About us

We provide best in class specialist service for High Voltage Power Industries

Established since 1991, HVSM is a wholly Irish owned company which is headquartered in Ireland but is present and operating globally. We provide best in class specialist service for High Voltage Power Industries such as commercial, utilities, manufacturing, Life Science, data centres as well as the renewable energy sector.

At HVSM, we pride ourselves in our longevity in the market. Our expertise and in-depth knowledge of High Voltage power systems, coupled with our long term, entrusted partnerships with global leading manufacturers, helps us to serve all aspects of the High voltage power sector. Our ethos is to consistently deliver excellence through service, expertise and tailored solutions ensuring that we not only meet but exceed customer expectations, every time.

Meet our Leaders

Steering our organisation towards innovation and excellence.

Mark O’Sullivan

Director

David Bowes

Director

Patrick Rathborne

Director

James Dingle

Director

Expertise

With specialised expertise in the High Voltage Power Industries, our team delivers tailored solutions to propel your business forward. From power system design to advanced technology implementation, trust us to provide the expertise you need to excel in this dynamic sector.

Switchgear

Air Insulated Switchgear (AIS)
Gas Insulated Switchgear (GIS)
Hybrid Switchgear
Metal Clad Switchgear
Bulk Oil Switchgear

Transformers

Distribution Transformers (Oil Filled & Dry Type)
Power Transformers
Auto Transformers
Isolation Transformers
Earthing Transformers
Reactors

Protection Systems

Directional Protection (Overcurrent, Earth Fault)
Zone Protection (Transformer, Generator/Motor, Busbar, Cable Differential, RestrictedEarth Fault)
Impedance Protection (Distance Protection for Overhead Line, Cable & Loss of Excitation)
Synchronizing
Embedded Generation Interface Protection (G10, G59, EGIP)

HV Cable Systems

Teck Cables
Shielded Cables
Concentric Neutral Cables
Paper-Insulated Lead-sheath Cables
Submarine Cables
Mining Cables
Aluminium-Sheath Cables

And much more

Rotating Machines
Power Factor & Harmonic Filtering
Substation Earthing
AC & DC Distribution Systems
Substation Communication Protocols

Our Global Partners

Collaborating with global industry leaders, we ensure quality and innovation in our solutions. Experience the power of our partnerships, driving growth and sustainable progress in power delivery.