Protection of Pump and Motor Systems Against Overvoltage and Lightning

Primarily, pump systems that direct the flow of water are designed in accordance with sustainable operation principles. However, as a result of sudden overvoltage and lightning strikes, pumps may be completely disabled, continuous flows interrupted, and flow rates may vary. This is because the motor components are affected by sudden overvoltage surges. In pump systems exposed to lightning strikes, the number of systems that are directly disabled is quite high. Studies have shown that 70% of motor failures in pumps are caused by sudden changes in voltage levels. Against such a significant rate, not using AG Surge Arresters in motor panels poses a major technical problem.

Studies have shown that 70% of motor failures in pumps are caused by sudden changes in voltage levels.

AG Surge Arrester systems are responsible for damping surges directed toward the pump system in the nanosecond range, reaching up to 20 times the nominal current. When a lightning strike occurs, it prevents the surge from being transmitted to the system, thereby avoiding physical deformation and subsequent electrical failures. Even if the lightning strike occurs far away, pump systems located on the ground floor and utilizing building grounding may be directly exposed. Therefore, pump panels should be protected with Type 1+2 AG Surge Arrester systems selected according to continuous voltage level, phase number, and system characteristics. If Type 1+2 protection products are installed in the main building panel, VG technology Type 2 AG Surge Arresters can be used in motor panels. At this point, the continuous monitoring of the system is extremely important.

Submersible pumps, centrifugal pumps, hydrophores, or pumps in large industrial facilities are at risk as long as they are supplied with energy, regardless of type.

Submersible pumps, centrifugal pumps, hydrophores, or pumps in large industrial facilities are at risk as long as they are supplied with energy, regardless of type. In mechanical-based systems, AG Surge Arrester systems are often not considered. However, facilities and manufacturers that want to prevent risks and protect pump systems must use AG Surge Arresters. Fluctuations in current indicators are a warning of potential electrical damage. Therefore, we recommend using AG Surge Arrester products in pump systems to protect against sudden overvoltage and lightning strikes.

Lightning Protection Center has developed Pump Protection and Motor Protection Systems with our French partner, performing preliminary assessments at many facilities to implement the correct protection measures. To protect your systems and get information on this topic, you can reach our expert engineers at info@yilkomer.com.