Today's electronic environment demands a total system. The main power problems we face in today's typical power environment are blackouts, brownouts, and electrical pollution .
Electrical pollution is the most costly to ignore and the least costly to eliminate.
Businesses are mostly plagued with both catastrophic failures and gradual component deterioration due to electrical pollution. The emergence of computer networks and telcom systems require more sophisticated protection of both powerlines and datalines. Harmonic currents cause extra heating, potentially overloading electrical system components such as transformers, capacitors, motors, and conductors. They also flow through the system impedance and cause the voltage to become distorted. Voltage distortion can be expected to be high when either harmonic current or system impedance is high.