Model: SET-CAPD-250/280/300-3YN
SET-CAPD 250V/280V/300V 3YN cylindrical low-voltage power capacitors, 5–30 kVAR, for detuned compensation and industrial power-factor correction.
Low voltage power capacitor from SET is designed for 3YN systems rated 250V, 280V or 300V. The 5–30 kVAR range provides balanced three-phase power-factor correction and reduces line losses. Self-healing metallized film and discharge protection support reliable service. See the IEC standards for capacitor design.
5–30 kVAR cylindrical capacitor series for efficient power-factor correction, reduced line losses and dependable reactive-power compensation.
SET-CAPD 250V / 280V / 300V low-voltage power capacitors are designed for indoor AC power systems below 1000V. They supply reactive power locally, improve power factor and reduce unnecessary current, cable losses and transformer loading. Designed for detuned compensation panels and systems where the capacitor operating voltage rises because of a series reactor.
The cylindrical aluminium housing combines compact installation with reliable heat dissipation. Metallized polypropylene film provides low dielectric loss and self-healing performance. A built-in discharge resistor and over-pressure disconnector add essential operating protection for capacitor-bank service.
High-reliability metallized polypropylene insulation limits temperature rise and restores small dielectric weak points during normal service.
Over-pressure protection disconnects the element at end of life, while the internal resistor discharges residual voltage after switching off.
Multiple kVAR steps support automatic power-factor correction panels, fixed compensation and custom capacitor-bank combinations.
Rated for indoor operation from −25°C to +50°C and installation altitudes up to 2000m.
| Rated voltage | Available capacity | Model format |
|---|---|---|
| 250V | 5, 10, 15, 20, 25, 30 kVAR | SET-CAPD-250-[kVAR]-3YN |
| 280V | 5, 10, 15, 20, 25, 30 kVAR | SET-CAPD-280-[kVAR]-3YN |
| 300V | 5, 10, 15, 20, 25, 30 kVAR | SET-CAPD-300-[kVAR]-3YN |
| Application | Indoor AC systems below 1000V |
|---|---|
| Rated voltage | 230–1000 VAC, 50Hz |
| Capacity range | 5–50 kVAR across the SET-CAPD family |
| Capacity tolerance | −5% to +5% |
| Dielectric loss | tan δ ≤ 0.0015 |
| Terminal-to-terminal withstand | 2.15 × Un AC for 2 seconds |
| Terminal-to-case withstand | 3000 VAC for 10 seconds |
| Maximum permissible voltage | 110% of rated voltage |
| Maximum permissible current | 130% of rated current |
| Discharge performance | Residual voltage below 75V within 3 minutes |
| Ambient temperature | −25°C to +50°C |
| Installation altitude | ≤ 2000m |
| Standards | GB/T 12747.1-2017 / IEC 60831-1:2014 |
Send us your system voltage, target kVAR, harmonic conditions and reactor ratio. SET engineers will recommend a safe configuration.
Choose the low voltage power capacitor rating from measured reactive load, phase configuration and target power factor. Provide ventilation, upstream protection and discharge time before maintenance. SET support can assist with wiring and protection coordination.
