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- 产品简介
- 技术规格
- 应用领域
- 测试能力
- 包装与定制
产品详情
The 21kV composite polymer metal oxide surge arrester is designed for overvoltage protection in medium-voltage distribution systems. Wishpower uses high-performance zinc oxide varistors and a silicone rubber polymer housing to provide reliable lightning protection, pollution resistance, lightweight installation and long-term outdoor service performance.
Compared with traditional porcelain-housed arresters, the composite polymer housed arrester offers better safety, lighter weight and easier installation.
High-performance zinc oxide varistors provide fast response and low residual voltage.
Silicone rubber housing offers excellent hydrophobicity and pollution resistance.
Lightweight structure simplifies transportation, installation and maintenance.
Gapless design supports stable operation in distribution networks.
Customized fittings and mounting accessories are available for different project requirements.
Core Features
Reliable overvoltage protection
The 21kV composite surge arrester effectively limits lightning overvoltage and switching overvoltage, reducing insulation failure risks in distribution equipment.High-quality zinc oxide varistors
The metal oxide varistor blocks current under normal operating voltage and conducts rapidly under surge conditions.Safe polymer housing
The silicone rubber composite housing provides high safety performance and avoids the explosion risk associated with porcelain housing.Excellent pollution resistance
The hydrophobic polymer surface helps reduce flashover risk in coastal areas, industrial zones, mountainous regions and rural distribution networks.Easy installation and maintenance
The arrester is compact and lightweight, suitable for pole-mounted installation, overhead lines, substations and cable terminal protection.Stable long-term operation
Reliable sealing design and weather-resistant materials support long outdoor service life.
Product Structure
Wishpower 21kV composite polymer metal oxide surge arrester generally consists of the following components:
Zinc oxide varistor blocks: the core protective element for surge current discharge and overvoltage limitation.
Silicone rubber polymer housing: provides external insulation, weather resistance and anti-pollution performance.
Fiberglass-reinforced structure or insulation support: improves mechanical strength and structural stability.
Upper and lower metal fittings: used for line connection, grounding and installation.
Sealing system: prevents moisture ingress and ensures long-term reliability.
Disconnector: optional accessory used to separate a failed arrester from the system for easier maintenance identification.
技术参数
| Item | Technical Parameter |
|---|---|
| Product Name | 21kV Composite Polymer Metal Oxide Surge Arrester |
| Product Type | Polymer Housed Metal Oxide Surge Arrester |
| Rated Voltage | 21kV |
| Applicable System | Medium-Voltage Distribution System |
| Nominal Discharge Current | 5kA / 10kA, customizable |
| Structure Type | Gapless Zinc Oxide Surge Arrester |
| Housing Material | HTV Silicone Rubber / Composite Polymer Housing |
| Core Material | Zinc Oxide Varistor Blocks |
| Installation Environment | Indoor / Outdoor |
| Mounting Type | Line-mounted, pole-mounted, substation-mounted, cable terminal-mounted |
| Rated Frequency | 50Hz / 60Hz |
| Pollution Level | Designed according to project requirements |
| Creepage Distance | Customized according to standards or project specifications |
| End Fittings | Hot-dip galvanized steel or stainless steel |
| Standard | IEC 60099-4 or applicable project standard |
| Brand | Wishpower |
| Customization | Voltage rating, creepage distance, fittings and accessories available |
产品结构
主要应用领域
The 21kV composite polymer metal oxide surge arrester is widely used in:
Medium-voltage distribution line protection
Overhead line lightning protection
High-voltage side protection of distribution transformers
Substation incoming and outgoing feeder protection
Switchgear and ring main unit overvoltage protection
Cable terminal and cable branch box protection
Urban and rural distribution networks
Wind power and solar power distribution systems
Industrial parks, mining areas and polluted power supply environments
测试能力
Wishpower can perform relevant tests for 21kV composite polymer metal oxide surge arresters according to project requirements to ensure reliable operation in medium-voltage distribution systems.
Visual and dimensional inspection: checks product structure, markings, fittings and housing quality.
Power frequency reference voltage test: verifies electrical performance under specified current.
DC reference voltage test: checks the stability of zinc oxide varistor performance.
Leakage current test: evaluates insulation condition under operating voltage.
Residual voltage test: confirms the protection level under impulse current.
Partial discharge test: verifies internal insulation and sealing quality.
Sealing performance test: prevents moisture ingress and improves outdoor reliability.
Tensile or mechanical strength test: confirms fitting connection and structural strength.
Aging and weather resistance test: evaluates polymer housing performance under UV, humidity and polluted environments.
包装与运输
为确保产品在运输和储存过程中的安全，我们采用以下包装方法：
- 独立包装: 每件产品均用保护膜包裹，装入高强度纸箱，并用缓冲材料进行缓冲。
- 托盘包装: 多个产品固定在木托盘上，并用拉伸膜包裹，适合集装箱运输。
- 出口包装: 根据海运要求提供熏蒸木箱、防潮处理和详细的装箱单。
定制服务
WishPower可根据客户需求提供以下定制选项：
- 结构尺寸: 调整总高度、爬升高度、棚架数量和棚架直径。
- 端部配件: 根据连接要求定制球窝、舌形接头、环眼或其他接口类型。
- 颜色: 标准灰色，红色、黄色、蓝色等其他颜色可根据最低起订量提供。
- 特殊环境: 适用于极寒（-60°C）、强紫外线照射、严重污染和其他恶劣条件的配方。
- 电压等级: 10kV 至 1000kV 全范围定制。
- 标记: 客户的标志或型号可以模压或印刷在产品上。
如有任何定制需求，请联系我们的销售工程师。我们将在24小时内提供技术解决方案。
FAQ
Q: What standards can your products meet?
A: Our products can be designed and tested according to IEC, ANSI, GB and customer-specific technical requirements.
Q: Are composite insulators suitable for coastal areas?
A: Yes. Composite insulators with silicone rubber housing provide good hydrophobicity and anti-pollution performance, making them suitable for coastal and polluted environments.
Q: What information should I provide for a quotation?
A: Please provide voltage level, product type, quantity, application environment, standard, drawings or technical specifications if available.
Q: Can you provide customized insulation products?
A: Yes. WishPower supports customized voltage ratings, creepage distances, fittings, colors and drawings according to project requirements.
Q: How do I choose the right composite insulator for my project?
A: You can provide voltage level, installation type, mechanical load, creepage distance and operating environment. Our team will recommend the suitable model.
