Modbus based OLTC Motor Condition Monitoring
HALL sensor based 3 phase OLTC Motor monitoring device with IP65 enclosure for measurement of RMS current of OLTC motors in Power Transformers for condition monitoring Connect to PLC’s, RTU & Gateways through Modbus RS485.
- Average RMS current per Tap Change
- Max Current per Tap Change
- Number of Tap Change
- Time for Tap change in secs
Above parameters available through Modbus indicating impending Mechanical jam ( Max Current & Time to Tap Change ), Preventive Maintenance based on number of Tap change.