Posts tagged as protection

Current-limiting MV fuses for indoor distribution networks

In today’s world of advanced electronically controlled protection devices, the use of fusegear in networks may seem archaic and out of place, but there is still a range of applications for this simple protection device, and fuses are used extensively in variety of applications in medium and high voltage industrial and distribution networks. Advanced  features […]

Lightning protection provided for large poultry farm’s solar installation

Lightning and surge protection specialist Dehn Africa was recently involved in an extensive project to provide and protect rooftop solar power to one of South Africa’s largest poultry farms, Chubby Chick, in Potchefstroom. All parties involved worked closely together from design to commissioning, ensuring the installation was comprehensively protected from lightning effects during its lifetime. […]

Commissioning and testing of differential protection for phase-shifting transformers

Due to the increasing demand to control power flow within our networks, more phase-shifting transformers (quadrature boosters) are being installed. The most important protection principle for transformers is differential protection. An additional phase-shift has to be considered by the differential protection to fulfill the requirements for selectivity. With two-phase faults outside of the transformer, an […]