The **KAP-F3-R/Q** is a specific series designation primarily associated with **Power Factor Correction (PFC) Capacitors** manufactured by companies like Kendeil or similar industrial electronic component suppliers. These are designed for heavy-duty industrial applications to improve energy efficiency. --- ### 1. Key Technical Specifications Below is a breakdown of the typical electronic characteristics found in the KAP-F3-R/Q series: | Parameter | Description | | :--- | :--- | | **Component Type** | Three-phase Power Factor Correction Capacitor | | **Dielectric Material** | Metallized Polypropylene Film (Self-healing) | | **Voltage Range** | Usually 230V to 525V AC (50/60 Hz) | | **Connection** | Delta ($\Delta$) connection internally | | **Discharge Resistors** | Integrated (reduces residual voltage to <50V within 1 min) | | **Safety Device** | Overpressure disconnector (Internal fuse mechanism) | --- ### 2. Functional Electronic Parts The KAP-F3-R/Q is not a single component but an assembly of several electronic sub-parts: #### A. Metallized Polypropylene (MKP) The "heart" of the unit. It uses a thin plastic film with a vacuum-deposited metal layer. If a dielectric breakdown occurs (due to a voltage spike), the metal layer evaporates around the point of failure, "healing" the capacitor and preventing a short circuit. #### B. Discharge Resistors Safety is a priority. These resistors are wired across the terminals to drain the stored electrical energy once the power is disconnected, preventing electric shocks to technicians. #### C. Overpressure Disconnector A mechanical-electronic safety feature. If internal pressure builds up due to overheating or end-of-life failure, the top of the casing expands, physically breaking the internal wires and disconnecting the capacitor from the circuit. #### D. Dry Resin / Oil Filling The internal void is filled with non-toxic, biodegradable vegetable oil or dry resin to enhance cooling and insulation properties. --- ### 3. Application Use Cases * **Motor Compensation:** To offset the inductive load of large industrial motors. * **Transformer Compensation:** Reducing reactive power losses in distribution transformers. * **Automatic Capacitor Banks:** Used as modules in large Racks (Q-series often denotes modularity for banks). --- ### 4. Part Number Decoding (Typical) While specific to the manufacturer, the code generally follows this logic: * **KAP:** Product Family (Kendeil Advanced Polypropylene). * **F3:** Three-phase configuration. * **R/Q:** Specifies the terminal type (R = Stud/Bolt, Q = Fast-on or specific terminal block).