शॉर्ट सर्किट करंट कैलकुलेटर — सूत्र
## Power Factor Correction
Low power factor means the utility must deliver more current (and apparent power) than the load actually uses. Capacitor banks supply reactive power locally.
### Formula
**kVAR needed = kW x (tan(arccos(PF_current)) - tan(arccos(PF_target)))**
### Benefits
- Reduced utility power factor penalties
- Lower line current (smaller cables, less loss)
- Freed transformer and distribution capacity
Most utilities penalize power factors below 0.90. Correcting to 0.95 is a common economic target.
Low power factor means the utility must deliver more current (and apparent power) than the load actually uses. Capacitor banks supply reactive power locally.
### Formula
**kVAR needed = kW x (tan(arccos(PF_current)) - tan(arccos(PF_target)))**
### Benefits
- Reduced utility power factor penalties
- Lower line current (smaller cables, less loss)
- Freed transformer and distribution capacity
Most utilities penalize power factors below 0.90. Correcting to 0.95 is a common economic target.
हल किया गया उदाहरण
100 kW load at PF 0.75, correcting to PF 0.95.
- Current angle: arccos(0.75) = 41.41 degrees, tan = 0.8819
- Target angle: arccos(0.95) = 18.19 degrees, tan = 0.3287
- kVAR needed: 100 x (0.8819 - 0.3287) = 55.3 kVAR
- kVA reduction: 100/0.75 - 100/0.95 = 133.3 - 105.3 = 28.1 kVA