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Lightning and surge protection systems reduce or eliminate harmful transients, surges and electrical line noise, thus preventing damage to sensitive electrical equipment. Each year millions of dollars worth of hardware will be spared by installing surge protectors.

The necessity of providing lightning protection for multiple surge-coupling modes has long been understood. Lightning typically couples between line and ground (common mode); however, significant normal mode (L-N, L-L) transients can also be generated. In either case, transients will follow the path of least resistance along a typical three-phase distribution system. Unequal distribution of electrical surge activity on any mode (or combination of modes) results in an unequal distribution of surge current.

Effective transient voltage surge suppression requires that impulse energy be dissipated by the surge suppression system at a voltage low enough to ensure survival of the protected circuit components. A practical solution to protect against disturbances such as electrical noise, spikes and voltage transients is to install a hybrid surge suppression system which addresses very fast, high energy transients and has integrated electrical noise filtration.
For the very reasons noted above, THOR SYSTEMS developed the StakTraks™ suppression system design comprising multiple, independent parallel surge paths, surge planes and buss works which are key elements in providing improved transient voltage surge suppression performance.

This improved performance is accomplished by offering a lower impedance path between the hybrid design suppression elements and their conduction paths to direct the transient away from the protected equipment.

Electrical power quality problems cost the United States industries over $100 billion annually
80% of voltage surges and transients are caused by changes in electrical demand, inside the user's facility