| Drive measurement details |
| Motor Type |
3 phase asynchronous (induction) |
| Power Source |
Variable Frequency Drive |
| Motor Frequency Range |
40Hz to 70Hz |
| Over/Under Voltage from Nominal V/f Curve (%) |
-15% to +15% |
| Carrier Frequency Range |
2.5kHz–20kHz |
| Variable speed drive technology that is covered by the 438-II |
| Inverter Type |
VSI only (voltage controlled) |
| Control Method |
V/f control, open-loop vector, closed loop vector, drives with encoders |
| Frequency |
40 to 70 Hz |
| Variable speed drive technology NOT covered by the 438-II |
| Inverter Type |
CSI (current source inverter) |
| Motors Type |
Synchronous (DC, stepper, permanent magnet etc.) |
| Motor Frequency |
<40 and >70 Hz |
| Mechanical specifications |
| Mechanical measurements can be performed on direct online motors with a 3 wire connection. |