Step 1: | Enter MEASURED values for supply voltage and load current below. |
Step 2: | Enter MEASURED values for Power Factor (cos  ) |
 | Actual measured Power Factor will provide best accuracy as it significantly impacts ride through time. |
| If Power Factor is unknown estimate based on the load. For example: |
| | Contactors and relays only - cos  = 0.20 |  
|
| | Mixed loads estimate or use - cos = 0.75 |
| | Power supplies, resistors, lamps - cos = 1.00 |
Step 3: | Enter desired Ride Through Time |
| 
| (95% of events are less than 1 second) |
Step 4: | See below for recommended DPI and click Request Info |