Protection function
The MOVITRAC® LTP-B frequency inverter offers the following protection functions:
- Output short circuit, phase-phase, phase-ground
- Output overcurrent
- Overload protection
- Inverter responds to overload as described in chapter Overload capacity.
- Overvoltage fault
- Set to 123% of the maximum nominal line voltage of the inverter.
- Undervoltage fault
- Overtemperature fault
- Undertemperature fault
- The inverter is switched off at a temperature below the specified ambient temperature (Ambient conditions).
- Line phase failure
- An enabled inverter switches off with delay depending on the load.
- Thermal motor overload protection according to NEC (National Electrical Code, US)
- Evaluation of TF, TH, KTY84, and PT1000
- Motor phase failure identification in all vector operating modes
