Three Phase High Voltage Capacitors
Lifasa’s cos ϕ correction power capacitors and harmonic filtering for AT are manufactured under the stainless steel container/box base and porcelain terminals.
Three-phase (3 terminals) with internal fuses for direct connection to three-phase mains. Recommended for voltage networks below 11 kV.
| Fabrication Voltages (Un) | 1 – 12 kV |
| Powers: | 25 – 500 kvar unit in Threephasic |
| Frequency: | 50/60 Hz |
| Compliance standards: | CEI 60871-1:1997 EN 60871-1:1997 CEI 60871-4:1997 EN 60871-4:1997 |
| Max overvoltage: | Un +10% (12 hours of 24 h daily) Un +15% (30 minutes) Un +20% (5 minutes) Un +30% (1 minute) |
| Overcurrent (according to standard): | 1,3 * In |
| Tolerance: | -5 / + 10% |
| Test Voltage (between terminals): | 4,3 * One DC 10s, o 2,15 * One AC 10 s |
| Test Voltage (between terminal and tank): | Conforms to the IEC standard for 10s |
| Current limitation: | Max. 100 xln |
| Dielectric Losses: | 0,07 W / kvar |
| Total Losses Capacitors: | 0,15 W / kvar (with discharge resistors and internal fuses) |
| Insulation Level: | 20/60 kV; 38/75 kV; 38/95 kV; 50/125 kV; 70/170 kV |
| Expected standard of living: | > 100.000 hours |
| IP degree of protection: | IP 00, interior and exterior |
| Working temperature category: | -25º/C (50ºC) |
| Ventilation: | Natural |
| Humidity: | Maximum 95% |
| Max. working height: | 1.000 m above sea level |
| Mounting position: | Horizontal / Vertical |
| Fastening: | Side Cards |
| Internal safety device: | Internal fuses |
| External safety device: | (optional) Pressure switch with potential-free contact NA+NC |
| Cuba: | Stainless Steel |
| Dielectric: | Polypropylene film |
| Impregnant: | PCB-free, biodegradable |
| Terminals: | Porcelain |
| Discharge Resistors: | Included – 75 V residual voltage in 10 min. |
| Recommended tightening M12: | 10 Nm |
| Recommended tightening M10: | 7 Nm (Ground) |