interface dimensions ensure compatibility only with accessories of the corresponding specification, eliminating the risk of incorrect connections or loose disconnections.
Ketahanan Lingkungan dan Cuaca
Excellent weather resistance accommodates a wide operating temperature range of -40°C to +90°C; epoxy resin and rubber properties show no degradation at high or low temperatures with no risk of cracking or embrittlement, suitable for both outdoor and indoor applications.
Moisture-proof, waterproof, pollution-resistant, and salt-fog-resistant; capable of long-term stable operation in harsh environments including direct burial, high humidity, and dusty conditions, immune to rainwater and condensation corrosion.
Anti-aging, UV-resistant, and ozone-corrosion-resistant; service life exceeding 30 years with maintenance-free operation, reducing long-term operations and maintenance costs.
Fitur Mekanis dan Kompatibilitas
High mechanical strength with impact and vibration resistance; withstands mechanical stresses during transportation, installation, and operation with no risk of deformation or damage; seismic rating of Grade 8.
Kompatibel dengan antarmuka aksesori kabel standar kelas 15kV 200A; dapat dipertukarkan dengan konektor kabel siku spesifikasi yang sama, lonjakan penangkal, dan perangkat pembumian, menawarkan kompatibilitas yang kuat.
Compact structure with flexible installation; adaptable to the installation spaces of mainstream distribution equipment such as ring main units, compact substations, and cable junction boxes, meeting extended installation requirements.
Parameter Teknis
| Kategori Parameter | Barang | Spesifikasi Teknis |
| Parameter Listrik Terukur | Tegangan Sistem (Un) | 10kV |
| Tegangan Terukur (Ue) | 15kV | |
| Tegangan Operasi Maksimum (Um) | 17,5kV | |
| Arus Terukur (Ie) | 200A | |
| Frekuensi Terukur (fn) | 50Hz/60Hz | |
| Tegangan Tahan Frekuensi Daya | 42kV/5min (dry), 38kV/5min (wet), no breakdown, no flashover | |
| Tegangan Tahan Impuls Petir | 95kV (puncak), tidak ada *breakdown*, tidak ada *flashover* | |
| Tingkat Pelepasan Parsial | ≤10pC (pada 1.5U₀) | |
| Arus Tahan Hubung Singkat Terukur | 16kA/2s (20kA/2s optional, matched to system requirements) | |
| Resistansi Kontak | ≤100μΩ | |
| Parameter Struktural dan Material | Bahan Badan Utama | Epoxy resin (insulation layer), tin-plated copper (conductive terminal), rubber (sealing element) |
| Peringkat Perlindungan | IP67 | |
| Standar Antarmuka | Both ends: 15kV 200A standard cable accessory interface | |
| Metode Pentanahan | Integrated grounding terminal for direct earthing connection | |
| | Extension Length | Customizable (standard specifications: 150mm/200mm; special lengths available on request) | |
| Parameter Lingkungan | Ketinggian yang Berlaku | ≤2000m (versi ketinggian tinggi tersedia berdasarkan permintaan) |
| Suhu Sekitar | -40°C hingga +90°C (operasi), -40°C hingga +70°C (penyimpanan) | |
| Kelembaban Relatif | ≤100% (non-kondensasi) | |
| Peringkat Seismik | Kelas 8 | |
| Standar yang Berlaku | IEEE 386, GB/T 12706, DL/T 404, GB/T 11022 |
Cakupan Aplikasi
Applicable voltage class: 10kV to 15kV AC medium-voltage distribution systems; compatible with equipment bushing interfaces rated at a maximum operating voltage of 17.5kV.
Peralatan dan skenario yang berlaku:
Bushing interface extension for 15kV ring main units, compact substations, cable junction boxes, American-style pad-mounted transformers, and other distribution equipment, resolving insufficient installation space;
Digunakan bersama dengan konektor kabel siku, konektor bushing ujung tunggal/ganda, penangkal lonjakan, dan perangkat pentanahan untuk membangun terminasi kabel terpisah yang diperluas dan penangkal interfaces;
Urban distribution network cable lines, industrial and mining enterprise distribution systems, renewable energy (photovoltaic/wind power) step-up substation distribution interfaces;
Indoor/outdoor distribution rooms, underground utility tunnels, cable tunnels, and other installation-space-constrained scenarios requiring extended connections between equipment and accessories.
Functional purpose: Serves as an extended connection base between equipment bushings and cable accessories, providing insulation, sealing, conduction, and grounding connection, resolving insufficient installation space, and delivering a safe and reliable extended interface solution for distribution systems.
Kondisi Operasi
Kondisi Operasi Normal
Ketinggian: ≤2000m;
Suhu ambien: -40°C hingga +90°C; suhu operasional peralatan sesuai dengan standar yang relevan;
Kelembaban relatif: ≤100% (non-kondensasi);
Kondisi lingkungan: bebas dari gas korosif, media yang mudah terbakar atau meledak, serta getaran atau guncangan hebat;
Installation method: compatible with standard equipment bushing interfaces; horizontal or vertical installation permissible; installation space must satisfy the operational requirements of the associated accessories.
