Alltec Articles




  • Alltec Protection Pyramid
  • Alltec’s approach to comprehesive lightning protection.

  • Minimizing Materials & Costs with Exothermic Welding
  • Read how the exothermic welding connections can save materials and cost.

  • Protecting Variable Frequency Drives
  • Surge Protection Devices (SPDs) are essential in today’s quest for total power quality. Properly installed SPDs reduce the magnitude of random, high energy, short duration electrical power anomalies. There are generally five opportunities for protecting a typical drive system: drive input, inverter input, control circuit, drive output, and motor output. The following article explains how properly staged and installed Surge Protection Devices aid in the protection of drives and will mitigate the damage that can occur due to voltage surges while still taking into consideration the importance of harmonics.


  • The Lightning Phenomenon
  • Lightning, an awesome and terrifying natural phenomenon, is really nothing more than an electrical discharge that happens to be at an enormous voltage. Lightning equalizes a difference of electrical potential, whether it is between a cloud and the ground, between two clouds, or between two different areas of the same cloud. Due to various mechanisms in storm cloud formation, such as the rising and falling of air currents carrying moisture and ice particles, the storm cloud generates an electrical charge at its base. Charged regions in a thundercloud create conductive ionization channels through the atmosphere called "stepped leaders," while an opposite electrical charge or "shadow" accumulates on the ground below.

  • Protection Methods for Lightning Strikes
  • An overview of the technologies used to protect against lightning strikes.

  • Alltec Protection Pyramid
  • Alltec’s approach to comprehesive lightning protection.