行业组件数据 · 2026

接地端子

Grounding points are electrical safety components that provide a low-resistance path to earth for fault currents in industrial I/O panels.

技术定义与适配语境
典型 接地端子 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

Grounding points, also known as grounding terminals or earth points, are specifically designed connection points within an I/O panel that establish a reliable electrical connection between equipment chassis, shields, and safety grounds to the earth ground system. They serve as critical safety interfaces that prevent hazardous voltage buildup, protect against electrical shock, ensure electromagnetic compatibility by providing a reference potential, and facilitate proper operation of protective devices like circuit breakers during fault conditions.

组件规格

定义
Grounding points, also known as grounding terminals or earth points, are specifically designed connection points within an I/O panel that establish a reliable electrical connection between equipment chassis, shields, and safety grounds to the earth ground system. They serve as critical safety interfaces that prevent hazardous voltage buildup, protect against electrical shock, ensure electromagnetic compatibility by providing a reference potential, and facilitate proper operation of protective devices like circuit breakers during fault conditions.
工作原理
Grounding points operate on the principle of providing a dedicated, low-impedance conductive path to earth ground. When connected properly, they equalize potential differences between equipment and ground, divert fault currents safely away from personnel and sensitive components, and create a reference point for electrical systems. This prevents static charge accumulation, reduces electromagnetic interference (EMI), and ensures that overcurrent protection devices activate promptly during ground faults.
材料
Typically made from highly conductivecorrosion-resistant materials: copper alloys (C11000C10100)tinned copperbrassor stainless steel (304316) with electroplated finishes (tinnickelor silver plating) to enhance conductivity and prevent oxidation. Insulating parts may use UL94-rated thermoplastics.
IP Rating
IP20 to IP67
Resistance
< 0.1 ohm
Mounting Type
Panel-mounted, DIN rail, or direct chassis
Current Rating
25A to 200A
Voltage Rating
Up to 1000V AC/DC
Temperature Range
-40°C to +105°C
Torque Specification
2.0-4.5 Nm
Wire Size Compatibility
AWG 22 to 4/0
标准
ISO 3864IEC 60204-1UL 467DIN EN 60947-1

行业分类与别名

接地端子 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Loose terminal connections or corrosion->Increased resistance leading to overheating or ineffective grounding->Use proper torque tools during installation, apply anti-oxidant compounds, and schedule regular inspections.
Incorrect wire sizing or material incompatibility->Inadequate fault current carrying capacity or galvanic corrosion->Follow manufacturer specs for wire gauge, use UL-listed components, and ensure material compatibility.
Poor panel design isolating ground points->Uneven potential distribution causing EMI or shock risk->Implement star-point grounding topology, minimize ground path lengths, and verify designs per IEC 60204-1.

工业生态与工程逻辑

0
Electrical shock due to poor connection
1
Equipment damage from ground loops
2
Fire hazard from high-resistance joints
3
EMI interference affecting control signals

合规与检测

tolerance
Ground resistance must not exceed 0.1 ohm under test conditions; connections must maintain integrity under vibration per IEC 60068-2-6.
test method
Use low-resistance ohmmeter (4-wire method) for resistance verification; perform dielectric strength test at 1500V AC for 1 minute per UL 467.

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来自 CNFX 组件能力表的相关制造商资料。

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。

相关组件

常见问题

Why are grounding points critical in I/O panels?

They prevent electrical shock hazards, protect sensitive electronics from voltage surges, ensure regulatory compliance, and reduce electromagnetic interference that can disrupt signal integrity.

How often should grounding connections be inspected?

Visual and electrical resistance tests should be performed during routine maintenance, typically every 6-12 months, or as specified by equipment manuals and safety standards.

Can different materials be mixed in grounding systems?

No, mixing dissimilar metals (e.g., copper and aluminum) can cause galvanic corrosion, increasing resistance. Use compatible materials or approved bi-metallic connectors.

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CNFX Industrial Component Index · 机械和设备制造

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初步技术归类
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URN:CNFX:ME:UNIT:GROUNDING_POINTS