Inner Tapered Insulation Sleeves (Inner Tapered Sockets)
نظرة عامة على المنتج
Inner Tapered Insulation Sleeves (Inner Tapered Sockets) هي مكونات عزل مصبوبة من راتنج الإيبوكسي مصممة خصيصًا لأنظمة توزيع الطاقة متوسطة الجهد 10 كيلوفولت/24 كيلوفولت. تتميز ببنية واجهة داخلية مستدقة، وتعمل كقواعد توصيل معزولة بين ملحقات الكابلات ومعدات التوزيع (وحدات الحلقة الرئيسية، switchgear، المحولات المثبتة على المنصات)، مما يوفر وظائف التوصيل الموصل، والعزل الكهربائي، والدعم الميكانيكي. وهي المكونات الأساسية لتحقيق توصيلات آمنة وموثوقة للملحقات الكبلية القابلة للفصل، وتستخدم على نطاق واسع كواجهات دخول/خروج للكابلات لمعدات التوزيع الداخلية والخارجية.
ميزات المنتج
الأداء الكهربائي والعزل
Manufactured by integral casting with high-performance epoxy resin, the product is seamless and void-free with excellent insulation properties. It withstands the rated voltage and short-duration overvoltages of 10kV/24kV systems with sufficient insulation margin; partial discharge ≤10pC (at 1.5U₀).
Built-in electric field optimization structure and stress control layer uniformly distribute the electric field and effectively suppress partial discharge, eliminating the risk of electrical erosion and breakdown during long-term operation, with stable and reliable insulation performance.
Built-in copper/aluminum conductive inserts provide excellent conductivity with low contact resistance, capable of carrying the rated current of the corresponding current rating. Heat generation during long-term operation is minimal, with strong anti-corrosion and anti-oxidation performance.
The insulation surface is treated with a special process to achieve high surface resistivity and strong hydrophobicity, effectively preventing surface flashover caused by condensation and contamination, and improving insulation reliability in harsh environments.
الميزات الهيكلية والسلامة
Standardized inner tapered interface design strictly complies with GB/T 12706 and IEC 60840 standards, allowing universal interchangeability with inner tapered cable accessories of the same specification (elbow connectors, surge arresters, insulating caps) with strong compatibility.
Integrated structural design: the rear end features a flange mounting base for direct attachment to the distribution equipment enclosure, while the front end provides an inner tapered interface for insulation isolation and conductive connection between the equipment and cable accessories. Installation is convenient with no additional adapter components required.
Anti-misinsertion and anti-misconnection design: interface dimensions are uniquely matched, allowing connection only with cable accessories of the corresponding specification, eliminating mixed use of accessories of different ratings. Built-in positioning and locking structure prevents loosening and disengagement after installation.
Fully insulated structure with high outer insulation strength eliminates the risk of electric shock during operation, ensuring the safety of operation and maintenance personnel.
الأداء البيئي ومقاومة العوامل الجوية
Excellent weather resistance suitable for a wide temperature range of -40°C to +90°C; epoxy resin performance does not degrade at high or low temperatures with no risk of cracking or embrittlement, adaptable to outdoor and indoor applications.
Moisture-proof, waterproof, pollution-resistant, and salt spray-resistant with IP67 protection rating, capable of long-term stable operation in humid, dusty, salt spray, and other harsh environments, immune to rainwater and condensation ingress.
Anti-aging, UV-resistant, and ozone-resistant with a service life exceeding 30 years. Maintenance-free operation reduces long-term operational and maintenance costs.
الميزات الميكانيكية والتوافق
قوة ميكانيكية عالية مع مقاومة للصدمات والاهتزازات، قادرة على تحمل الإجهادات الميكانيكية أثناء النقل والتركيب والتشغيل دون خطر التشوه أو التلف؛ تصنيف مقاومة الزلازل من الدرجة الثامنة.
Flange mounting structure design compatible with standard mounting hole patterns of mainstream distribution equipment, allowing convenient installation without special tools.
Available in multiple specifications including 1#, 2#, and 3#, adaptable to distribution equipment and cable accessories of different voltage and current ratings with strong universality.
