
Voltage regulators are not pieces of equipment that most networks have a lot of, nor are they replaced very often. When a network needs a new regulator or is replacing an old or non-performing regulator, sourcing can be a bit of a head scratcher – especially in these Covid times, with some manufacturers advising lead-times of 12 months or more.
US-based Howard Industries SVR-1 single-phase step voltage regulators are tap changing autotransformers designed to automatically regulate distribution line voltages in a range of plus or minus 10 per cent in 32 steps. One of the most popular and reliable voltage regulators in the US, they have been getting quite a lot of attention recently in New Zealand and Australia. Quality and reliability are the attributes most talked about – expressed as lower failure rates and consequently lower maintenance and operating costs. For example, the options of a painted stainless tank increases the life of the unit significantly over the mild steel unit, especially in coastal locations.