Sudden lightning or power fluctuation destroy the flow of power in the system. The immediate disruption causes unwanted damage to the machinery or appliances of the electrical system. Lightning can induce surges up to several hundred volts. Therefore, even if the device is not hit directly by the surge, the functionality is majorly affected.
There is a need to introduce power management system that will make the interconnected machinery secure and make it last longer. To avoid damages due to electric surges, surge protectors are installed to counter high voltages. It works when the current in the circuit is fluctuating, generally higher than the expected value. The protector provides a low-impedance path to ground for the current from a lightning strike or transient voltage and then restores to normal operating conditions. It ensures that only safe or permitted amount of electricity passes through the device.
To save the system from different magnitudes of surge voltages, the capacity or magnitude of the arrestor varies. The amplitude can range from a few millivolts to some ten thousand volts.
Comprehensive testing is required to save many connected systems or people in critical situations. Power factor testing depends majorly on weather conditions. The tests are conducted in favourable conditions to have a controlled environment. Measurements on surge arresters are always performed at the same or recommended test voltage since nonlinear elements may be built into an arrester. Lightning protective devices are developed, tested, and classified according to their international series of product standards, and they have defined surge protection functions and performance parameters to make them suitable for use with similar protection concepts.
Schneider Electric India comes with a series of surge protection devices that can be installed in the system to ensure protection from over or under voltage. To use this, install a plug-in, point-of-use electrical surge protector. The device can be plugged into a grounded electrical outlet or can be directly connected into the appliance.