المعلمات الفنية
| فئة المعلمة | معامل | مواصفات |
| البارامترات الكهربائية المقدرة | جهد النظام (Un) | 10kV/20kV |
| الجهد المقنن (Ue) | 12kV/24kV | |
| الجهد التشغيلي الأقصى (Um) | 17.5kV/25.2kV | |
| التردد المقنن (fn) | 50 هرتز/60 هرتز | |
| | جهد تحمل التردد الكهربائي | 42kV/5min (12kV dry test), 65kV/5min (24kV dry test), no breakdown, no flashover | |
| | جهد تحمل النبضات البرقية | 95kV (12kV peak), 125kV (24kV peak), no breakdown, no flashover | |
| التفريغ الجزئي | ≤10 بيكو كولوم (عند 1.5U₀) | |
| | التيار المقنن | 630A/1250A (multiple specifications available) | |
| | تيار تحمل الدائرة القصيرة المقنن | 20kA/2s, 25kA/2s, 31.5kA/2s (optional) | |
| مقاومة التلامس | ≤50 ميكرو أوم | |
| المعلمات الهيكلية والمادية | مادة الجسم الرئيسية | Epoxy resin (insulation layer), copper/aluminum tin-plated (conductive inserts) |
| | تصنيف الحماية | IP67 | |
| معيار الواجهة | Inner tapered interface complying with GB/T 12706 and IEC 60840 standards | |
| | Specification Series | 1#, 2#, 3# (adaptable to different voltage/current ratings) | |
| المعايير البيئية | ارتفاع التطبيق | ≤2000 متر (تخصيص للارتفاعات العالية متاح) |
| | درجة الحرارة المحيطة | -٤٠ درجة مئوية إلى +٩٠ درجة مئوية (درجة حرارة التشغيل)، -٤٠ درجة مئوية إلى +٧٠ درجة مئوية (درجة حرارة التخزين) | |
| | الرطوبة النسبية | ≤100% (غير متكثف) | |
| | تصنيف مقاومة الزلازل | الصف الثامن | |
| المعايير المطبقة | GB/T 12706، IEC 60840، GB/T 11022، DL/T 404 |
تطبيقات
Applicable Voltage Ratings: 10kV/20kV AC medium-voltage power distribution systems, compatible with distribution equipment having maximum operating voltages of 17.5kV/25.2kV.
المعدات والسيناريوهات المطبقة:
Cable inlet/outlet interfaces for 10kV/24kV ring main units, switchgear, pad-mounted transformers, American-style transformers, and other distribution equipment, serving as connection bases for inner tapered cable accessories;
تُستخدم بالاقتران مع موصلات الكابلات الداخلية ذات الكوع المستدق، ومانعات الاندفاع، والأغطية العازلة لتشكيل أطراف كابلات قابلة للفصل بالكامل ومانعات اندفاع مانع interfaces;
Urban distribution network cable circuits, industrial and mining enterprise power distribution systems, new energy (photovoltaic/wind power) step-up substation distribution equipment interfaces;
Interface installation for indoor/outdoor distribution rooms, underground utility tunnels, cable tunnels, and other multi-scenario distribution equipment.
Functional Purpose: Serves as an integrated insulated connection base between distribution equipment and inner tapered cable accessories, providing insulation, sealing, conduction, and mechanical support connections, delivering safe and reliable cable interface solutions for medium-voltage power distribution systems.
ظروف التشغيل
ظروف التشغيل العادية
الارتفاع: ≤2000م
درجة حرارة المحيط: -40 درجة مئوية إلى +90 درجة مئوية، درجة حرارة تشغيل المعدات متوافقة مع المعايير ذات الصلة؛
الرطوبة النسبية: ≤100% (غير متكثف)
Environmental conditions: no corrosive gases, no flammable or explosive media, no severe vibration or shock;
Installation method: flange-fixed mounting to equipment enclosure; horizontal or vertical installation acceptable; installation space must meet accessory mating operation requirements.
ظروف التشغيل الخاصة (يتطلب تخصيصًا)
ارتفاع يتجاوز 2000 متر؛
درجة الحرارة المحيطة خارج النطاق من -40 درجة مئوية إلى +90 درجة مئوية؛
بيئات ملوثة بشدة، أو رذاذ ملحي، أو بيئات أكالة كيميائيًا؛
ظروف الاهتزاز العالي أو الصدمات العالية؛
Non-standard flange mounting hole patterns or special interface specifications;
Special grounding requirements or high pollution level applications.
