Based on a cycle rate of between 24 and 30 shots per hour at the die-casting machine, it is estimated that the hourly requirements for liquid copper will range between less than 140 kg/hr for the smaller rotors to nearly 1,300 kg/hour for the large rotors. More detailed estimates are shown in the Table below.
| Motor Size Range | Liquid Copper Requirements (kg per hour) | |
|---|---|---|
| KW | HP | |
| Less than 1 | Less than 1.3 | Up to 140 |
| 1-5 | 1.3 to 6.5 | 90 to 225 |
| 5-20 | 6.6 to 26 | 140 to 550 |
| 20-50 | 26 to 66 | 440 to 1,300 |