Oct 9, 2026Buying Guides
Cylindrical Self-Healing Shunt Capacitor | BOSTENE
Explore cylindrical self-healing low voltage shunt capacitors for power factor correction. Learn how to select voltage, kVAR and replacement specifications.
Cylindrical Self-Healing Low Voltage Shunt Capacitors: How to Choose the Right Model
Selecting the right low voltage shunt capacitor is important when building a new reactive power compensation cabinet or replacing capacitors in an existing system.
Description
Cylindrical self-healing shunt capacitors are used for power factor correction in low-voltage electrical systems. They help compensate for reactive power demand and can improve power factor when correctly sized and applied.
These capacitors use metallized polypropylene film dielectric. The self-healing design allows certain localized dielectric faults to be isolated, helping the capacitor maintain operation under suitable conditions.
Their cylindrical construction allows installation within capacitor banks and reactive power compensation cabinets, subject to the required mounting space and electrical specifications.
Key Specifications
Parameter | Specification |
|---|---|
Product Type | Low Voltage Shunt Capacitor |
Construction | Cylindrical |
Dielectric | Metallized Polypropylene Film |
Technology | Self-Healing |
Rated Voltage | According to Selected Model |
Reactive Power | kVAR Rating According to Model |
Frequency | 50/60 Hz, Subject to Model |
Application | Power Factor Correction |
Installation | Indoor Compensation Cabinets |
Final specifications should be verified against the selected capacitor's datasheet.
Applications
Typical applications include industrial power factor correction systems, automatic capacitor banks, factory distribution panels and reactive power compensation cabinets.
What Should You Check Before Ordering?
For replacement projects, the first step is to check the existing capacitor nameplate. The new unit should match the required voltage rating, kVAR capacity, frequency, connection arrangement and installation dimensions.
For new installations, capacitor selection should follow the electrical system design rather than relying on a standard capacity alone.
You should also confirm whether the system contains variable frequency drives or other harmonic-producing equipment. Harmonic conditions may affect capacitor selection and determine whether detuned reactors or other measures are needed.
How to Avoid Capacitor Selection Problems
A common purchasing mistake is choosing a capacitor based only on its kVAR rating. Two capacitors with similar dimensions may have different voltage ratings, terminal arrangements or operating limits.
Before placing an order, confirm the capacitor specifications, available mounting space and compatibility with the existing compensation equipment.
For a BOSTENE capacitor inquiry, provide the required voltage, kVAR rating, frequency, quantity and existing capacitor nameplate information where available. These details help clarify the required configuration and reduce specification mismatches before ordering.
