Get instant kVA recommendations for your UAE construction project. Our calculator accounts for motor starting currents, diversity factors, and high ambient temperature conditions.
Quick reference for typical generator requirements by construction project type in UAE climate conditions
Typical power consumption for common construction equipment used in UAE projects
| Equipment Type | Typical Size | Power (kW) | Starting kVA | Notes for UAE |
|---|---|---|---|---|
| Tower Crane | 6-12 ton | 45-85 | 200-400 | High starting current, frequent starts |
| Concrete Pump | 60-80 m³/hr | 75-120 | 150-250 | Variable load, pump priming |
| Construction Hoist | 1-2 ton capacity | 15-30 | 75-150 | Frequent start/stop cycles |
| Concrete Mixer | 0.5-1.5 m³ | 7-15 | 25-45 | Intermittent operation |
| Compactor | Hand-held | 2-4 | 8-15 | Multiple units typically |
| Welding Machine | 300-400A | 15-25 | 15-25 | Resistive load, power factor 1.0 |
| Site Office HVAC | 100 m² office | 15-25 | 45-75 | Essential in UAE climate |
| General Lighting | Per 100 m² | 3-5 | 3-5 | LED recommended for efficiency |
| Power Tools | Various | 1-3 each | 1-3 each | Diversity factor applies |
| Water Pump | Dewatering | 5-15 | 15-45 | May run continuously |
Professional methodology for accurate generator sizing in UAE conditions
UAE's extreme summer temperatures (45-50°C) significantly impact generator performance. Generators must be derated by 10-15% above 40°C ambient temperature. Our sizing calculations automatically include this derating factor to ensure reliable operation year-round.
Choose the right starting method to minimize generator capacity requirements and improve reliability
| Starting Method | Starting Current | Generator kVA Required | Voltage Dip | Best Applications |
|---|---|---|---|---|
| Direct On Line (DOL) | 5-7x rated | 3-4x motor kW | 15-25% | Small motors (<15kW), simple applications |
| Star-Delta Starting | 1.7-2.3x rated | 1.5-2x motor kW | 8-12% | Medium motors (15-75kW), pumps, fans |
| Soft Starter | 2-4x rated | 1.3-1.8x motor kW | 5-10% | Sensitive applications, frequent starts |
| Variable Speed Drive (VSD) | 1.5x rated | 1.1-1.3x motor kW | 2-5% | Variable loads, energy efficiency required |
Our engineers provide free load calculations and motor starting recommendations for UAE projects
Get Free Technical ConsultationParallel operation provides redundancy, load sharing, and staged capacity for large UAE projects
Distribute load across multiple generators for better fuel efficiency and reduced wear on individual units
Critical applications where power outage is not acceptable. One generator serves as backup for others
Start with smaller capacity and add generators as project load requirements grow over time
Large single generators may have transport restrictions. Multiple smaller units easier to mobilize
Distribute load across multiple generators for better fuel efficiency and reduced wear on individual units
Critical applications where power outage is not acceptable. One generator serves as backup for others
Start with smaller capacity and add generators as project load requirements grow over time
Large single generators may have transport restrictions. Multiple smaller units easier to mobilize