التركيب والصيانة
متطلبات التثبيت
Prior to installation, inspect the product appearance for cracks, damage, and voids; verify that the insulation surface is undamaged and the conductive inserts are intact, free of corrosion and deformation.
Clean the equipment enclosure mounting surface by removing oil, dust, and foreign matter; ensure the mounting surface is flat and clean; install the sealing gasket to ensure reliable flange face sealing.
Align the sleeve flange with the equipment enclosure mounting holes and tighten with the supplied bolts to the specified torque to prevent loosening that could cause seal failure or poor contact.
Apply a uniform coat of dedicated silicone grease lubricant to the inner wall of the sleeve’s inner tapered interface before installing the matching inner tapered cable accessories; ensure accessories are fully seated and engage the anti-withdrawal locking device.
After installation, perform insulation resistance testing and power frequency withstand voltage testing; the unit may be energized only after passing these tests.
متطلبات الصيانة
Periodically inspect the sleeve appearance for cracks, discharge marks, and contamination accumulation; verify flange connection bolts are not loose and seals are free of aging or damage.
اختبر مقاومة العزل بشكل دوري للتحقق من الامتثال للأداء وتحديد الأعطال المحتملة على الفور.
Clean the sleeve surface by removing dust and contamination; maintain the insulation surface dry and clean; prevent contamination by oil or chemical substances.
If cracks, damage, discharge, overheating, or other abnormalities occur on the sleeve or associated accessories, immediately de-energize and replace; continued operation in a degraded condition is strictly prohibited.
Insertion and withdrawal of associated accessories must be performed using dedicated insulated operating tools; bare-hand operation of energized connectors is strictly prohibited; all operations must strictly comply with power distribution safety regulations.
احتياطات
The product must be installed, commissioned, and maintained by qualified electrical personnel holding medium-voltage distribution construction credentials; operation by unqualified personnel is strictly prohibited.
The product must be used with inner tapered cable accessories of the corresponding specification; pairing with accessories of different voltage or current ratings is strictly prohibited, as this will cause insulation failure and safety incidents.
The sleeve must not be disassembled or modified without authorization, as doing so will void the warranty and safety assurance; use of non-dedicated tools to forcibly install or remove accessories is strictly prohibited.
Flange mounting bolts must be tightened to the specified torque to prevent loosening that could cause seal failure or poor contact and affect safe equipment operation.
Store in a dry, ventilated, cool environment away from direct sunlight, high temperatures, humidity, and compression; contact with sharp objects that could damage the insulation layer is strictly prohibited.
When performing live-line operations on associated accessories, strictly comply with power distribution safety regulations, implement proper safety protective measures, and avoid any unauthorized operations.
اسم الطراز
| اسم الطراز | وصف |
|---|---|
| 1#/2#/3# | Specification series codes, adaptable to distribution equipment and cable accessories of different voltage and current ratings respectively |
| Inner Tapered Insulation Sleeves | Inner tapered insulation sleeves cast from epoxy resin, serving as connection bases for inner tapered cable accessories |
المعايير والشهادات المطبقة
International Standard: IEC 60840 “Power cables with extruded insulation and their accessories for rated voltages above 30kV (Um=36kV) up to 150kV (Um=170kV) — Test methods and requirements”;
National Standards: GB/T 12706 “Power cables with extruded insulation and their accessories for rated voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV)”, GB/T 11022 “Common specifications for high-voltage switchgear and controlgear standards”, DL/T 404 “3.6kV~40.5kV AC metal-enclosed switchgear and controlgear”;
لقد اجتاز المنتج اختبارات النوع من قبل المركز الوطني للإشراف وفحص جودة الأجهزة الكهربائية ذات الجهد العالي ويتوافق مع معايير السلامة الكهربائية الوطنية.
خدمة ما بعد البيع
Product warranty period: 18 months from the date of delivery from the factory, or 12 months from the date of commissioning, whichever comes first;
Free repair or replacement for quality-related issues within the warranty period;
يتم تقديم خدمات الدعم الفني، وإرشادات التركيب، والتخصيص (مواصفات خاصة، تكييف ظروف تشغيل خاصة).
إشعار توثيقي
The technical parameters in this manual are based on standard operating conditions. Special operating conditions require customization based on actual requirements; the product technical agreement and type test report shall prevail as the final reference.
ملحق: مخطط تفصيلي للمنتج
