The nameplate of an Ingersoll-Rand 3-M Type 112 M4 motor shows the following specifications: Nr. 28499, 55 kW, 400 V, 84 A (50Hz), 50 Hz, IP 55, Cos φ 0.84, 1428 min-1. Calculate the power factor and the full load current in Amperes.

Here are the key specifications from the motor nameplate:

• Manufacturer: INGERSOLL-RAND
• Type: 3-M TYPE 112 M4
• Rated Power: 55 kW
• Rated Voltage: 400 V (Delta connection) / 690 V (Star connection)
• Rated Current: 81 A (at 400 V) / 47 A (at 690 V)
• Frequency: 50 Hz
• Power Factor ($\cos \phi$): 0.84
• Rated Speed: 1428 min⁻¹ (RPM)
• IP Protection Class: IP 55
• Insulation Class: F