Kondisi Operasi Khusus (Memerlukan Kustomisasi)
Ketinggian melebihi 2000m;
Suhu ambien di luar rentang -40°C hingga +90°C;
Lingkungan yang sangat tercemar, kabut garam, atau korosif secara kimia;
Kondisi operasi getaran tinggi atau benturan tinggi;
Non-standard equipment bushing interface specifications or special extension length requirements;
Special grounding requirements or high pollution severity level applications.
Instalasi dan Pemeliharaan
Persyaratan Instalasi
Before installation, inspect the product appearance for cracks, damage, or voids, and verify the insulating surface is undamaged; check that conductive terminals and sealing elements are intact, free of corrosion and aging.
Clean the equipment bushing interface surface, removing oil, dust, and foreign matter; ensure the interface is dry and clean.
Install the Insulated Bushing Extender onto the equipment bushing interface, ensuring full seating, engage the locking retention structure, and connect the grounding terminal to the earthing grid with a grounding resistance ≤4Ω.
Apply an even coat of dedicated silicone lubricant to the inner wall of the Insulated Bushing Extender output interface, then install the associated elbow connectors, bushing connectors, or other accessories, ensuring full seating and engaging the anti-withdrawal locking device.
After installation, perform insulation resistance testing and power frequency withstand voltage testing; the unit may be placed into service only upon passing these tests.
Persyaratan Pemeliharaan
Periodically inspect the Insulated Bushing Extender appearance for cracks, discharge marks, or accumulated contamination; verify the grounding terminal connection is secure with no loosening, and that sealing elements show no aging or damage.
Periodically test insulation resistance to ensure performance meets requirements and to identify potential faults in a timely manner.
Clean the bushing extender surface, removing accumulated dust and contamination; keep the insulating surface dry and clean; avoid corrosion from oil or chemical substances.
If the bushing extender or associated accessories exhibit cracks, damage, discharge, abnormal heating, or other anomalies, immediately take out of service and replace; operation with known defects is strictly prohibited.
Insertion and withdrawal of associated accessories must be performed using dedicated insulating operating tools; bare-hand operation of energized connectors is strictly prohibited; all operations must strictly comply with distribution system safety regulations.
Tindakan pencegahan
The product must be installed, commissioned, and maintained by qualified electrical personnel holding medium-voltage distribution construction credentials; operation by non-qualified personnel is strictly prohibited.
The product must be used with equipment bushings and cable accessories of the corresponding specification; use with accessories of a different voltage class or current rating is strictly prohibited, as this will result in insulation failure and safety incidents.
The Insulated Bushing Extender must not be disassembled or modified without authorization, as this will void the warranty and safety assurance; use of non-dedicated tools to forcibly install or remove accessories is strictly prohibited.
During storage, the product must be kept in a dry, well-ventilated, cool environment, away from direct sunlight, high temperatures, moisture, and compressive loads; contact with sharp objects that could damage the insulation layer is strictly prohibited.
Live operation of associated accessories must strictly comply with distribution system safety regulations; appropriate safety protective measures must be taken; non-compliant operations are strictly prohibited.
Penunjukan Model
| Pengenal Model | Arti |
|---|---|
| JY | Penamaan seri produk |
| JCTGZ | Insulated Bushing Extender series designation |
| 15/200 | Applicable system voltage class 15kV, rated current class 200A |
| Insulated Bushing Extender | Extended insulated bushing extender; serves as extended connection base for equipment bushing interfaces |
Standar dan Sertifikasi yang Berlaku
Standar Internasional: IEEE 386, Standar untuk Isolasi Terpisah Konektor Sistem Distribusi Daya di Atas 600V;
Standar nasional: GB/T 12706, Kabel daya dengan insulasi ekstrusi dan aksesorisnya untuk tegangan pengenal dari 1kV (Um=1,2kV) hingga 35kV (Um=40,5kV); GB/T 11022, Spesifikasi umum untuk tegangan tinggi sakelar dan standar peralatan kontrol; DL/T 404, peralatan dan perlengkapan sakelar tertutup logam AC 3,6kV~40,5kV;
Produk ini telah lulus uji tipe oleh Pusat Pengawasan dan Inspeksi Kualitas Peralatan Listrik Tegangan Tinggi Nasional dan mematuhi standar keselamatan listrik nasional.
Layanan Purna Jual
Masa garansi produk: 18 bulan sejak tanggal produksi, atau 12 bulan sejak tanggal pengoperasian, mana saja yang lebih dulu.
Selama masa garansi, produk dengan cacat kualitas akan diperbaiki atau diganti secara gratis;
Technical support, installation guidance, and customization services are available (special extension lengths, special operating condition adaptation).
Documentation Notes
Parameter teknis dalam manual ini didasarkan pada kondisi operasi standar. Kondisi operasi khusus memerlukan penyesuaian sesuai dengan kebutuhan aktual. Perjanjian teknis produk dan laporan uji tipe akan berlaku sebagai referensi akhir.
