Power and Power Factor
It is common to use mechanical kW to indicate the engine power but for alternators there are two ways to indicate the power of generators:
kW (active power) and kVA (apparent power) the ratio of these two is the Power Factor.
kW = kVA x P.F
What does Power Factor mean?
In a DC circuit the power in Watts is a product of Voltage x Current.
In an AC circuit the Active Power is not always the product Voltage x Current.It is related to the Power factor, which depends on the type of load:
Resistive Load (Incandescent lights, heaters)
The voltage and current peaks coincide to enable that the in-phase and the power factor are in unity.
Inductive Load (Motors, transformers)
On an inductive load the current waveform is LAGGING behind the voltage waveform, the voltage peaks and current peaks are not in phase, the amount of phase delay is given by the cosine of the angle (Cos) between the vectors representing voltage and current.
Hire Fleet Cable / Generator Size
| Hire Fleet Cable / Generator Size. | Three Phase | |
|---|---|---|
| 15 kVA | 10mm 3 core | 6mm 5 core |
| 30 kVA | 16mm 3 core | 10mm 5 core |
| 40 kVA | 35mm 3 core | 16mm 5 core |
| 60 kVA | 35mm 5 core | |
| 80 kVA | 35mm 5 core | |
| 100 kVA | 35mm 5 core | |
| 150 kVA | 120mm 5 single cores | |
| 200 kVA | 120mm 5 single cores | |
| 250 kVA | 120mm 5 single cores | |
| 350 kVA | 240 mm 5 single cores | |
| 500 kVA | 240 mm 5 single cores | |
| 800 kVA | 240 mm 10 single cores 2 per phase 2N 2E | |
| 1250 kVA | 240 mm 10 single cores 3 per phase 2N 2E |
| Size MM | Length Metre | Current Rating Three Phase AC | Cable Dimensions Diameter | Cable Dimensions Weight Kg | Lug Hole mm | Dimensions Length | Dimensions Width | Dimensions Height | Dimensions Weight |
|---|---|---|---|---|---|---|---|---|---|
| 6 5 Core | 25 | 47 | 24.5 | 16.5 | 10 | 316 | 316 | 333 | 27.50 |
| 10 5 Core | 25 | 64 | 30.5 | 27.15 | 10 12 |
9000 | 458 | 1190 | 133.15 |
| 10 5 Core | 50 | 64 | 30.5 | 54.30 | 10 12 |
900 | 458 | 1190 | 160.30 |
| 35 5 Core | 25 | 135 | 47.5 | 80.0 | 10 12 |
900 | 458 | 1190 | 186.0 |
| 35 5 Core | 50 | 135 | 47.5 | 160.00 | 10 12 |
900 | 458 | 1190 | 266.00 |
| 95 4 Core | 25 | 262 | 60.5 | 143.75 | 12 12 |
900 | 458 | 1190 | 249.70 |
| 95 4 Core | 50 | 262 | 60.5 | 287.40 | 12 12 |
900 | 805 | 1190 | 413.40 |
| 95 Single Core | 25 | 320 | 19.7 | 25.9 | 12 12 |
900 | 458 | 1190 | 235.00 |
| 95 Single Core | 50 | 320 | 19.7 | 51.4 | 12 12 |
900 | 805 | 1190 | 383.00 |
| 120 Single Core | 25 | 414 | 20.1 | 31.75 | 12 12 |
900 | 458 | 1190 | 264.00 |
| 120 Single Core | 50 | 414 | 20.1 | 63.5 | 12 16 |
900 | 805 | 1190 | 443.00 |
| 240 Single Core | 25 | 645 | 28.3 | 60 | 12 16 |
900 | 805 | 1190 | 486.00 |
| 240 Single Core | 50 | 645 | 28.3 | 120 | 12 16 |
900 | 805 | 1190 | 606.00 |
| 240 Single Core | 100 | 645 | 28.3 | 240 | 12 16 |
900 | 805 | 1190 | 606.00 |
