MORE than a supplier

HV Power has a solid reputation for providing comprehensive technical and practical hands-on support to our customers amongst the NZ power utility companies, their engineering consultants and contractors. We specialise in:

• Protection relays
• Transformer voltage regulators and temperature controls
• Power quality measurement and revenue metering
• Substation automation through IEC 61850
• Time synchronisation
• Hardened Ethernet products
• Voltage detectors and safety equipment
• Surge and lightning protection products

We represent the world's leading companies and brands in our field, including Siemens, SIPROTEC, REYROLLE, A. Eberle, Tekron International, Electro Industries/Gaugetech, GarrettCom®, DEHN, RMS and Nortech.

The HV Power team has many years of industry experience and technical knowledge on the application of the various technologies we supply. We provide accessible, local support - on site or by phone. That's the difference!

Download our shortform catalogue and browse our website - if they don't answer your needs, then please contact us. We know we can help.

Download the HV Power shortform catalogue. (PDF, 1.5MB)

REG-D/DA Voltage Regulation

For the voltage regulation of three winding transformers, a special feature is available on REG-D and REG-DA devices. This “three winding” function enables voltage regulation on the selected winding and “supervises” the other.

Find out more...