Knowledge

Anyone who has spent a few years on site in Vietnam will agree on one thing: if the surge arresters are selected correctly and properly maintained, th

Distribution boxes operating in the hot and humid climate of Southeast Asia exhibit failure modes distinctly different from those seen in temperate re

Surge arresters may appear inconspicuous and remain completely silent during normal operation, yet they play a critical protective role in power syste

We receive frequent inquiries about matching selection of three core 10kV pole-mounted devices: GW9 series disconnector, YY-10 drop-out fuse and HY5WS

Last year I helped a factory replace a transformer. The guy in charge said confidently, "Our load isn't big, 200kVA is enough." Two mont

A substation operator in Inner Mongolia sent a message last month. They had a 110kV high-voltage disconnect switch that wouldn't close all the way

Anyone who works on distribution lines knows that dropout fuses look simple but cause plenty of trouble. The most common headaches are: the fuse tube

A utility guy in the Philippines called last month. A 24kV drop-out fuse on a rural feeder had blown, and the crew couldn't get a replacement tube

We got a call from a substation guy in Saudi last week. 132kV disconnect switch, wouldn't budge. Handle moved halfway and just locked up. They had

A substation operator in Saudi Arabia called last week. They had a 132kV disconnect switch that wouldn't budge. The handle moved about halfway, th

Last year at a solar farm in Oman, a maintenance manager showed me photos of two drop-out fuse tubes that had burned black. The top end caps were defo

Many countries face a common challenge: how to upgrade aging substations at low cost. Legacy equipment from ABB, Siemens, and Cooper-including pole-mo