HV Power collage

Featured Suppliers & Brands:




A. Eberle

Tekron International

MV Technology


EGE logo


Electro Industries

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 represent the world's leading companies and brands in our field, including:



The REG-D/DA developed by A.Eberle GmbH of Germany are the most widely used tap changer controllers in New Zealand. Local lines companies implement these “one box” solutions for automatic voltage regulation and temperature control of their substation transformers.

LVRSys is used to correct voltage issues on 230/400 V distribution systems, which are becoming more prevalent in the distribution system due to the rapid uptake of imbedded solar generation and large peak loads such as fast electrical vehicle charging.

The A.Eberle REG-DP controller for classic Petersen Coils is one of the key components in HV Power’s RE+DS system. Control of the coil allows it to act as a Rapid Earth Fault Current Limiter (REFCL), while A.Eberle’s EOR-D & EOR-3D provide highly effective earth fault detection and location capabilities.

A.Eberle also have a range of power quality analysers for portable field use and models for permanent monitoring. This technology solves a number of issues that have frustrated users of test instrument style analysers for years.

Product info - Power Quality          A.Eberle website Technical Library - Power Quality        
Product info - Resonant Earthing Technical Library - Resonant Earthing
Product info - Transformer Controls Technical Library - Voltage Regulators
Product info - LV Regulators



EGE, headquartered in Ceske Budejovice in the Czech Republic, is a company specialising in the manufacture of equipment for the power engineering industry. EGE has over 60 years experience in the manufacture of Petersen coils and are a market leader in Europe. In addition they have extensive experience in the manufacture of earthing resistors and earthing transformers.

All their production facilities are ISO 9001 and ISO 14001 accredited. Customers of EGE include ABB, AREVA, ENEL, E-ON, Siemens and Voith.

HV Power offer the EGE Petersen coil together with A.Eberle controllers as a complete turnkey solution for use on 11kV and 33kV networks - our RE+DS System.

Product info - Resonant Earthing EGE website Technical Library - Resonant Earthing


Electro Industries

Electro Industries/GaugeTech (EIG) specialises in power meters, power measurement & energy meters. With over 30 years of industrial and utility power metering experience, EIG expertise ensures that their power metering equipment is well designed and cost effective. With products featuring DNP protocols and Power Quality Analysis, they are popularly used within the electrical and utility industries.

Product info - Power Quality & Metering Electro Industries website


MV Technology

Following an agreement signed with Horstmann’s Australasian master distributor MV Technologies, Horstmann Fault Passage Indicators are now available in New Zealand from HV Power. MV Technology understand that their products are best represented by locals who have the technical capabilities to understand the product and the applications. With HV Power’s expanding range of MV products, the Fault Passage Indicators are a perfect fit.

MV Technology Solutions, an Australian Proprietary Company was founded in April 2003. It is a leading supplier of a diverse range of products for the power distribution, transmission, rail, and mining sectors and industries throughout Australia and New Zealand.

Horstmann is a family-run German company, headquartered in Heiligenhaus (near Dusseldorf). They are a market leader for Fault Passage Indicators, having been in business for over 60 years. Horstmann products are in use throughout the world. Horstmann's traditional and innovative solutions are focused on the needs of electrical transmission and distribution industries, but with many products being incorporated into industrial switchgear.

Product info - Fault Passage Indicators MV Technology website Horstmann website


MTE (Meter Test Equipment)

Based in Switzerland, MTE (Meter Test Equipment) is perhaps best known for their range of highly dependable and highly accurate range of electricity revenue meter test equipment. In New Zealand and Australia, HV Power offer MTE’s range of HYDROCAL products: maintenance-free online DGA and moisture-in-oil detection solutions.

Product info - Transformer Condition Monitoring MTE website


RMS Mors Smitt

RMS Mors Smitt (was Relay Monitoring Systems) design and manufactures in Australia a range of high quality protective relays and accessories including:

With over 45 years of experience, RMS Mors Smitt offer a broad base of field-proven product standard products with rapid delivery.

Product info - Protection Relays    RMS website
Product info - Voltage Regulators



Siemens is one of the world’s leading suppliers of protection equipment for power systems.

In New Zealand, protection and control IED products from Siemens Energy Automation division are distributed by HV Power. These products not only include the SIPROTEC brand of numerical protection relays, but also the REYROLLE brand of relays and test blocks.

Around the world, almost one million SIPROTEC relays ensure first-class performance in generation and on transmission and distribution networks at all voltage levels.

For many years, Siemens has led the development of protection technology. In 1985, they were the first to manufacture a range of fully numerical relays with standardised communication interfaces – and more recently were the first to implement the IEC 61850 standard.

The SIPROTEC range of devices offers a solution for practically all protective relay applications. Their success is the result of a relationship between an innovative expert of protection relaying, and the market leader in easy to use automation - Siemens. Integration is not an issue with SIPROTEC devices, as they have proven in the field to be very flexible.

REYROLLE is a brand of Siemens protection relays (Siemens Protection Devices - SPD). Manufactured in the UK, the REYROLLE brand of numeric and auxiliary protection relays offers simple and versatile functionality. The range has support for DNP3, IEC 60870-5-103 and MODBUS RTU.

In 2019 HV Power also started offering RUGGEDCOM products into New Zealand. RUGGEDCOM a well known manufacturer of network switches and devices, is now a Siemens brand.

HV Power also distribute Siemens range of MV Switchgear including Ring Main Units, Reclosers, Circuit Breakers and other transmission/distribution equipment.

Cross Reference of REYROLLE to Siemens Model Numbers

Product info - Power Quality                 Siemens website     Technical Library - Protection Relays
Product info - Protection Relays        
Product info - Substation Automation
Product info - MV Switchgear             
Product info - RUGGEDCOM Ethernet equipment             


Tekron International

Tekron International develop GPS clocks and time sync devices for use in industry - mainly the power industry - where time is needed to be measured in micro and nanoseconds.

Their GPS clocks are extremely accurate, simple to use and very tough; requirements in the often extreme environments in which they are installed. To date, the GPS clocks and time sync products have been installed in thousands of power stations & substations in over 60 countries, helping power companies to function efficiently, minimizing downtime and increasing the accuracy of control decisions.

Designing and making GPS clocks is all they do, and they are very good at it.

Tekron International are headquartered in Wellington, New Zealand, where they develop and manufacture their products. HV Power is proud to represent this local NZ manufacturer. Tekron pride themselves on the quality of our products and service. You will find the GPS clocks contain functions that are not available on many competitors’ clocks, and should you require any technical assistance, you will get great service from HV Power!

Product info - Time Synchronisation Tekron website Technical Library - Time Synchronisation