High-Temperature Effects on Solar PV Performance and Service Life
High temperatures affect far more than the instantaneous output of…
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Built-in PLC Logic in VFDs
Built-in PLC Logic in VFDs allows selected drives to execute…
Why Does a Motor Draw High Current at Low Speed?
Reducing motor speed does not always reduce motor current. A…
Motor and Cable Insulation Resistance Testing
A practical guide to testing motor and cable insulation resistance…
Static or Rotating Auto-Tuning?
A Practical Guide to Accurate VFD Motor Identification Correct motor…
How to Select a VFD for Normal Duty and Heavy Duty Applications
Selecting a VFD based only on motor power in kilowatts…
VFD Derating Due to Temperature, Altitude, and Switching Frequency
The rated power shown on a Variable Frequency Drive does…
Practical Short-Circuit Current Calculation
A Practical Guide for Calculations at Transformer Terminals and Feeder…