行业验证制造数据 · 2026

接地夹

基于 CNFX 目录中多个工厂资料的聚合洞察,接地夹 在 电气设备制造 行业中通常会围绕 标准工业配置 到 重载生产要求 进行能力评估。

技术定义与核心装配

一个典型的 接地夹 通常集成 Clamp Body 与 Pressure Plate/Bar。CNFX 上列出的制造商通常强调 Copper 结构,以支持稳定的生产应用。

Electrical connectors used to establish a secure, low-resistance connection between grounding conductors and grounding electrodes or other grounded objects.

技术定义

Grounding clamps are essential components within grounding systems that provide a reliable mechanical and electrical connection point. They ensure proper bonding between grounding wires/cables and grounding rods, pipes, rails, or other conductive structures, facilitating safe dissipation of fault currents and static electricity to earth.

工作原理

Grounding clamps work by creating a tight mechanical grip on both the grounding conductor and the grounded object, ensuring maximum surface contact area. This minimizes electrical resistance at the connection point, allowing electrical currents (including fault currents and lightning strikes) to flow safely to ground without creating hazardous voltage potentials. Many designs incorporate corrosion-resistant materials and pressure mechanisms to maintain connection integrity over time.

主要材料

Copper Bronze Galvanized Steel Stainless Steel

组件 / BOM

Clamp Body
Main structural component that houses the connection mechanism and provides mechanical strength
材料: Copper alloy or galvanized steel
Pressure Plate/Bar
Applies uniform pressure to secure the grounding conductor against the clamp body
材料: Copper or bronze
Fastening Hardware
Bolts, nuts, or screws that create and maintain clamping pressure
材料: Stainless steel or corrosion-resistant alloy
Contact Surface
Area where electrical contact is made with the grounding conductor and grounded object
材料: High-conductivity copper with optional tin plating

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Galvanic corrosion between dissimilar metals (copper conductor to aluminum clamp body) Increased contact resistance leading to thermal runaway Bimetallic transition washers with tin plating (0.005 mm thickness) and anti-oxidation paste application
Vibration-induced fretting at 50-200 Hz frequency range Contact surface micro-wear and oxide debris accumulation Spring-loaded contact design with 20-40 N clamping force and vibration-damping elastomer inserts

工程推理

运行范围
范围
0.1-1000 A continuous current, 0.001-0.01 Ω contact resistance, -40°C to 85°C ambient temperature
失效边界
Contact resistance exceeding 0.1 Ω, temperature rise above 30°C above ambient at rated current, mechanical deformation exceeding 0.5 mm
Oxide layer formation on contact surfaces (aluminum oxide resistivity: 1×10^14 Ω·m), thermal expansion mismatch (copper-aluminum CTE difference: 23.1×10^-6/°C vs 16.5×10^-6/°C), plastic deformation beyond yield strength (copper: 70 MPa)
制造语境
接地夹 在 电气设备制造 中会按材料、工艺窗口和检验要求共同评估。

别名与俗称

Ground Clamps Earthing Clamps Grounding Connectors

行业别名与关键词

该产品在 CNFX 数据库中的搜索词、别名和技术称呼。

应用产品 / 所属系统

该产品或部件会出现在以下工业系统、设备或上级产品中。

应用匹配与尺寸矩阵

运行限制
pressure:Not applicable (mechanical connection only)
other spec:Conductor diameter range: 10 AWG to 500 kcmil, Clamp torque: 20-100 lb-in, Contact resistance: <0.1 ohm
temperature:-40°C to 150°C
兼容性
Copper conductorsGalvanized steel structuresAluminum busbars
不适用:High-vibration environments without vibration-resistant features
选型所需数据
  • Conductor diameter/size
  • Grounding electrode material and diameter
  • Required mechanical strength/installation torque

可靠性与工程风险分析

失效模式与根因
High Resistance Connection
原因:Corrosion buildup on contact surfaces, improper clamping force, or surface contamination preventing proper electrical contact, leading to overheating and potential arc flash.
Mechanical Failure
原因:Fatigue cracking in jaw components from repeated opening/closing cycles, or material degradation from exposure to harsh environments (chemicals, UV, extreme temperatures), compromising structural integrity.
维护信号
  • Visible discoloration, melting, or charring on clamp surfaces indicating overheating during use
  • Audible crackling or popping sounds during operation, suggesting arcing or poor electrical contact
工程建议
  • Implement regular contact surface maintenance: clean mating surfaces with appropriate solvents, apply anti-oxidant compound, and verify clamping force meets manufacturer specifications using torque measurement tools.
  • Establish inspection protocol for mechanical wear: check for jaw misalignment, spring tension degradation, and hairline cracks using magnified visual inspection, especially after high-current applications or environmental exposure events.

合规与制造标准

参考标准
ISO 1461:2009 - Hot dip galvanized coatings on fabricated iron and steel articlesANSI C119.4-2016 - Connectors for Use Between Aluminum or Aluminum-Alloy Conductors and Copper or Copper-Alloy ConductorsDIN 46267-1:1989 - Clamping devices for earthing and equipotential bonding
制造精度
  • Bore diameter: +/-0.05mm
  • Surface flatness: 0.15mm
质量检验
  • Electrical continuity test (resistance measurement)
  • Visual and dimensional inspection per drawing specifications

生产该产品的制造商

具备该产品生产能力的中国制造商与相关工厂资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

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常见问题

What materials are best for grounding clamps in corrosive environments?

Stainless steel or bronze grounding clamps offer superior corrosion resistance in harsh environments like coastal areas or chemical plants.

How do I ensure proper installation of a grounding clamp?

Clean contact surfaces thoroughly, use appropriate torque on fastening hardware, and verify low-resistance connection with testing equipment per NEC requirements.

What's the difference between grounding clamps for copper vs. aluminum conductors?

Clamps for aluminum conductors typically have special contact surfaces or compounds to prevent galvanic corrosion when connecting to dissimilar metals like copper.

我可以直接联系工厂吗?

CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Index v2.6.05 · 电气设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

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