NES rectifiers – SZK series

Advanced switching power supplies for cathodic protection

The SZK rectifiers are designed for impressed current cathodic protection of metallic structures installed underground or in water, such as water pipelines, gas pipelines, and other piping systems. These units form an essential component of impressed current cathodic protection systems used to prevent corrosion.

The SZK series uses modern switch-mode power supply technology (SMPS) and is characterised by excellent technical performance and energy efficiency.

This technology offers:

• High efficiency, with optimised energy consumption across the full load range
• Very low no-load losses, thanks to the absence of continuous transformer losses
• Low output ripple voltage, resulting in stable and accurate polarisation voltage
• Compact and lightweight design, simplifying installation and system integration

Thanks to these characteristics, the SZK series provides a stable, precisely controllable, and energy-efficient power supply for cathodic protection systems in demanding industrial applications.