行业组件数据 · 2026

电容器元件

Capacitor element is the core energy storage component in filter capacitor banks, used for power factor correction and harmonic filtering in industrial electrical systems.

技术定义与适配语境
典型 电容器元件 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

A capacitor element is the fundamental building block of industrial filter capacitor banks, consisting of dielectric material sandwiched between conductive electrodes. It stores electrical energy in an electrostatic field and releases it when needed to improve power quality by correcting power factor and filtering harmonics in AC power systems. These elements are designed for high reliability, low losses, and stable performance under varying industrial conditions.

组件规格

定义
A capacitor element is the fundamental building block of industrial filter capacitor banks, consisting of dielectric material sandwiched between conductive electrodes. It stores electrical energy in an electrostatic field and releases it when needed to improve power quality by correcting power factor and filtering harmonics in AC power systems. These elements are designed for high reliability, low losses, and stable performance under varying industrial conditions.
工作原理
The capacitor element operates on the principle of electrostatic energy storage. When voltage is applied across its terminals, opposite electric charges accumulate on the conductive plates separated by dielectric material, creating an electric field. In filter capacitor banks, multiple elements are connected in series/parallel configurations to achieve desired capacitance and voltage ratings. They provide reactive power compensation by leading the current phase relative to voltage, thereby improving power factor and reducing harmonic distortion in industrial power systems.
材料
Conductive electrodes: Aluminum foil or metallized polypropylene filmDielectric: Polypropylene film (most common)paper impregnated with dielectric fluidor ceramic materialsEncapsulation: Epoxy resin or polyurethane for protectionTerminals: Tin-plated copper or aluminum.
Frequency
50/60 Hz
Tolerance
±5% to ±10%
Voltage Rating
230V to 1000V AC
Capacitance Range
1μF to 100μF per element
Expected Lifespan
100,000 hours at rated conditions
Temperature Range
-40°C to +85°C
Dissipation Factor
<0.001 at 20°C
标准
IEC 60831IEEE 18UL 810

行业分类与别名

电容器元件 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

Overvoltage conditions exceeding rated voltage->Dielectric breakdown and permanent short circuit->Install overvoltage protection devices and select elements with appropriate voltage derating
Excessive harmonic currents causing overheating->Thermal degradation and reduced capacitance->Use harmonic filters upstream and select elements designed for harmonic-rich environments
Poor ventilation leading to elevated operating temperatures->Accelerated aging and premature failure->Ensure adequate cooling and maintain ambient temperature within specified limits

工业生态与工程逻辑

0
Dielectric breakdown due to overvoltage
1
Thermal runaway from excessive current
2
Internal short circuits causing system failure
3
Reduced lifespan from harmonic distortion

合规与检测

tolerance
Capacitance tolerance ±5% to ±10% as per IEC 60831, voltage withstand 2.15 times rated voltage for 10 seconds
test method
Capacitance measurement at 20°C with bridge method, dissipation factor measurement, voltage withstand test, and thermal cycling tests per IEC 60831 standards

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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

What is the main function of a capacitor element in filter capacitor banks?

The capacitor element stores and releases electrical energy to provide reactive power compensation, improving power factor and filtering harmonics in industrial power systems.

How do I select the right capacitor element for my application?

Consider voltage rating, capacitance value, temperature range, and compliance with standards like IEC 60831. Consult manufacturer datasheets for specific industrial requirements.

What are common failure modes of capacitor elements?

Dielectric breakdown, internal short circuits, electrolyte drying (in wet types), and terminal corrosion are common failures, often caused by overvoltage, overheating, or aging.

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CNFX Industrial Component Index · 电气设备制造

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初步技术归类
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